Patchwork [v2,5/6] ARM: mxs: add usb phy operations

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Submitter Tony Lin
Date July 25, 2011, 7:01 a.m.
Message ID <1311577284-11506-6-git-send-email-tony.lin@freescale.com>
Download mbox | patch
Permalink /patch/106614/
State New
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Comments

Tony Lin - July 25, 2011, 7:01 a.m.
add usb phy register definitions and functions
usb host driver will use these callback functions
to initialize usb phy and change working mode

Signed-off-by: Tony Lin <tony.lin@freescale.com>
---
 arch/arm/mach-mxs/Kconfig            |    1 +
 arch/arm/mach-mxs/Makefile           |    1 +
 arch/arm/mach-mxs/mxs_usb.c          |  286 ++++++++++++++++++++++++++++++++++
 arch/arm/mach-mxs/regs-usbphy-mx28.h |  240 ++++++++++++++++++++++++++++
 4 files changed, 528 insertions(+), 0 deletions(-)
Lothar Waßmann - July 25, 2011, 7:15 a.m.
Hi,

Tony Lin writes:
> add usb phy register definitions and functions
> usb host driver will use these callback functions
> to initialize usb phy and change working mode
> 
> Signed-off-by: Tony Lin <tony.lin@freescale.com>
> ---
>  arch/arm/mach-mxs/Kconfig            |    1 +
>  arch/arm/mach-mxs/Makefile           |    1 +
>  arch/arm/mach-mxs/mxs_usb.c          |  286 ++++++++++++++++++++++++++++++++++
>  arch/arm/mach-mxs/regs-usbphy-mx28.h |  240 ++++++++++++++++++++++++++++
>  4 files changed, 528 insertions(+), 0 deletions(-)
> 
> diff --git a/arch/arm/mach-mxs/Kconfig b/arch/arm/mach-mxs/Kconfig
> index 4cd0231..1c4264f 100644
> --- a/arch/arm/mach-mxs/Kconfig
> +++ b/arch/arm/mach-mxs/Kconfig
> @@ -49,6 +49,7 @@ config MACH_MX28EVK
>  	select MXS_HAVE_PLATFORM_MXS_MMC
>  	select MXS_HAVE_PLATFORM_MXSFB
>  	select MXS_OCOTP
> +	select USB_ARCH_HAS_EHCI
>  	help
>  	  Include support for MX28EVK platform. This includes specific
>  	  configurations for the board and its peripherals.
> diff --git a/arch/arm/mach-mxs/Makefile b/arch/arm/mach-mxs/Makefile
> index 6c38262..726c49f 100644
> --- a/arch/arm/mach-mxs/Makefile
> +++ b/arch/arm/mach-mxs/Makefile
> @@ -12,5 +12,6 @@ obj-$(CONFIG_MACH_MX23EVK) += mach-mx23evk.o
>  obj-$(CONFIG_MACH_MX28EVK) += mach-mx28evk.o
>  obj-$(CONFIG_MODULE_TX28) += module-tx28.o
>  obj-$(CONFIG_MACH_TX28)    += mach-tx28.o
> +obj-$(CONFIG_USB_EHCI_MXC)   += mxs_usb.o
>  
>  obj-y += devices/
> diff --git a/arch/arm/mach-mxs/mxs_usb.c b/arch/arm/mach-mxs/mxs_usb.c
> new file mode 100644
> index 0000000..01753ea
> --- /dev/null
> +++ b/arch/arm/mach-mxs/mxs_usb.c
> @@ -0,0 +1,286 @@
> +/*
> + * Copyright (C) 2009-2011 Freescale Semiconductor, Inc. All Rights Reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License along
> + * with this program; if not, write to the Free Software Foundation, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/types.h>
> +#include <linux/clk.h>
> +#include <linux/delay.h>
> +#include <linux/platform_device.h>
> +#include <linux/io.h>
> +#include <linux/err.h>
> +#include <linux/fsl_devices.h>
> +#include <linux/gpio.h>
> +#include <asm/mach-types.h>
> +#include <asm/mach/arch.h>
> +#include <mach/irqs.h>
> +#include <mach/mx28.h>
> +#include "regs-usbphy-mx28.h"
> +
> +/* EHCI registers: */
> +#define UOG_USBCMD		(0x140) /* USB command register */
> +#define UOG_USBSTS		(0x144) /* USB status register */
> +#define UOG_PORTSC1		(0x184) /* port status and control */
> +/* x_PORTSCx */
> +#define PORTSC_PTS_MASK		(3 << 30) /* parallel xcvr mask */
> +#define PORTSC_PTS_UTMI		(0 << 30) /* UTMI/UTMI+ */
> +#define PORTSC_PTW		(1 << 28) /* UTMI width */
> +/* USBCMD */
> +#define UCMD_RUN_STOP           (1 << 0) /* controller run/stop */
> +#define UCMD_RESET		(1 << 1) /* controller reset */
> +
> +#define HOSTPHY_CONNECT_STATE	(1 << 3)
> +#define STS_PCD			(1 << 2) /* port change detect */
> +
> +struct mxs_usb_private_date {
> +	struct clk *usb_clk, *usb_phy_clk;
> +	int internal_phy_clk_already_on;
> +	void __iomem *phy_regs;		/* usb phy register base */
> +	void __iomem *ctrl_regs;	/* usb controller register base */
> +};
> +
> +static inline int fsl_platform_get_usb_connect_status
> +			(struct mxs_usb_private_date *ppriv)
> +{
> +	u32 status;
> +
> +	status = __raw_readl(ppriv->phy_regs + HW_USBPHY_STATUS);
> +
> +	return ((status & HOSTPHY_CONNECT_STATE) == 0);
> +}
> +
> +/* enable/disable high-speed disconnect detector of phy ctrl */
> +static inline void fsl_platform_disconnect_detect
> +			(struct mxs_usb_private_date *ppriv, int enable)
> +{
> +	if (enable) {
> +		__raw_writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
> +		ppriv->phy_regs + HW_USBPHY_CTRL_SET);
> +	} else {
> +		__raw_writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
> +		ppriv->phy_regs + HW_USBPHY_CTRL_CLR);
> +	}
> +}
> +
> +static void fsl_plt_usbh_irq_handler(struct mxc_usbh_platform_data *pdata)
> +{
> +	u32			status;
> +	struct mxs_usb_private_date *ppriv = pdata->ppriv;
> +
> +	status = __raw_readl(ppriv->ctrl_regs + UOG_USBSTS);
> +
> +	if (status & STS_PCD)
> +		fsl_platform_disconnect_detect(ppriv,
> +			fsl_platform_get_usb_connect_status(ppriv));
> +}
> +
> +static int usb_phy_enable(struct mxc_usbh_platform_data *pdata)
> +{
> +	u32 tmp;
> +	u32 i = 0;
> +	struct mxs_usb_private_date *ppriv = pdata->ppriv;
> +	void __iomem *usbcmd, *phy_ctrl, *portsc;
> +
> +	/* Reset USB IP */
> +	/* Set run stop bit */
> +	/* Send reset command */
> +	usbcmd = ppriv->ctrl_regs + UOG_USBCMD;
> +	tmp = __raw_readl(usbcmd); /* usb command */
> +	tmp &= ~UCMD_RUN_STOP;
> +	__raw_writel(tmp, usbcmd);
> +	while (__raw_readl(usbcmd) & UCMD_RUN_STOP) {
> +		i++;
> +		if (i == 1000)
> +			break;
> +		mdelay(1);
> +	}
> +	tmp |= UCMD_RESET;
> +	__raw_writel(tmp, usbcmd);
> +	i = 0;
> +	while (__raw_readl(usbcmd) & UCMD_RESET) {
> +		i++;
> +		if (i == 1000)
> +			break;
> +		mdelay(1);
> +	}
> +	mdelay(10);
> +
> +	/* Reset USBPHY module, set soft reset bit */
> +	phy_ctrl = ppriv->phy_regs + HW_USBPHY_CTRL;
> +	tmp = __raw_readl(phy_ctrl);
> +	tmp |= BM_USBPHY_CTRL_SFTRST;
> +	__raw_writel(tmp, phy_ctrl);
> +	udelay(10);
> +
> +	/* clear CLKGATE and SFTRST bits to be out of reset mode*/
> +	tmp = __raw_readl(phy_ctrl);
> +	tmp &= ~(BM_USBPHY_CTRL_CLKGATE | BM_USBPHY_CTRL_SFTRST);
> +	__raw_writel(tmp, phy_ctrl);
> +	udelay(10);
> +
> +	/* set UTMI xcvr */
> +	/* Workaround an IC issue for ehci driver:
> +	 * when turn off root hub port power, EHCI set
> +	 * PORTSC reserved bits to be 0, but PTW with 0
> +	 * means 8 bits tranceiver width, here change
> +	 * it back to be 16 bits and do PHY diable and
> +	 * then enable.
> +	 */
> +	portsc = ppriv->ctrl_regs + UOG_PORTSC1;
> +	tmp = __raw_readl(portsc);
> +	tmp &=  ~PORTSC_PTS_MASK;
> +	tmp |= (PORTSC_PTS_UTMI | PORTSC_PTW);
> +	__raw_writel(tmp, portsc);
> +
> +	/* Power up the PHY */
> +	__raw_writel(0, ppriv->phy_regs + HW_USBPHY_PWD);
> +	return 0;
> +}
> +
> +static int fsl_usbh_init(struct platform_device *pdev)
> +{
> +	struct mxc_usbh_platform_data *pdata = pdev->dev.platform_data;
> +	struct mxs_usb_private_date *ppriv = pdata->ppriv;
> +	u32 tmp;
> +
> +	usb_phy_enable(pdata);
> +	/* enable FS/LS device */
> +	tmp = __raw_readl(ppriv->phy_regs + HW_USBPHY_CTRL);
> +	tmp |= (BM_USBPHY_CTRL_ENUTMILEVEL2 | BM_USBPHY_CTRL_ENUTMILEVEL3);
> +	__raw_writel(tmp, ppriv->phy_regs + HW_USBPHY_CTRL);
> +
> +	return 0;
> +}
> +
> +static void phy_clock_gate(struct mxs_usb_private_date *ppriv, bool on)
> +{
> +	u32 tmp;
> +
> +	if (on) {
> +		ppriv->internal_phy_clk_already_on += 1;
> +		if (ppriv->internal_phy_clk_already_on == 1) {
> +			tmp = BM_USBPHY_CTRL_SFTRST | BM_USBPHY_CTRL_CLKGATE;
> +			__raw_writel(tmp, ppriv->phy_regs + HW_USBPHY_CTRL_CLR);
> +		}
> +	} else {
> +		ppriv->internal_phy_clk_already_on -= 1;
> +		if (ppriv->internal_phy_clk_already_on == 0) {
> +			tmp = BM_USBPHY_CTRL_CLKGATE;
> +			__raw_writel(tmp, ppriv->phy_regs + HW_USBPHY_CTRL_SET);
> +		}
> +	}
> +	if (WARN_ON(ppriv->internal_phy_clk_already_on < 0))
> +		printk(KERN_ERR "please check phy clock ON/OFF sequence\n");
> +}
> +static int fsl_usb_host_init(struct platform_device *pdev)
> +{
> +	struct mxc_usbh_platform_data *pdata = pdev->dev.platform_data;
> +	struct mxs_usb_private_date *ppriv = pdata->ppriv;
> +
> +	ppriv->phy_regs = ioremap(MX28_USBPHY1_BASE_ADDR, SZ_8K);
> +	if (ppriv->phy_regs == NULL)
> +		return -ENOMEM;
> +
> +	ppriv->ctrl_regs = ioremap(MX28_USBCTRL1_BASE_ADDR, SZ_8K);
> +	if (ppriv->ctrl_regs == NULL)
> +		return -ENOMEM;
> +
What about proper cleanup in the error case?

> +	ppriv->usb_clk = clk_get(&pdev->dev, "usb1");
> +	if (IS_ERR(ppriv->usb_clk))
> +		return PTR_ERR(ppriv->usb_clk);
dto.

> +	clk_enable(ppriv->usb_clk);
> +
> +	ppriv->usb_phy_clk = clk_get(&pdev->dev, "usb1_phy");
> +	if (IS_ERR(ppriv->usb_phy_clk))
> +		return PTR_ERR(ppriv->usb_phy_clk);
dto.

> +	clk_enable(ppriv->usb_phy_clk);
> +
> +	phy_clock_gate(ppriv, true);
> +	return fsl_usbh_init(pdev);
> +}
> +
> +static int fsl_usb_host_uninit(struct platform_device *pdev)
> +{
> +	struct mxc_usbh_platform_data *pdata = pdev->dev.platform_data;
> +	struct mxs_usb_private_date *ppriv = pdata->ppriv;
> +
> +	phy_clock_gate(ppriv, false);
> +	if (ppriv->usb_phy_clk) {
>
> +		clk_disable(ppriv->usb_phy_clk);
> +		clk_put(ppriv->usb_phy_clk);
> +	}
> +	if (ppriv->usb_clk) {
> +		clk_disable(ppriv->usb_clk);
> +		clk_put(ppriv->usb_clk);
> +	}
> +	if (ppriv->phy_regs)
> +		iounmap(ppriv->phy_regs);
> +	if (ppriv->ctrl_regs)
> +		iounmap(ppriv->ctrl_regs);
> +
>
The 'if' clauses are redundant here. fsl_usb_host_uninit() will only
be called when fsl_usb_host_init() has succeeded and thus all pointers
have been set up correctly (which makes it necessary to have proper
cleanup code in fsl_usb_host_init()).


Lothar Waßmann
Lin Tony-B19295 - July 25, 2011, 7:26 a.m.
> -----Original Message-----

> From: linux-arm-kernel-bounces@lists.infradead.org [mailto:linux-arm-

> kernel-bounces@lists.infradead.org] On Behalf Of Lothar Wa?mann

> Sent: Monday, July 25, 2011 3:15 PM

> To: Lin Tony-B19295

> Cc: koen.beel.barco@gmail.com; linux-usb@vger.kernel.org;

> stern@rowland.harvard.edu; linux-arm-kernel@lists.infradead.org

> Subject: Re: [PATCH v2 5/6] ARM: mxs: add usb phy operations

> 

> Hi,

> 

> Tony Lin writes:

> > add usb phy register definitions and functions usb host driver will

> > use these callback functions to initialize usb phy and change working

> > mode

> >

> > Signed-off-by: Tony Lin <tony.lin@freescale.com>

> > ---

> >  arch/arm/mach-mxs/Kconfig            |    1 +

> >  arch/arm/mach-mxs/Makefile           |    1 +

> >  arch/arm/mach-mxs/mxs_usb.c          |  286

> ++++++++++++++++++++++++++++++++++

> >  arch/arm/mach-mxs/regs-usbphy-mx28.h |  240

> > ++++++++++++++++++++++++++++

> >  4 files changed, 528 insertions(+), 0 deletions(-)

> >

> > diff --git a/arch/arm/mach-mxs/Kconfig b/arch/arm/mach-mxs/Kconfig

> > index 4cd0231..1c4264f 100644

> > --- a/arch/arm/mach-mxs/Kconfig

> > +++ b/arch/arm/mach-mxs/Kconfig

> > @@ -49,6 +49,7 @@ config MACH_MX28EVK

> >  	select MXS_HAVE_PLATFORM_MXS_MMC

> >  	select MXS_HAVE_PLATFORM_MXSFB

> >  	select MXS_OCOTP

> > +	select USB_ARCH_HAS_EHCI

> >  	help

> >  	  Include support for MX28EVK platform. This includes specific

> >  	  configurations for the board and its peripherals.

> > diff --git a/arch/arm/mach-mxs/Makefile b/arch/arm/mach-mxs/Makefile

> > index 6c38262..726c49f 100644

> > --- a/arch/arm/mach-mxs/Makefile

> > +++ b/arch/arm/mach-mxs/Makefile

> > @@ -12,5 +12,6 @@ obj-$(CONFIG_MACH_MX23EVK) += mach-mx23evk.o

> >  obj-$(CONFIG_MACH_MX28EVK) += mach-mx28evk.o

> >  obj-$(CONFIG_MODULE_TX28) += module-tx28.o

> >  obj-$(CONFIG_MACH_TX28)    += mach-tx28.o

> > +obj-$(CONFIG_USB_EHCI_MXC)   += mxs_usb.o

> >

> >  obj-y += devices/

> > diff --git a/arch/arm/mach-mxs/mxs_usb.c b/arch/arm/mach-mxs/mxs_usb.c

> > new file mode 100644 index 0000000..01753ea

> > --- /dev/null

> > +++ b/arch/arm/mach-mxs/mxs_usb.c

> > @@ -0,0 +1,286 @@

> > +/*

> > + * Copyright (C) 2009-2011 Freescale Semiconductor, Inc. All Rights

> Reserved.

> > + *

> > + * This program is free software; you can redistribute it and/or

> > +modify

> > + * it under the terms of the GNU General Public License as published

> > +by

> > + * the Free Software Foundation; either version 2 of the License, or

> > + * (at your option) any later version.

> > + *

> > + * This program is distributed in the hope that it will be useful,

> > + * but WITHOUT ANY WARRANTY; without even the implied warranty of

> > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

> > + * GNU General Public License for more details.

> > + *

> > + * You should have received a copy of the GNU General Public License

> > +along

> > + * with this program; if not, write to the Free Software Foundation,

> > +Inc.,

> > + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

> > + */

> > +

> > +#include <linux/kernel.h>

> > +#include <linux/types.h>

> > +#include <linux/clk.h>

> > +#include <linux/delay.h>

> > +#include <linux/platform_device.h>

> > +#include <linux/io.h>

> > +#include <linux/err.h>

> > +#include <linux/fsl_devices.h>

> > +#include <linux/gpio.h>

> > +#include <asm/mach-types.h>

> > +#include <asm/mach/arch.h>

> > +#include <mach/irqs.h>

> > +#include <mach/mx28.h>

> > +#include "regs-usbphy-mx28.h"

> > +

> > +/* EHCI registers: */

> > +#define UOG_USBCMD		(0x140) /* USB command register */

> > +#define UOG_USBSTS		(0x144) /* USB status register */

> > +#define UOG_PORTSC1		(0x184) /* port status and control */

> > +/* x_PORTSCx */

> > +#define PORTSC_PTS_MASK		(3 << 30) /* parallel xcvr mask */

> > +#define PORTSC_PTS_UTMI		(0 << 30) /* UTMI/UTMI+ */

> > +#define PORTSC_PTW		(1 << 28) /* UTMI width */

> > +/* USBCMD */

> > +#define UCMD_RUN_STOP           (1 << 0) /* controller run/stop */

> > +#define UCMD_RESET		(1 << 1) /* controller reset */

> > +

> > +#define HOSTPHY_CONNECT_STATE	(1 << 3)

> > +#define STS_PCD			(1 << 2) /* port change detect */

> > +

> > +struct mxs_usb_private_date {

> > +	struct clk *usb_clk, *usb_phy_clk;

> > +	int internal_phy_clk_already_on;

> > +	void __iomem *phy_regs;		/* usb phy register base */

> > +	void __iomem *ctrl_regs;	/* usb controller register base */

> > +};

> > +

> > +static inline int fsl_platform_get_usb_connect_status

> > +			(struct mxs_usb_private_date *ppriv) {

> > +	u32 status;

> > +

> > +	status = __raw_readl(ppriv->phy_regs + HW_USBPHY_STATUS);

> > +

> > +	return ((status & HOSTPHY_CONNECT_STATE) == 0); }

> > +

> > +/* enable/disable high-speed disconnect detector of phy ctrl */

> > +static inline void fsl_platform_disconnect_detect

> > +			(struct mxs_usb_private_date *ppriv, int enable) {

> > +	if (enable) {

> > +		__raw_writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,

> > +		ppriv->phy_regs + HW_USBPHY_CTRL_SET);

> > +	} else {

> > +		__raw_writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,

> > +		ppriv->phy_regs + HW_USBPHY_CTRL_CLR);

> > +	}

> > +}

> > +

> > +static void fsl_plt_usbh_irq_handler(struct mxc_usbh_platform_data

> > +*pdata) {

> > +	u32			status;

> > +	struct mxs_usb_private_date *ppriv = pdata->ppriv;

> > +

> > +	status = __raw_readl(ppriv->ctrl_regs + UOG_USBSTS);

> > +

> > +	if (status & STS_PCD)

> > +		fsl_platform_disconnect_detect(ppriv,

> > +			fsl_platform_get_usb_connect_status(ppriv));

> > +}

> > +

> > +static int usb_phy_enable(struct mxc_usbh_platform_data *pdata) {

> > +	u32 tmp;

> > +	u32 i = 0;

> > +	struct mxs_usb_private_date *ppriv = pdata->ppriv;

> > +	void __iomem *usbcmd, *phy_ctrl, *portsc;

> > +

> > +	/* Reset USB IP */

> > +	/* Set run stop bit */

> > +	/* Send reset command */

> > +	usbcmd = ppriv->ctrl_regs + UOG_USBCMD;

> > +	tmp = __raw_readl(usbcmd); /* usb command */

> > +	tmp &= ~UCMD_RUN_STOP;

> > +	__raw_writel(tmp, usbcmd);

> > +	while (__raw_readl(usbcmd) & UCMD_RUN_STOP) {

> > +		i++;

> > +		if (i == 1000)

> > +			break;

> > +		mdelay(1);

> > +	}

> > +	tmp |= UCMD_RESET;

> > +	__raw_writel(tmp, usbcmd);

> > +	i = 0;

> > +	while (__raw_readl(usbcmd) & UCMD_RESET) {

> > +		i++;

> > +		if (i == 1000)

> > +			break;

> > +		mdelay(1);

> > +	}

> > +	mdelay(10);

> > +

> > +	/* Reset USBPHY module, set soft reset bit */

> > +	phy_ctrl = ppriv->phy_regs + HW_USBPHY_CTRL;

> > +	tmp = __raw_readl(phy_ctrl);

> > +	tmp |= BM_USBPHY_CTRL_SFTRST;

> > +	__raw_writel(tmp, phy_ctrl);

> > +	udelay(10);

> > +

> > +	/* clear CLKGATE and SFTRST bits to be out of reset mode*/

> > +	tmp = __raw_readl(phy_ctrl);

> > +	tmp &= ~(BM_USBPHY_CTRL_CLKGATE | BM_USBPHY_CTRL_SFTRST);

> > +	__raw_writel(tmp, phy_ctrl);

> > +	udelay(10);

> > +

> > +	/* set UTMI xcvr */

> > +	/* Workaround an IC issue for ehci driver:

> > +	 * when turn off root hub port power, EHCI set

> > +	 * PORTSC reserved bits to be 0, but PTW with 0

> > +	 * means 8 bits tranceiver width, here change

> > +	 * it back to be 16 bits and do PHY diable and

> > +	 * then enable.

> > +	 */

> > +	portsc = ppriv->ctrl_regs + UOG_PORTSC1;

> > +	tmp = __raw_readl(portsc);

> > +	tmp &=  ~PORTSC_PTS_MASK;

> > +	tmp |= (PORTSC_PTS_UTMI | PORTSC_PTW);

> > +	__raw_writel(tmp, portsc);

> > +

> > +	/* Power up the PHY */

> > +	__raw_writel(0, ppriv->phy_regs + HW_USBPHY_PWD);

> > +	return 0;

> > +}

> > +

> > +static int fsl_usbh_init(struct platform_device *pdev) {

> > +	struct mxc_usbh_platform_data *pdata = pdev->dev.platform_data;

> > +	struct mxs_usb_private_date *ppriv = pdata->ppriv;

> > +	u32 tmp;

> > +

> > +	usb_phy_enable(pdata);

> > +	/* enable FS/LS device */

> > +	tmp = __raw_readl(ppriv->phy_regs + HW_USBPHY_CTRL);

> > +	tmp |= (BM_USBPHY_CTRL_ENUTMILEVEL2 | BM_USBPHY_CTRL_ENUTMILEVEL3);

> > +	__raw_writel(tmp, ppriv->phy_regs + HW_USBPHY_CTRL);

> > +

> > +	return 0;

> > +}

> > +

> > +static void phy_clock_gate(struct mxs_usb_private_date *ppriv, bool

> > +on) {

> > +	u32 tmp;

> > +

> > +	if (on) {

> > +		ppriv->internal_phy_clk_already_on += 1;

> > +		if (ppriv->internal_phy_clk_already_on == 1) {

> > +			tmp = BM_USBPHY_CTRL_SFTRST | BM_USBPHY_CTRL_CLKGATE;

> > +			__raw_writel(tmp, ppriv->phy_regs + HW_USBPHY_CTRL_CLR);

> > +		}

> > +	} else {

> > +		ppriv->internal_phy_clk_already_on -= 1;

> > +		if (ppriv->internal_phy_clk_already_on == 0) {

> > +			tmp = BM_USBPHY_CTRL_CLKGATE;

> > +			__raw_writel(tmp, ppriv->phy_regs + HW_USBPHY_CTRL_SET);

> > +		}

> > +	}

> > +	if (WARN_ON(ppriv->internal_phy_clk_already_on < 0))

> > +		printk(KERN_ERR "please check phy clock ON/OFF sequence\n"); }

> > +static int fsl_usb_host_init(struct platform_device *pdev) {

> > +	struct mxc_usbh_platform_data *pdata = pdev->dev.platform_data;

> > +	struct mxs_usb_private_date *ppriv = pdata->ppriv;

> > +

> > +	ppriv->phy_regs = ioremap(MX28_USBPHY1_BASE_ADDR, SZ_8K);

> > +	if (ppriv->phy_regs == NULL)

> > +		return -ENOMEM;

> > +

> > +	ppriv->ctrl_regs = ioremap(MX28_USBCTRL1_BASE_ADDR, SZ_8K);

> > +	if (ppriv->ctrl_regs == NULL)

> > +		return -ENOMEM;

> > +

> What about proper cleanup in the error case?

> 

> > +	ppriv->usb_clk = clk_get(&pdev->dev, "usb1");

> > +	if (IS_ERR(ppriv->usb_clk))

> > +		return PTR_ERR(ppriv->usb_clk);

> dto.

> 

> > +	clk_enable(ppriv->usb_clk);

> > +

> > +	ppriv->usb_phy_clk = clk_get(&pdev->dev, "usb1_phy");

> > +	if (IS_ERR(ppriv->usb_phy_clk))

> > +		return PTR_ERR(ppriv->usb_phy_clk);

> dto.

> 

> > +	clk_enable(ppriv->usb_phy_clk);

> > +

> > +	phy_clock_gate(ppriv, true);

> > +	return fsl_usbh_init(pdev);

> > +}

> > +

> > +static int fsl_usb_host_uninit(struct platform_device *pdev) {

> > +	struct mxc_usbh_platform_data *pdata = pdev->dev.platform_data;

> > +	struct mxs_usb_private_date *ppriv = pdata->ppriv;

> > +

> > +	phy_clock_gate(ppriv, false);

> > +	if (ppriv->usb_phy_clk) {

> >

> > +		clk_disable(ppriv->usb_phy_clk);

> > +		clk_put(ppriv->usb_phy_clk);

> > +	}

> > +	if (ppriv->usb_clk) {

> > +		clk_disable(ppriv->usb_clk);

> > +		clk_put(ppriv->usb_clk);

> > +	}

> > +	if (ppriv->phy_regs)

> > +		iounmap(ppriv->phy_regs);

> > +	if (ppriv->ctrl_regs)

> > +		iounmap(ppriv->ctrl_regs);

> > +

> >

> The 'if' clauses are redundant here. fsl_usb_host_uninit() will only be

> called when fsl_usb_host_init() has succeeded and thus all pointers have

> been set up correctly (which makes it necessary to have proper cleanup

> code in fsl_usb_host_init()).

> 

> 

Yes, silly mistake. Will correct it. 

> Lothar Waßmann

> --

> ___________________________________________________________

> 

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> 

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> ___________________________________________________________

> 

> _______________________________________________

> linux-arm-kernel mailing list

> linux-arm-kernel@lists.infradead.org

> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
Russell King - ARM Linux - July 25, 2011, 8:24 a.m.
On Mon, Jul 25, 2011 at 09:15:23AM +0200, Lothar Waßmann wrote:
> > +	if (WARN_ON(ppriv->internal_phy_clk_already_on < 0))
> > +		printk(KERN_ERR "please check phy clock ON/OFF sequence\n");
> > +}

And there should be a blank line here.

> > +static int fsl_usb_host_init(struct platform_device *pdev)
> > +{
> > +	struct mxc_usbh_platform_data *pdata = pdev->dev.platform_data;
> > +	struct mxs_usb_private_date *ppriv = pdata->ppriv;
> > +
> > +	ppriv->phy_regs = ioremap(MX28_USBPHY1_BASE_ADDR, SZ_8K);
> > +	if (ppriv->phy_regs == NULL)
> > +		return -ENOMEM;
> > +
> > +	ppriv->ctrl_regs = ioremap(MX28_USBCTRL1_BASE_ADDR, SZ_8K);
> > +	if (ppriv->ctrl_regs == NULL)
> > +		return -ENOMEM;
> > +
> What about proper cleanup in the error case?

Doing something like this is probably easiest:

	ppriv->phy_regs = ioremap(MX28_USBPHY1_BASE_ADDR, SZ_8K);
	ppriv->ctrl_regs = ioremap(MX28_USBCTRL1_BASE_ADDR, SZ_8K);
	if (!ppriv->phy_regs || !ppriv_ctrl_regs) {
		iounmap(ppriv->phy_regs);
		iounmap(ppriv->ctrl_regs);
		return -ENOMEM;
	}

As iounmap ignores NULL pointers.
Lin Tony-B19295 - July 26, 2011, 2:05 a.m.
> -----Original Message-----
> From: Russell King - ARM Linux [mailto:linux@arm.linux.org.uk]
> Sent: Monday, July 25, 2011 4:24 PM
> To: Lothar Waßmann
> Cc: Lin Tony-B19295; koen.beel.barco@gmail.com; linux-usb@vger.kernel.org;
> stern@rowland.harvard.edu; linux-arm-kernel@lists.infradead.org
> Subject: Re: [PATCH v2 5/6] ARM: mxs: add usb phy operations
> 
> On Mon, Jul 25, 2011 at 09:15:23AM +0200, Lothar Waßmann wrote:
> > > +	if (WARN_ON(ppriv->internal_phy_clk_already_on < 0))
> > > +		printk(KERN_ERR "please check phy clock ON/OFF sequence\n"); }
> 
> And there should be a blank line here.
> 
> > > +static int fsl_usb_host_init(struct platform_device *pdev) {
> > > +	struct mxc_usbh_platform_data *pdata = pdev->dev.platform_data;
> > > +	struct mxs_usb_private_date *ppriv = pdata->ppriv;
> > > +
> > > +	ppriv->phy_regs = ioremap(MX28_USBPHY1_BASE_ADDR, SZ_8K);
> > > +	if (ppriv->phy_regs == NULL)
> > > +		return -ENOMEM;
> > > +
> > > +	ppriv->ctrl_regs = ioremap(MX28_USBCTRL1_BASE_ADDR, SZ_8K);
> > > +	if (ppriv->ctrl_regs == NULL)
> > > +		return -ENOMEM;
> > > +
> > What about proper cleanup in the error case?
> 
> Doing something like this is probably easiest:
> 
> 	ppriv->phy_regs = ioremap(MX28_USBPHY1_BASE_ADDR, SZ_8K);
> 	ppriv->ctrl_regs = ioremap(MX28_USBCTRL1_BASE_ADDR, SZ_8K);
> 	if (!ppriv->phy_regs || !ppriv_ctrl_regs) {
> 		iounmap(ppriv->phy_regs);
> 		iounmap(ppriv->ctrl_regs);
> 		return -ENOMEM;
> 	}
> 
> As iounmap ignores NULL pointers.
 good suggestion, thank you.
Koen Beel - July 26, 2011, 7:07 a.m.
Hi,

From what I see in the datasheet of mx23/mx28, phy regs for mx23 and
mx28 are the same.
Then it might be better to name the file regs-usbphy-mxs.h instead of
regs-usbphy-mx28.h.

Koen

On Mon, Jul 25, 2011 at 9:01 AM, Tony Lin <tony.lin@freescale.com> wrote:
> add usb phy register definitions and functions
> usb host driver will use these callback functions
> to initialize usb phy and change working mode
>
> Signed-off-by: Tony Lin <tony.lin@freescale.com>
> ---
>  arch/arm/mach-mxs/Kconfig            |    1 +
>  arch/arm/mach-mxs/Makefile           |    1 +
>  arch/arm/mach-mxs/mxs_usb.c          |  286 ++++++++++++++++++++++++++++++++++
>  arch/arm/mach-mxs/regs-usbphy-mx28.h |  240 ++++++++++++++++++++++++++++
>  4 files changed, 528 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/mach-mxs/Kconfig b/arch/arm/mach-mxs/Kconfig
> index 4cd0231..1c4264f 100644
> --- a/arch/arm/mach-mxs/Kconfig
> +++ b/arch/arm/mach-mxs/Kconfig
> @@ -49,6 +49,7 @@ config MACH_MX28EVK
>        select MXS_HAVE_PLATFORM_MXS_MMC
>        select MXS_HAVE_PLATFORM_MXSFB
>        select MXS_OCOTP
> +       select USB_ARCH_HAS_EHCI
>        help
>          Include support for MX28EVK platform. This includes specific
>          configurations for the board and its peripherals.
> diff --git a/arch/arm/mach-mxs/Makefile b/arch/arm/mach-mxs/Makefile
> index 6c38262..726c49f 100644
> --- a/arch/arm/mach-mxs/Makefile
> +++ b/arch/arm/mach-mxs/Makefile
> @@ -12,5 +12,6 @@ obj-$(CONFIG_MACH_MX23EVK) += mach-mx23evk.o
>  obj-$(CONFIG_MACH_MX28EVK) += mach-mx28evk.o
>  obj-$(CONFIG_MODULE_TX28) += module-tx28.o
>  obj-$(CONFIG_MACH_TX28)    += mach-tx28.o
> +obj-$(CONFIG_USB_EHCI_MXC)   += mxs_usb.o
>
>  obj-y += devices/
> diff --git a/arch/arm/mach-mxs/mxs_usb.c b/arch/arm/mach-mxs/mxs_usb.c
> new file mode 100644
> index 0000000..01753ea
> --- /dev/null
> +++ b/arch/arm/mach-mxs/mxs_usb.c
> @@ -0,0 +1,286 @@
> +/*
> + * Copyright (C) 2009-2011 Freescale Semiconductor, Inc. All Rights Reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License along
> + * with this program; if not, write to the Free Software Foundation, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/types.h>
> +#include <linux/clk.h>
> +#include <linux/delay.h>
> +#include <linux/platform_device.h>
> +#include <linux/io.h>
> +#include <linux/err.h>
> +#include <linux/fsl_devices.h>
> +#include <linux/gpio.h>
> +#include <asm/mach-types.h>
> +#include <asm/mach/arch.h>
> +#include <mach/irqs.h>
> +#include <mach/mx28.h>
> +#include "regs-usbphy-mx28.h"
> +
> +/* EHCI registers: */
> +#define UOG_USBCMD             (0x140) /* USB command register */
> +#define UOG_USBSTS             (0x144) /* USB status register */
> +#define UOG_PORTSC1            (0x184) /* port status and control */
> +/* x_PORTSCx */
> +#define PORTSC_PTS_MASK                (3 << 30) /* parallel xcvr mask */
> +#define PORTSC_PTS_UTMI                (0 << 30) /* UTMI/UTMI+ */
> +#define PORTSC_PTW             (1 << 28) /* UTMI width */
> +/* USBCMD */
> +#define UCMD_RUN_STOP           (1 << 0) /* controller run/stop */
> +#define UCMD_RESET             (1 << 1) /* controller reset */
> +
> +#define HOSTPHY_CONNECT_STATE  (1 << 3)
> +#define STS_PCD                        (1 << 2) /* port change detect */
> +
> +struct mxs_usb_private_date {
> +       struct clk *usb_clk, *usb_phy_clk;
> +       int internal_phy_clk_already_on;
> +       void __iomem *phy_regs;         /* usb phy register base */
> +       void __iomem *ctrl_regs;        /* usb controller register base */
> +};
> +
> +static inline int fsl_platform_get_usb_connect_status
> +                       (struct mxs_usb_private_date *ppriv)
> +{
> +       u32 status;
> +
> +       status = __raw_readl(ppriv->phy_regs + HW_USBPHY_STATUS);
> +
> +       return ((status & HOSTPHY_CONNECT_STATE) == 0);
> +}
> +
> +/* enable/disable high-speed disconnect detector of phy ctrl */
> +static inline void fsl_platform_disconnect_detect
> +                       (struct mxs_usb_private_date *ppriv, int enable)
> +{
> +       if (enable) {
> +               __raw_writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
> +               ppriv->phy_regs + HW_USBPHY_CTRL_SET);
> +       } else {
> +               __raw_writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
> +               ppriv->phy_regs + HW_USBPHY_CTRL_CLR);
> +       }
> +}
> +
> +static void fsl_plt_usbh_irq_handler(struct mxc_usbh_platform_data *pdata)
> +{
> +       u32                     status;
> +       struct mxs_usb_private_date *ppriv = pdata->ppriv;
> +
> +       status = __raw_readl(ppriv->ctrl_regs + UOG_USBSTS);
> +
> +       if (status & STS_PCD)
> +               fsl_platform_disconnect_detect(ppriv,
> +                       fsl_platform_get_usb_connect_status(ppriv));
> +}
> +
> +static int usb_phy_enable(struct mxc_usbh_platform_data *pdata)
> +{
> +       u32 tmp;
> +       u32 i = 0;
> +       struct mxs_usb_private_date *ppriv = pdata->ppriv;
> +       void __iomem *usbcmd, *phy_ctrl, *portsc;
> +
> +       /* Reset USB IP */
> +       /* Set run stop bit */
> +       /* Send reset command */
> +       usbcmd = ppriv->ctrl_regs + UOG_USBCMD;
> +       tmp = __raw_readl(usbcmd); /* usb command */
> +       tmp &= ~UCMD_RUN_STOP;
> +       __raw_writel(tmp, usbcmd);
> +       while (__raw_readl(usbcmd) & UCMD_RUN_STOP) {
> +               i++;
> +               if (i == 1000)
> +                       break;
> +               mdelay(1);
> +       }
> +       tmp |= UCMD_RESET;
> +       __raw_writel(tmp, usbcmd);
> +       i = 0;
> +       while (__raw_readl(usbcmd) & UCMD_RESET) {
> +               i++;
> +               if (i == 1000)
> +                       break;
> +               mdelay(1);
> +       }
> +       mdelay(10);
> +
> +       /* Reset USBPHY module, set soft reset bit */
> +       phy_ctrl = ppriv->phy_regs + HW_USBPHY_CTRL;
> +       tmp = __raw_readl(phy_ctrl);
> +       tmp |= BM_USBPHY_CTRL_SFTRST;
> +       __raw_writel(tmp, phy_ctrl);
> +       udelay(10);
> +
> +       /* clear CLKGATE and SFTRST bits to be out of reset mode*/
> +       tmp = __raw_readl(phy_ctrl);
> +       tmp &= ~(BM_USBPHY_CTRL_CLKGATE | BM_USBPHY_CTRL_SFTRST);
> +       __raw_writel(tmp, phy_ctrl);
> +       udelay(10);
> +
> +       /* set UTMI xcvr */
> +       /* Workaround an IC issue for ehci driver:
> +        * when turn off root hub port power, EHCI set
> +        * PORTSC reserved bits to be 0, but PTW with 0
> +        * means 8 bits tranceiver width, here change
> +        * it back to be 16 bits and do PHY diable and
> +        * then enable.
> +        */
> +       portsc = ppriv->ctrl_regs + UOG_PORTSC1;
> +       tmp = __raw_readl(portsc);
> +       tmp &=  ~PORTSC_PTS_MASK;
> +       tmp |= (PORTSC_PTS_UTMI | PORTSC_PTW);
> +       __raw_writel(tmp, portsc);
> +
> +       /* Power up the PHY */
> +       __raw_writel(0, ppriv->phy_regs + HW_USBPHY_PWD);
> +       return 0;
> +}
> +
> +static int fsl_usbh_init(struct platform_device *pdev)
> +{
> +       struct mxc_usbh_platform_data *pdata = pdev->dev.platform_data;
> +       struct mxs_usb_private_date *ppriv = pdata->ppriv;
> +       u32 tmp;
> +
> +       usb_phy_enable(pdata);
> +       /* enable FS/LS device */
> +       tmp = __raw_readl(ppriv->phy_regs + HW_USBPHY_CTRL);
> +       tmp |= (BM_USBPHY_CTRL_ENUTMILEVEL2 | BM_USBPHY_CTRL_ENUTMILEVEL3);
> +       __raw_writel(tmp, ppriv->phy_regs + HW_USBPHY_CTRL);
> +
> +       return 0;
> +}
> +
> +static void phy_clock_gate(struct mxs_usb_private_date *ppriv, bool on)
> +{
> +       u32 tmp;
> +
> +       if (on) {
> +               ppriv->internal_phy_clk_already_on += 1;
> +               if (ppriv->internal_phy_clk_already_on == 1) {
> +                       tmp = BM_USBPHY_CTRL_SFTRST | BM_USBPHY_CTRL_CLKGATE;
> +                       __raw_writel(tmp, ppriv->phy_regs + HW_USBPHY_CTRL_CLR);
> +               }
> +       } else {
> +               ppriv->internal_phy_clk_already_on -= 1;
> +               if (ppriv->internal_phy_clk_already_on == 0) {
> +                       tmp = BM_USBPHY_CTRL_CLKGATE;
> +                       __raw_writel(tmp, ppriv->phy_regs + HW_USBPHY_CTRL_SET);
> +               }
> +       }
> +       if (WARN_ON(ppriv->internal_phy_clk_already_on < 0))
> +               printk(KERN_ERR "please check phy clock ON/OFF sequence\n");
> +}
> +static int fsl_usb_host_init(struct platform_device *pdev)
> +{
> +       struct mxc_usbh_platform_data *pdata = pdev->dev.platform_data;
> +       struct mxs_usb_private_date *ppriv = pdata->ppriv;
> +
> +       ppriv->phy_regs = ioremap(MX28_USBPHY1_BASE_ADDR, SZ_8K);
> +       if (ppriv->phy_regs == NULL)
> +               return -ENOMEM;
> +
> +       ppriv->ctrl_regs = ioremap(MX28_USBCTRL1_BASE_ADDR, SZ_8K);
> +       if (ppriv->ctrl_regs == NULL)
> +               return -ENOMEM;
> +
> +       ppriv->usb_clk = clk_get(&pdev->dev, "usb1");
> +       if (IS_ERR(ppriv->usb_clk))
> +               return PTR_ERR(ppriv->usb_clk);
> +       clk_enable(ppriv->usb_clk);
> +
> +       ppriv->usb_phy_clk = clk_get(&pdev->dev, "usb1_phy");
> +       if (IS_ERR(ppriv->usb_phy_clk))
> +               return PTR_ERR(ppriv->usb_phy_clk);
> +       clk_enable(ppriv->usb_phy_clk);
> +
> +       phy_clock_gate(ppriv, true);
> +       return fsl_usbh_init(pdev);
> +}
> +
> +static int fsl_usb_host_uninit(struct platform_device *pdev)
> +{
> +       struct mxc_usbh_platform_data *pdata = pdev->dev.platform_data;
> +       struct mxs_usb_private_date *ppriv = pdata->ppriv;
> +
> +       phy_clock_gate(ppriv, false);
> +       if (ppriv->usb_phy_clk) {
> +               clk_disable(ppriv->usb_phy_clk);
> +               clk_put(ppriv->usb_phy_clk);
> +       }
> +       if (ppriv->usb_clk) {
> +               clk_disable(ppriv->usb_clk);
> +               clk_put(ppriv->usb_clk);
> +       }
> +       if (ppriv->phy_regs)
> +               iounmap(ppriv->phy_regs);
> +       if (ppriv->ctrl_regs)
> +               iounmap(ppriv->ctrl_regs);
> +
> +       return 0;
> +}
> +
> +static struct mxs_usb_private_date usbh_private = {
> +       .internal_phy_clk_already_on = 0,
> +};
> +
> +static struct mxc_usbh_platform_data usbh_config = {
> +       .init = fsl_usb_host_init,
> +       .exit = fsl_usb_host_uninit,
> +       .portsc = MXC_EHCI_MODE_ULPI,
> +       .otg = NULL,
> +       .plt_irq_handler = fsl_plt_usbh_irq_handler,
> +       .ppriv = &usbh_private,
> +};
> +
> +/* The resources for kinds of usb devices */
> +static struct resource usbh_resources[] = {
> +       {
> +               .start = MX28_USBCTRL1_BASE_ADDR,
> +               .end = MX28_USBCTRL1_BASE_ADDR + 0x1ff,
> +               .flags = IORESOURCE_MEM,
> +       },
> +       {
> +               .start = MX28_INT_USB1,
> +               .flags = IORESOURCE_IRQ,
> +       },
> +};
> +
> +static int __init usbh_init(void)
> +{
> +       struct platform_device *pdev;
> +       int instance_id = ~(u32) 0;
> +       u64 ehci_dmamask = ~(u32) 0;
> +
> +       if (!cpu_is_mx28())
> +               return 0;
> +
> +       pdev = platform_device_register_resndata(NULL, "mxc-ehci", instance_id,
> +                       usbh_resources, ARRAY_SIZE(usbh_resources),
> +                       &usbh_config, sizeof(struct mxc_usbh_platform_data));
> +       if (IS_ERR(pdev)) {
> +               pr_debug("can't register Host, %ld\n", PTR_ERR(pdev));
> +               return PTR_ERR(pdev);
> +       }
> +
> +       pdev->dev.coherent_dma_mask = 0xffffffff;
> +       pdev->dev.dma_mask = &ehci_dmamask;
> +
> +       return 0;
> +}
> +module_init(usbh_init);
> diff --git a/arch/arm/mach-mxs/regs-usbphy-mx28.h b/arch/arm/mach-mxs/regs-usbphy-mx28.h
> new file mode 100644
> index 0000000..2ec273b
> --- /dev/null
> +++ b/arch/arm/mach-mxs/regs-usbphy-mx28.h
> @@ -0,0 +1,240 @@
> +/*
> + * Freescale USBPHY Register Definitions
> + *
> + * Copyright 2008-2011 Freescale Semiconductor, Inc. All Rights Reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
> + *
> + *
> + * Xml Revision: 1.52
> + * Template revision: 26195
> + */
> +
> +#ifndef __ARCH_ARM___USBPHY_H
> +#define __ARCH_ARM___USBPHY_H
> +
> +
> +#define HW_USBPHY_PWD          0x00000000
> +#define HW_USBPHY_PWD_SET      0x00000004
> +#define HW_USBPHY_PWD_CLR      0x00000008
> +#define HW_USBPHY_PWD_TOG      0x0000000c
> +
> +#define BM_USBPHY_PWD_RXPWDRX  0x00100000
> +#define BM_USBPHY_PWD_RXPWDDIFF        0x00080000
> +#define BM_USBPHY_PWD_RXPWD1PT1        0x00040000
> +#define BM_USBPHY_PWD_RXPWDENV 0x00020000
> +
> +#define BM_USBPHY_PWD_TXPWDV2I 0x00001000
> +#define BM_USBPHY_PWD_TXPWDIBIAS       0x00000800
> +#define BM_USBPHY_PWD_TXPWDFS  0x00000400
> +
> +#define HW_USBPHY_TX           0x00000010
> +#define HW_USBPHY_TX_SET       0x00000014
> +#define HW_USBPHY_TX_CLR       0x00000018
> +#define HW_USBPHY_TX_TOG       0x0000001c
> +
> +#define BP_USBPHY_TX_USBPHY_TX_EDGECTRL        26
> +#define BM_USBPHY_TX_USBPHY_TX_EDGECTRL        0x1C000000
> +#define BF_USBPHY_TX_USBPHY_TX_EDGECTRL(v)  \
> +               (((v) << 26) & BM_USBPHY_TX_USBPHY_TX_EDGECTRL)
> +#define BM_USBPHY_TX_USBPHY_TX_SYNC_INVERT     0x02000000
> +#define BM_USBPHY_TX_USBPHY_TX_SYNC_MUX        0x01000000
> +
> +#define BM_USBPHY_TX_TXENCAL45DP       0x00200000
> +#define BP_USBPHY_TX_TXCAL45DP 16
> +#define BM_USBPHY_TX_TXCAL45DP 0x000F0000
> +#define BF_USBPHY_TX_TXCAL45DP(v)  \
> +               (((v) << 16) & BM_USBPHY_TX_TXCAL45DP)
> +#define BM_USBPHY_TX_TXENCAL45DN       0x00002000
> +#define BP_USBPHY_TX_TXCAL45DN 8
> +#define BM_USBPHY_TX_TXCAL45DN 0x00000F00
> +#define BF_USBPHY_TX_TXCAL45DN(v)  \
> +               (((v) << 8) & BM_USBPHY_TX_TXCAL45DN)
> +
> +#define BP_USBPHY_TX_D_CAL     0
> +#define BM_USBPHY_TX_D_CAL     0x0000000F
> +#define BF_USBPHY_TX_D_CAL(v)  \
> +               (((v) << 0) & BM_USBPHY_TX_D_CAL)
> +
> +#define HW_USBPHY_RX           0x00000020
> +#define HW_USBPHY_RX_SET       0x00000024
> +#define HW_USBPHY_RX_CLR       0x00000028
> +#define HW_USBPHY_RX_TOG       0x0000002c
> +
> +#define BM_USBPHY_RX_RXDBYPASS 0x00400000
> +#define BP_USBPHY_RX_DISCONADJ 4
> +#define BM_USBPHY_RX_DISCONADJ 0x00000070
> +#define BF_USBPHY_RX_DISCONADJ(v)  \
> +               (((v) << 4) & BM_USBPHY_RX_DISCONADJ)
> +#define BP_USBPHY_RX_ENVADJ    0
> +#define BM_USBPHY_RX_ENVADJ    0x00000007
> +#define BF_USBPHY_RX_ENVADJ(v)  \
> +               (((v) << 0) & BM_USBPHY_RX_ENVADJ)
> +
> +#define HW_USBPHY_CTRL         0x00000030
> +#define HW_USBPHY_CTRL_SET     0x00000034
> +#define HW_USBPHY_CTRL_CLR     0x00000038
> +#define HW_USBPHY_CTRL_TOG     0x0000003c
> +
> +#define BM_USBPHY_CTRL_SFTRST  0x80000000
> +#define BM_USBPHY_CTRL_CLKGATE 0x40000000
> +#define BM_USBPHY_CTRL_UTMI_SUSPENDM   0x20000000
> +#define BM_USBPHY_CTRL_HOST_FORCE_LS_SE0       0x10000000
> +#define BM_USBPHY_CTRL_ENAUTOSET_USBCLKS       0x04000000
> +#define BM_USBPHY_CTRL_ENAUTOCLR_USBCLKGATE    0x02000000
> +#define BM_USBPHY_CTRL_FSDLL_RST_EN    0x01000000
> +#define BM_USBPHY_CTRL_ENVBUSCHG_WKUP  0x00800000
> +#define BM_USBPHY_CTRL_ENIDCHG_WKUP    0x00400000
> +#define BM_USBPHY_CTRL_ENDPDMCHG_WKUP  0x00200000
> +#define BM_USBPHY_CTRL_ENAUTOCLR_PHY_PWD       0x00100000
> +#define BM_USBPHY_CTRL_ENAUTOCLR_CLKGATE       0x00080000
> +#define BM_USBPHY_CTRL_ENAUTO_PWRON_PLL        0x00040000
> +#define BM_USBPHY_CTRL_WAKEUP_IRQ      0x00020000
> +#define BM_USBPHY_CTRL_ENIRQWAKEUP     0x00010000
> +#define BM_USBPHY_CTRL_ENUTMILEVEL3    0x00008000
> +#define BM_USBPHY_CTRL_ENUTMILEVEL2    0x00004000
> +#define BM_USBPHY_CTRL_DATA_ON_LRADC   0x00002000
> +#define BM_USBPHY_CTRL_DEVPLUGIN_IRQ   0x00001000
> +#define BM_USBPHY_CTRL_ENIRQDEVPLUGIN  0x00000800
> +#define BM_USBPHY_CTRL_RESUME_IRQ      0x00000400
> +#define BM_USBPHY_CTRL_ENIRQRESUMEDETECT       0x00000200
> +#define BM_USBPHY_CTRL_RESUMEIRQSTICKY 0x00000100
> +#define BM_USBPHY_CTRL_ENOTGIDDETECT   0x00000080
> +#define BM_USBPHY_CTRL_DEVPLUGIN_POLARITY      0x00000020
> +#define BM_USBPHY_CTRL_ENDEVPLUGINDETECT       0x00000010
> +#define BM_USBPHY_CTRL_HOSTDISCONDETECT_IRQ    0x00000008
> +#define BM_USBPHY_CTRL_ENIRQHOSTDISCON 0x00000004
> +#define BM_USBPHY_CTRL_ENHOSTDISCONDETECT      0x00000002
> +
> +#define HW_USBPHY_STATUS       0x00000040
> +
> +#define BM_USBPHY_STATUS_RESUME_STATUS 0x00000400
> +#define BM_USBPHY_STATUS_OTGID_STATUS  0x00000100
> +#define BM_USBPHY_STATUS_DEVPLUGIN_STATUS      0x00000040
> +#define BM_USBPHY_STATUS_HOSTDISCONDETECT_STATUS       0x00000008
> +
> +#define HW_USBPHY_DEBUG                0x00000050
> +#define HW_USBPHY_DEBUG_SET    0x00000054
> +#define HW_USBPHY_DEBUG_CLR    0x00000058
> +#define HW_USBPHY_DEBUG_TOG    0x0000005c
> +
> +#define BM_USBPHY_DEBUG_CLKGATE        0x40000000
> +#define BM_USBPHY_DEBUG_HOST_RESUME_DEBUG      0x20000000
> +#define BP_USBPHY_DEBUG_SQUELCHRESETLENGTH     25
> +#define BM_USBPHY_DEBUG_SQUELCHRESETLENGTH     0x1E000000
> +#define BF_USBPHY_DEBUG_SQUELCHRESETLENGTH(v)  \
> +               (((v) << 25) & BM_USBPHY_DEBUG_SQUELCHRESETLENGTH)
> +#define BM_USBPHY_DEBUG_ENSQUELCHRESET 0x01000000
> +#define BP_USBPHY_DEBUG_SQUELCHRESETCOUNT      16
> +#define BM_USBPHY_DEBUG_SQUELCHRESETCOUNT      0x001F0000
> +#define BF_USBPHY_DEBUG_SQUELCHRESETCOUNT(v)  \
> +               (((v) << 16) & BM_USBPHY_DEBUG_SQUELCHRESETCOUNT)
> +#define BM_USBPHY_DEBUG_ENTX2RXCOUNT   0x00001000
> +#define BP_USBPHY_DEBUG_TX2RXCOUNT     8
> +#define BM_USBPHY_DEBUG_TX2RXCOUNT     0x00000F00
> +#define BF_USBPHY_DEBUG_TX2RXCOUNT(v)  \
> +               (((v) << 8) & BM_USBPHY_DEBUG_TX2RXCOUNT)
> +#define BP_USBPHY_DEBUG_ENHSTPULLDOWN  4
> +#define BM_USBPHY_DEBUG_ENHSTPULLDOWN  0x00000030
> +#define BF_USBPHY_DEBUG_ENHSTPULLDOWN(v)  \
> +               (((v) << 4) & BM_USBPHY_DEBUG_ENHSTPULLDOWN)
> +#define BP_USBPHY_DEBUG_HSTPULLDOWN    2
> +#define BM_USBPHY_DEBUG_HSTPULLDOWN    0x0000000C
> +#define BF_USBPHY_DEBUG_HSTPULLDOWN(v)  \
> +               (((v) << 2) & BM_USBPHY_DEBUG_HSTPULLDOWN)
> +#define BM_USBPHY_DEBUG_DEBUG_INTERFACE_HOLD   0x00000002
> +#define BM_USBPHY_DEBUG_OTGIDPIOLOCK   0x00000001
> +
> +#define HW_USBPHY_DEBUG0_STATUS        0x00000060
> +
> +#define BP_USBPHY_DEBUG0_STATUS_SQUELCH_COUNT  26
> +#define BM_USBPHY_DEBUG0_STATUS_SQUELCH_COUNT  0xFC000000
> +#define BF_USBPHY_DEBUG0_STATUS_SQUELCH_COUNT(v) \
> +               (((v) << 26) & BM_USBPHY_DEBUG0_STATUS_SQUELCH_COUNT)
> +#define BP_USBPHY_DEBUG0_STATUS_UTMI_RXERROR_FAIL_COUNT        16
> +#define BM_USBPHY_DEBUG0_STATUS_UTMI_RXERROR_FAIL_COUNT        0x03FF0000
> +#define BF_USBPHY_DEBUG0_STATUS_UTMI_RXERROR_FAIL_COUNT(v)  \
> +               (((v) << 16) & BM_USBPHY_DEBUG0_STATUS_UTMI_RXERROR_FAIL_COUNT)
> +#define BP_USBPHY_DEBUG0_STATUS_LOOP_BACK_FAIL_COUNT   0
> +#define BM_USBPHY_DEBUG0_STATUS_LOOP_BACK_FAIL_COUNT   0x0000FFFF
> +#define BF_USBPHY_DEBUG0_STATUS_LOOP_BACK_FAIL_COUNT(v)  \
> +               (((v) << 0) & BM_USBPHY_DEBUG0_STATUS_LOOP_BACK_FAIL_COUNT)
> +
> +#define HW_USBPHY_DEBUG1       0x00000070
> +#define HW_USBPHY_DEBUG1_SET   0x00000074
> +#define HW_USBPHY_DEBUG1_CLR   0x00000078
> +#define HW_USBPHY_DEBUG1_TOG   0x0000007c
> +
> +#define BP_USBPHY_DEBUG1_ENTAILADJVD   13
> +#define BM_USBPHY_DEBUG1_ENTAILADJVD   0x00006000
> +#define BF_USBPHY_DEBUG1_ENTAILADJVD(v)  \
> +               (((v) << 13) & BM_USBPHY_DEBUG1_ENTAILADJVD)
> +#define BM_USBPHY_DEBUG1_ENTX2TX       0x00001000
> +#define BP_USBPHY_DEBUG1_DBG_ADDRESS   0
> +#define BM_USBPHY_DEBUG1_DBG_ADDRESS   0x0000000F
> +#define BF_USBPHY_DEBUG1_DBG_ADDRESS(v)  \
> +               (((v) << 0) & BM_USBPHY_DEBUG1_DBG_ADDRESS)
> +
> +#define HW_USBPHY_VERSION      0x00000080
> +
> +#define BP_USBPHY_VERSION_MAJOR        24
> +#define BM_USBPHY_VERSION_MAJOR        0xFF000000
> +#define BF_USBPHY_VERSION_MAJOR(v) \
> +               (((v) << 24) & BM_USBPHY_VERSION_MAJOR)
> +#define BP_USBPHY_VERSION_MINOR        16
> +#define BM_USBPHY_VERSION_MINOR        0x00FF0000
> +#define BF_USBPHY_VERSION_MINOR(v)  \
> +               (((v) << 16) & BM_USBPHY_VERSION_MINOR)
> +#define BP_USBPHY_VERSION_STEP 0
> +#define BM_USBPHY_VERSION_STEP 0x0000FFFF
> +#define BF_USBPHY_VERSION_STEP(v)  \
> +               (((v) << 0) & BM_USBPHY_VERSION_STEP)
> +
> +#define HW_USBPHY_IP           0x00000090
> +#define HW_USBPHY_IP_SET       0x00000094
> +#define HW_USBPHY_IP_CLR       0x00000098
> +#define HW_USBPHY_IP_TOG       0x0000009c
> +
> +#define BP_USBPHY_IP_DIV_SEL   23
> +#define BM_USBPHY_IP_DIV_SEL   0x01800000
> +#define BF_USBPHY_IP_DIV_SEL(v)  \
> +               (((v) << 23) & BM_USBPHY_IP_DIV_SEL)
> +#define BV_USBPHY_IP_DIV_SEL__DEFAULT   0x0
> +#define BV_USBPHY_IP_DIV_SEL__LOWER     0x1
> +#define BV_USBPHY_IP_DIV_SEL__LOWEST    0x2
> +#define BV_USBPHY_IP_DIV_SEL__UNDEFINED 0x3
> +#define BP_USBPHY_IP_LFR_SEL   21
> +#define BM_USBPHY_IP_LFR_SEL   0x00600000
> +#define BF_USBPHY_IP_LFR_SEL(v)  \
> +               (((v) << 21) & BM_USBPHY_IP_LFR_SEL)
> +#define BV_USBPHY_IP_LFR_SEL__DEFAULT   0x0
> +#define BV_USBPHY_IP_LFR_SEL__TIMES_2   0x1
> +#define BV_USBPHY_IP_LFR_SEL__TIMES_05  0x2
> +#define BV_USBPHY_IP_LFR_SEL__UNDEFINED 0x3
> +#define BP_USBPHY_IP_CP_SEL    19
> +#define BM_USBPHY_IP_CP_SEL    0x00180000
> +#define BF_USBPHY_IP_CP_SEL(v)  \
> +               (((v) << 19) & BM_USBPHY_IP_CP_SEL)
> +#define BV_USBPHY_IP_CP_SEL__DEFAULT   0x0
> +#define BV_USBPHY_IP_CP_SEL__TIMES_2   0x1
> +#define BV_USBPHY_IP_CP_SEL__TIMES_05  0x2
> +#define BV_USBPHY_IP_CP_SEL__UNDEFINED 0x3
> +#define BM_USBPHY_IP_TSTI_TX_DP        0x00040000
> +#define BM_USBPHY_IP_TSTI_TX_DM        0x00020000
> +#define BM_USBPHY_IP_ANALOG_TESTMODE   0x00010000
> +#define BM_USBPHY_IP_EN_USB_CLKS       0x00000004
> +#define BM_USBPHY_IP_PLL_LOCKED        0x00000002
> +#define BM_USBPHY_IP_PLL_POWER 0x00000001
> +#endif /* __ARCH_ARM___USBPHY_H */
> --
> 1.7.0.4
>
>
>
Lin Tony-B19295 - July 26, 2011, 7:12 a.m.
> Hi,

> 

> From what I see in the datasheet of mx23/mx28, phy regs for mx23 and

> mx28 are the same.

> Then it might be better to name the file regs-usbphy-mxs.h instead of

> regs-usbphy-mx28.h.

> 

> Koen

> 

Good idea.

> On Mon, Jul 25, 2011 at 9:01 AM, Tony Lin <tony.lin@freescale.com> wrote:

> > add usb phy register definitions and functions usb host driver will

> > use these callback functions to initialize usb phy and change working

> > mode

> >

> > Signed-off-by: Tony Lin <tony.lin@freescale.com>

> > ---

> >  arch/arm/mach-mxs/Kconfig            |    1 +

> >  arch/arm/mach-mxs/Makefile           |    1 +

> >  arch/arm/mach-mxs/mxs_usb.c          |  286

> > ++++++++++++++++++++++++++++++++++

> >  arch/arm/mach-mxs/regs-usbphy-mx28.h |  240

> > ++++++++++++++++++++++++++++

> >  4 files changed, 528 insertions(+), 0 deletions(-)

> >

> > diff --git a/arch/arm/mach-mxs/Kconfig b/arch/arm/mach-mxs/Kconfig

> > index 4cd0231..1c4264f 100644

> > --- a/arch/arm/mach-mxs/Kconfig

> > +++ b/arch/arm/mach-mxs/Kconfig

> > @@ -49,6 +49,7 @@ config MACH_MX28EVK

> >        select MXS_HAVE_PLATFORM_MXS_MMC

> >        select MXS_HAVE_PLATFORM_MXSFB

> >        select MXS_OCOTP

> > +       select USB_ARCH_HAS_EHCI

> >        help

> >          Include support for MX28EVK platform. This includes specific

> >          configurations for the board and its peripherals.

> > diff --git a/arch/arm/mach-mxs/Makefile b/arch/arm/mach-mxs/Makefile

> > index 6c38262..726c49f 100644

> > --- a/arch/arm/mach-mxs/Makefile

> > +++ b/arch/arm/mach-mxs/Makefile

> > @@ -12,5 +12,6 @@ obj-$(CONFIG_MACH_MX23EVK) += mach-mx23evk.o

> >  obj-$(CONFIG_MACH_MX28EVK) += mach-mx28evk.o

> >  obj-$(CONFIG_MODULE_TX28) += module-tx28.o

> >  obj-$(CONFIG_MACH_TX28)    += mach-tx28.o

> > +obj-$(CONFIG_USB_EHCI_MXC)   += mxs_usb.o

> >

> >  obj-y += devices/

> > diff --git a/arch/arm/mach-mxs/mxs_usb.c b/arch/arm/mach-mxs/mxs_usb.c

> > new file mode 100644 index 0000000..01753ea

> > --- /dev/null

> > +++ b/arch/arm/mach-mxs/mxs_usb.c

> > @@ -0,0 +1,286 @@

> > +/*

> > + * Copyright (C) 2009-2011 Freescale Semiconductor, Inc. All Rights

> Reserved.

> > + *

> > + * This program is free software; you can redistribute it and/or

> > +modify

> > + * it under the terms of the GNU General Public License as published

> > +by

> > + * the Free Software Foundation; either version 2 of the License, or

> > + * (at your option) any later version.

> > + *

> > + * This program is distributed in the hope that it will be useful,

> > + * but WITHOUT ANY WARRANTY; without even the implied warranty of

> > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

> > + * GNU General Public License for more details.

> > + *

> > + * You should have received a copy of the GNU General Public License

> > +along

> > + * with this program; if not, write to the Free Software Foundation,

> > +Inc.,

> > + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

> > + */

> > +

> > +#include <linux/kernel.h>

> > +#include <linux/types.h>

> > +#include <linux/clk.h>

> > +#include <linux/delay.h>

> > +#include <linux/platform_device.h>

> > +#include <linux/io.h>

> > +#include <linux/err.h>

> > +#include <linux/fsl_devices.h>

> > +#include <linux/gpio.h>

> > +#include <asm/mach-types.h>

> > +#include <asm/mach/arch.h>

> > +#include <mach/irqs.h>

> > +#include <mach/mx28.h>

> > +#include "regs-usbphy-mx28.h"

> > +

> > +/* EHCI registers: */

> > +#define UOG_USBCMD             (0x140) /* USB command register */

> > +#define UOG_USBSTS             (0x144) /* USB status register */

> > +#define UOG_PORTSC1            (0x184) /* port status and control */

> > +/* x_PORTSCx */

> > +#define PORTSC_PTS_MASK                (3 << 30) /* parallel xcvr

> > +mask */ #define PORTSC_PTS_UTMI                (0 << 30) /*

> > +UTMI/UTMI+ */ #define PORTSC_PTW             (1 << 28) /* UTMI width

> > +*/

> > +/* USBCMD */

> > +#define UCMD_RUN_STOP           (1 << 0) /* controller run/stop */

> > +#define UCMD_RESET             (1 << 1) /* controller reset */

> > +

> > +#define HOSTPHY_CONNECT_STATE  (1 << 3) #define

> STS_PCD

> > +(1 << 2) /* port change detect */

> > +

> > +struct mxs_usb_private_date {

> > +       struct clk *usb_clk, *usb_phy_clk;

> > +       int internal_phy_clk_already_on;

> > +       void __iomem *phy_regs;         /* usb phy register base */

> > +       void __iomem *ctrl_regs;        /* usb controller register

> > +base */ };

> > +

> > +static inline int fsl_platform_get_usb_connect_status

> > +                       (struct mxs_usb_private_date *ppriv) {

> > +       u32 status;

> > +

> > +       status = __raw_readl(ppriv->phy_regs + HW_USBPHY_STATUS);

> > +

> > +       return ((status & HOSTPHY_CONNECT_STATE) == 0); }

> > +

> > +/* enable/disable high-speed disconnect detector of phy ctrl */

> > +static inline void fsl_platform_disconnect_detect

> > +                       (struct mxs_usb_private_date *ppriv, int

> > +enable) {

> > +       if (enable) {

> > +               __raw_writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,

> > +               ppriv->phy_regs + HW_USBPHY_CTRL_SET);

> > +       } else {

> > +               __raw_writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,

> > +               ppriv->phy_regs + HW_USBPHY_CTRL_CLR);

> > +       }

> > +}

> > +

> > +static void fsl_plt_usbh_irq_handler(struct mxc_usbh_platform_data

> > +*pdata) {

> > +       u32                     status;

> > +       struct mxs_usb_private_date *ppriv = pdata->ppriv;

> > +

> > +       status = __raw_readl(ppriv->ctrl_regs + UOG_USBSTS);

> > +

> > +       if (status & STS_PCD)

> > +               fsl_platform_disconnect_detect(ppriv,

> > +                       fsl_platform_get_usb_connect_status(ppriv));

> > +}

> > +

> > +static int usb_phy_enable(struct mxc_usbh_platform_data *pdata) {

> > +       u32 tmp;

> > +       u32 i = 0;

> > +       struct mxs_usb_private_date *ppriv = pdata->ppriv;

> > +       void __iomem *usbcmd, *phy_ctrl, *portsc;

> > +

> > +       /* Reset USB IP */

> > +       /* Set run stop bit */

> > +       /* Send reset command */

> > +       usbcmd = ppriv->ctrl_regs + UOG_USBCMD;

> > +       tmp = __raw_readl(usbcmd); /* usb command */

> > +       tmp &= ~UCMD_RUN_STOP;

> > +       __raw_writel(tmp, usbcmd);

> > +       while (__raw_readl(usbcmd) & UCMD_RUN_STOP) {

> > +               i++;

> > +               if (i == 1000)

> > +                       break;

> > +               mdelay(1);

> > +       }

> > +       tmp |= UCMD_RESET;

> > +       __raw_writel(tmp, usbcmd);

> > +       i = 0;

> > +       while (__raw_readl(usbcmd) & UCMD_RESET) {

> > +               i++;

> > +               if (i == 1000)

> > +                       break;

> > +               mdelay(1);

> > +       }

> > +       mdelay(10);

> > +

> > +       /* Reset USBPHY module, set soft reset bit */

> > +       phy_ctrl = ppriv->phy_regs + HW_USBPHY_CTRL;

> > +       tmp = __raw_readl(phy_ctrl);

> > +       tmp |= BM_USBPHY_CTRL_SFTRST;

> > +       __raw_writel(tmp, phy_ctrl);

> > +       udelay(10);

> > +

> > +       /* clear CLKGATE and SFTRST bits to be out of reset mode*/

> > +       tmp = __raw_readl(phy_ctrl);

> > +       tmp &= ~(BM_USBPHY_CTRL_CLKGATE | BM_USBPHY_CTRL_SFTRST);

> > +       __raw_writel(tmp, phy_ctrl);

> > +       udelay(10);

> > +

> > +       /* set UTMI xcvr */

> > +       /* Workaround an IC issue for ehci driver:

> > +        * when turn off root hub port power, EHCI set

> > +        * PORTSC reserved bits to be 0, but PTW with 0

> > +        * means 8 bits tranceiver width, here change

> > +        * it back to be 16 bits and do PHY diable and

> > +        * then enable.

> > +        */

> > +       portsc = ppriv->ctrl_regs + UOG_PORTSC1;

> > +       tmp = __raw_readl(portsc);

> > +       tmp &=  ~PORTSC_PTS_MASK;

> > +       tmp |= (PORTSC_PTS_UTMI | PORTSC_PTW);

> > +       __raw_writel(tmp, portsc);

> > +

> > +       /* Power up the PHY */

> > +       __raw_writel(0, ppriv->phy_regs + HW_USBPHY_PWD);

> > +       return 0;

> > +}

> > +

> > +static int fsl_usbh_init(struct platform_device *pdev) {

> > +       struct mxc_usbh_platform_data *pdata =

> > +pdev->dev.platform_data;

> > +       struct mxs_usb_private_date *ppriv = pdata->ppriv;

> > +       u32 tmp;

> > +

> > +       usb_phy_enable(pdata);

> > +       /* enable FS/LS device */

> > +       tmp = __raw_readl(ppriv->phy_regs + HW_USBPHY_CTRL);

> > +       tmp |= (BM_USBPHY_CTRL_ENUTMILEVEL2 |

> > + BM_USBPHY_CTRL_ENUTMILEVEL3);

> > +       __raw_writel(tmp, ppriv->phy_regs + HW_USBPHY_CTRL);

> > +

> > +       return 0;

> > +}

> > +

> > +static void phy_clock_gate(struct mxs_usb_private_date *ppriv, bool

> > +on) {

> > +       u32 tmp;

> > +

> > +       if (on) {

> > +               ppriv->internal_phy_clk_already_on += 1;

> > +               if (ppriv->internal_phy_clk_already_on == 1) {

> > +                       tmp = BM_USBPHY_CTRL_SFTRST |

> > +BM_USBPHY_CTRL_CLKGATE;

> > +                       __raw_writel(tmp, ppriv->phy_regs +

> > +HW_USBPHY_CTRL_CLR);

> > +               }

> > +       } else {

> > +               ppriv->internal_phy_clk_already_on -= 1;

> > +               if (ppriv->internal_phy_clk_already_on == 0) {

> > +                       tmp = BM_USBPHY_CTRL_CLKGATE;

> > +                       __raw_writel(tmp, ppriv->phy_regs +

> > +HW_USBPHY_CTRL_SET);

> > +               }

> > +       }

> > +       if (WARN_ON(ppriv->internal_phy_clk_already_on < 0))

> > +               printk(KERN_ERR "please check phy clock ON/OFF

> > +sequence\n"); } static int fsl_usb_host_init(struct platform_device

> > +*pdev) {

> > +       struct mxc_usbh_platform_data *pdata =

> > +pdev->dev.platform_data;

> > +       struct mxs_usb_private_date *ppriv = pdata->ppriv;

> > +

> > +       ppriv->phy_regs = ioremap(MX28_USBPHY1_BASE_ADDR, SZ_8K);

> > +       if (ppriv->phy_regs == NULL)

> > +               return -ENOMEM;

> > +

> > +       ppriv->ctrl_regs = ioremap(MX28_USBCTRL1_BASE_ADDR, SZ_8K);

> > +       if (ppriv->ctrl_regs == NULL)

> > +               return -ENOMEM;

> > +

> > +       ppriv->usb_clk = clk_get(&pdev->dev, "usb1");

> > +       if (IS_ERR(ppriv->usb_clk))

> > +               return PTR_ERR(ppriv->usb_clk);

> > +       clk_enable(ppriv->usb_clk);

> > +

> > +       ppriv->usb_phy_clk = clk_get(&pdev->dev, "usb1_phy");

> > +       if (IS_ERR(ppriv->usb_phy_clk))

> > +               return PTR_ERR(ppriv->usb_phy_clk);

> > +       clk_enable(ppriv->usb_phy_clk);

> > +

> > +       phy_clock_gate(ppriv, true);

> > +       return fsl_usbh_init(pdev);

> > +}

> > +

> > +static int fsl_usb_host_uninit(struct platform_device *pdev) {

> > +       struct mxc_usbh_platform_data *pdata =

> > +pdev->dev.platform_data;

> > +       struct mxs_usb_private_date *ppriv = pdata->ppriv;

> > +

> > +       phy_clock_gate(ppriv, false);

> > +       if (ppriv->usb_phy_clk) {

> > +               clk_disable(ppriv->usb_phy_clk);

> > +               clk_put(ppriv->usb_phy_clk);

> > +       }

> > +       if (ppriv->usb_clk) {

> > +               clk_disable(ppriv->usb_clk);

> > +               clk_put(ppriv->usb_clk);

> > +       }

> > +       if (ppriv->phy_regs)

> > +               iounmap(ppriv->phy_regs);

> > +       if (ppriv->ctrl_regs)

> > +               iounmap(ppriv->ctrl_regs);

> > +

> > +       return 0;

> > +}

> > +

> > +static struct mxs_usb_private_date usbh_private = {

> > +       .internal_phy_clk_already_on = 0, };

> > +

> > +static struct mxc_usbh_platform_data usbh_config = {

> > +       .init = fsl_usb_host_init,

> > +       .exit = fsl_usb_host_uninit,

> > +       .portsc = MXC_EHCI_MODE_ULPI,

> > +       .otg = NULL,

> > +       .plt_irq_handler = fsl_plt_usbh_irq_handler,

> > +       .ppriv = &usbh_private,

> > +};

> > +

> > +/* The resources for kinds of usb devices */ static struct resource

> > +usbh_resources[] = {

> > +       {

> > +               .start = MX28_USBCTRL1_BASE_ADDR,

> > +               .end = MX28_USBCTRL1_BASE_ADDR + 0x1ff,

> > +               .flags = IORESOURCE_MEM,

> > +       },

> > +       {

> > +               .start = MX28_INT_USB1,

> > +               .flags = IORESOURCE_IRQ,

> > +       },

> > +};

> > +

> > +static int __init usbh_init(void)

> > +{

> > +       struct platform_device *pdev;

> > +       int instance_id = ~(u32) 0;

> > +       u64 ehci_dmamask = ~(u32) 0;

> > +

> > +       if (!cpu_is_mx28())

> > +               return 0;

> > +

> > +       pdev = platform_device_register_resndata(NULL, "mxc-ehci",

> > + instance_id,

> > +                       usbh_resources, ARRAY_SIZE(usbh_resources),

> > +                       &usbh_config, sizeof(struct

> > + mxc_usbh_platform_data));

> > +       if (IS_ERR(pdev)) {

> > +               pr_debug("can't register Host, %ld\n", PTR_ERR(pdev));

> > +               return PTR_ERR(pdev);

> > +       }

> > +

> > +       pdev->dev.coherent_dma_mask = 0xffffffff;

> > +       pdev->dev.dma_mask = &ehci_dmamask;

> > +

> > +       return 0;

> > +}

> > +module_init(usbh_init);

> > diff --git a/arch/arm/mach-mxs/regs-usbphy-mx28.h

> > b/arch/arm/mach-mxs/regs-usbphy-mx28.h

> > new file mode 100644

> > index 0000000..2ec273b

> > --- /dev/null

> > +++ b/arch/arm/mach-mxs/regs-usbphy-mx28.h

> > @@ -0,0 +1,240 @@

> > +/*

> > + * Freescale USBPHY Register Definitions

> > + *

> > + * Copyright 2008-2011 Freescale Semiconductor, Inc. All Rights

> Reserved.

> > + *

> > + * This program is free software; you can redistribute it and/or

> > +modify

> > + * it under the terms of the GNU General Public License as published

> > +by

> > + * the Free Software Foundation; either version 2 of the License, or

> > + * (at your option) any later version.

> > + *

> > + * This program is distributed in the hope that it will be useful,

> > + * but WITHOUT ANY WARRANTY; without even the implied warranty of

> > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

> > + * GNU General Public License for more details.

> > + *

> > + * You should have received a copy of the GNU General Public License

> > + * along with this program; if not, write to the Free Software

> > + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA

> > +02111-1307 USA

> > + *

> > + *

> > + * Xml Revision: 1.52

> > + * Template revision: 26195

> > + */

> > +

> > +#ifndef __ARCH_ARM___USBPHY_H

> > +#define __ARCH_ARM___USBPHY_H

> > +

> > +

> > +#define HW_USBPHY_PWD          0x00000000 #define

> HW_USBPHY_PWD_SET

> > +0x00000004 #define HW_USBPHY_PWD_CLR      0x00000008 #define

> > +HW_USBPHY_PWD_TOG      0x0000000c

> > +

> > +#define BM_USBPHY_PWD_RXPWDRX  0x00100000 #define

> > +BM_USBPHY_PWD_RXPWDDIFF        0x00080000 #define

> > +BM_USBPHY_PWD_RXPWD1PT1        0x00040000 #define

> > +BM_USBPHY_PWD_RXPWDENV 0x00020000

> > +

> > +#define BM_USBPHY_PWD_TXPWDV2I 0x00001000 #define

> > +BM_USBPHY_PWD_TXPWDIBIAS       0x00000800 #define

> > +BM_USBPHY_PWD_TXPWDFS  0x00000400

> > +

> > +#define HW_USBPHY_TX           0x00000010 #define

> HW_USBPHY_TX_SET

> > +0x00000014 #define HW_USBPHY_TX_CLR       0x00000018 #define

> > +HW_USBPHY_TX_TOG       0x0000001c

> > +

> > +#define BP_USBPHY_TX_USBPHY_TX_EDGECTRL        26 #define

> > +BM_USBPHY_TX_USBPHY_TX_EDGECTRL        0x1C000000 #define

> > +BF_USBPHY_TX_USBPHY_TX_EDGECTRL(v)  \

> > +               (((v) << 26) & BM_USBPHY_TX_USBPHY_TX_EDGECTRL)

> > +#define BM_USBPHY_TX_USBPHY_TX_SYNC_INVERT     0x02000000 #define

> > +BM_USBPHY_TX_USBPHY_TX_SYNC_MUX        0x01000000

> > +

> > +#define BM_USBPHY_TX_TXENCAL45DP       0x00200000 #define

> > +BP_USBPHY_TX_TXCAL45DP 16 #define BM_USBPHY_TX_TXCAL45DP 0x000F0000

> > +#define BF_USBPHY_TX_TXCAL45DP(v)  \

> > +               (((v) << 16) & BM_USBPHY_TX_TXCAL45DP) #define

> > +BM_USBPHY_TX_TXENCAL45DN       0x00002000 #define

> > +BP_USBPHY_TX_TXCAL45DN 8 #define BM_USBPHY_TX_TXCAL45DN 0x00000F00

> > +#define BF_USBPHY_TX_TXCAL45DN(v)  \

> > +               (((v) << 8) & BM_USBPHY_TX_TXCAL45DN)

> > +

> > +#define BP_USBPHY_TX_D_CAL     0

> > +#define BM_USBPHY_TX_D_CAL     0x0000000F #define

> > +BF_USBPHY_TX_D_CAL(v)  \

> > +               (((v) << 0) & BM_USBPHY_TX_D_CAL)

> > +

> > +#define HW_USBPHY_RX           0x00000020 #define

> HW_USBPHY_RX_SET

> > +0x00000024 #define HW_USBPHY_RX_CLR       0x00000028 #define

> > +HW_USBPHY_RX_TOG       0x0000002c

> > +

> > +#define BM_USBPHY_RX_RXDBYPASS 0x00400000 #define

> > +BP_USBPHY_RX_DISCONADJ 4 #define BM_USBPHY_RX_DISCONADJ 0x00000070

> > +#define BF_USBPHY_RX_DISCONADJ(v)  \

> > +               (((v) << 4) & BM_USBPHY_RX_DISCONADJ) #define

> > +BP_USBPHY_RX_ENVADJ    0 #define BM_USBPHY_RX_ENVADJ    0x00000007

> > +#define BF_USBPHY_RX_ENVADJ(v)  \

> > +               (((v) << 0) & BM_USBPHY_RX_ENVADJ)

> > +

> > +#define HW_USBPHY_CTRL         0x00000030 #define

> HW_USBPHY_CTRL_SET

> > +0x00000034 #define HW_USBPHY_CTRL_CLR     0x00000038 #define

> > +HW_USBPHY_CTRL_TOG     0x0000003c

> > +

> > +#define BM_USBPHY_CTRL_SFTRST  0x80000000 #define

> > +BM_USBPHY_CTRL_CLKGATE 0x40000000 #define

> > +BM_USBPHY_CTRL_UTMI_SUSPENDM   0x20000000 #define

> > +BM_USBPHY_CTRL_HOST_FORCE_LS_SE0       0x10000000 #define

> > +BM_USBPHY_CTRL_ENAUTOSET_USBCLKS       0x04000000 #define

> > +BM_USBPHY_CTRL_ENAUTOCLR_USBCLKGATE    0x02000000 #define

> > +BM_USBPHY_CTRL_FSDLL_RST_EN    0x01000000 #define

> > +BM_USBPHY_CTRL_ENVBUSCHG_WKUP  0x00800000 #define

> > +BM_USBPHY_CTRL_ENIDCHG_WKUP    0x00400000 #define

> > +BM_USBPHY_CTRL_ENDPDMCHG_WKUP  0x00200000 #define

> > +BM_USBPHY_CTRL_ENAUTOCLR_PHY_PWD       0x00100000 #define

> > +BM_USBPHY_CTRL_ENAUTOCLR_CLKGATE       0x00080000 #define

> > +BM_USBPHY_CTRL_ENAUTO_PWRON_PLL        0x00040000 #define

> > +BM_USBPHY_CTRL_WAKEUP_IRQ      0x00020000 #define

> > +BM_USBPHY_CTRL_ENIRQWAKEUP     0x00010000 #define

> > +BM_USBPHY_CTRL_ENUTMILEVEL3    0x00008000 #define

> > +BM_USBPHY_CTRL_ENUTMILEVEL2    0x00004000 #define

> > +BM_USBPHY_CTRL_DATA_ON_LRADC   0x00002000 #define

> > +BM_USBPHY_CTRL_DEVPLUGIN_IRQ   0x00001000 #define

> > +BM_USBPHY_CTRL_ENIRQDEVPLUGIN  0x00000800 #define

> > +BM_USBPHY_CTRL_RESUME_IRQ      0x00000400 #define

> > +BM_USBPHY_CTRL_ENIRQRESUMEDETECT       0x00000200 #define

> > +BM_USBPHY_CTRL_RESUMEIRQSTICKY 0x00000100 #define

> > +BM_USBPHY_CTRL_ENOTGIDDETECT   0x00000080 #define

> > +BM_USBPHY_CTRL_DEVPLUGIN_POLARITY      0x00000020 #define

> > +BM_USBPHY_CTRL_ENDEVPLUGINDETECT       0x00000010 #define

> > +BM_USBPHY_CTRL_HOSTDISCONDETECT_IRQ    0x00000008 #define

> > +BM_USBPHY_CTRL_ENIRQHOSTDISCON 0x00000004 #define

> > +BM_USBPHY_CTRL_ENHOSTDISCONDETECT      0x00000002

> > +

> > +#define HW_USBPHY_STATUS       0x00000040

> > +

> > +#define BM_USBPHY_STATUS_RESUME_STATUS 0x00000400 #define

> > +BM_USBPHY_STATUS_OTGID_STATUS  0x00000100 #define

> > +BM_USBPHY_STATUS_DEVPLUGIN_STATUS      0x00000040 #define

> > +BM_USBPHY_STATUS_HOSTDISCONDETECT_STATUS       0x00000008

> > +

> > +#define HW_USBPHY_DEBUG                0x00000050 #define

> > +HW_USBPHY_DEBUG_SET    0x00000054 #define HW_USBPHY_DEBUG_CLR

> > +0x00000058 #define HW_USBPHY_DEBUG_TOG    0x0000005c

> > +

> > +#define BM_USBPHY_DEBUG_CLKGATE        0x40000000 #define

> > +BM_USBPHY_DEBUG_HOST_RESUME_DEBUG      0x20000000 #define

> > +BP_USBPHY_DEBUG_SQUELCHRESETLENGTH     25 #define

> > +BM_USBPHY_DEBUG_SQUELCHRESETLENGTH     0x1E000000 #define

> > +BF_USBPHY_DEBUG_SQUELCHRESETLENGTH(v)  \

> > +               (((v) << 25) & BM_USBPHY_DEBUG_SQUELCHRESETLENGTH)

> > +#define BM_USBPHY_DEBUG_ENSQUELCHRESET 0x01000000 #define

> > +BP_USBPHY_DEBUG_SQUELCHRESETCOUNT      16 #define

> > +BM_USBPHY_DEBUG_SQUELCHRESETCOUNT      0x001F0000 #define

> > +BF_USBPHY_DEBUG_SQUELCHRESETCOUNT(v)  \

> > +               (((v) << 16) & BM_USBPHY_DEBUG_SQUELCHRESETCOUNT)

> > +#define BM_USBPHY_DEBUG_ENTX2RXCOUNT   0x00001000 #define

> > +BP_USBPHY_DEBUG_TX2RXCOUNT     8 #define

> BM_USBPHY_DEBUG_TX2RXCOUNT

> > +0x00000F00 #define BF_USBPHY_DEBUG_TX2RXCOUNT(v)  \

> > +               (((v) << 8) & BM_USBPHY_DEBUG_TX2RXCOUNT) #define

> > +BP_USBPHY_DEBUG_ENHSTPULLDOWN  4 #define

> > +BM_USBPHY_DEBUG_ENHSTPULLDOWN  0x00000030 #define

> > +BF_USBPHY_DEBUG_ENHSTPULLDOWN(v)  \

> > +               (((v) << 4) & BM_USBPHY_DEBUG_ENHSTPULLDOWN) #define

> > +BP_USBPHY_DEBUG_HSTPULLDOWN    2 #define

> BM_USBPHY_DEBUG_HSTPULLDOWN

> > +0x0000000C #define BF_USBPHY_DEBUG_HSTPULLDOWN(v)  \

> > +               (((v) << 2) & BM_USBPHY_DEBUG_HSTPULLDOWN) #define

> > +BM_USBPHY_DEBUG_DEBUG_INTERFACE_HOLD   0x00000002 #define

> > +BM_USBPHY_DEBUG_OTGIDPIOLOCK   0x00000001

> > +

> > +#define HW_USBPHY_DEBUG0_STATUS        0x00000060

> > +

> > +#define BP_USBPHY_DEBUG0_STATUS_SQUELCH_COUNT  26 #define

> > +BM_USBPHY_DEBUG0_STATUS_SQUELCH_COUNT  0xFC000000 #define

> > +BF_USBPHY_DEBUG0_STATUS_SQUELCH_COUNT(v) \

> > +               (((v) << 26) & BM_USBPHY_DEBUG0_STATUS_SQUELCH_COUNT)

> > +#define BP_USBPHY_DEBUG0_STATUS_UTMI_RXERROR_FAIL_COUNT        16

> > +#define BM_USBPHY_DEBUG0_STATUS_UTMI_RXERROR_FAIL_COUNT

> > +0x03FF0000 #define

> BF_USBPHY_DEBUG0_STATUS_UTMI_RXERROR_FAIL_COUNT(v)

> > +\

> > +               (((v) << 16) &

> > +BM_USBPHY_DEBUG0_STATUS_UTMI_RXERROR_FAIL_COUNT)

> > +#define BP_USBPHY_DEBUG0_STATUS_LOOP_BACK_FAIL_COUNT   0 #define

> > +BM_USBPHY_DEBUG0_STATUS_LOOP_BACK_FAIL_COUNT   0x0000FFFF #define

> > +BF_USBPHY_DEBUG0_STATUS_LOOP_BACK_FAIL_COUNT(v)  \

> > +               (((v) << 0) &

> > +BM_USBPHY_DEBUG0_STATUS_LOOP_BACK_FAIL_COUNT)

> > +

> > +#define HW_USBPHY_DEBUG1       0x00000070 #define

> > +HW_USBPHY_DEBUG1_SET   0x00000074 #define HW_USBPHY_DEBUG1_CLR

> > +0x00000078 #define HW_USBPHY_DEBUG1_TOG   0x0000007c

> > +

> > +#define BP_USBPHY_DEBUG1_ENTAILADJVD   13 #define

> > +BM_USBPHY_DEBUG1_ENTAILADJVD   0x00006000 #define

> > +BF_USBPHY_DEBUG1_ENTAILADJVD(v)  \

> > +               (((v) << 13) & BM_USBPHY_DEBUG1_ENTAILADJVD) #define

> > +BM_USBPHY_DEBUG1_ENTX2TX       0x00001000 #define

> > +BP_USBPHY_DEBUG1_DBG_ADDRESS   0 #define

> BM_USBPHY_DEBUG1_DBG_ADDRESS

> > +0x0000000F #define BF_USBPHY_DEBUG1_DBG_ADDRESS(v)  \

> > +               (((v) << 0) & BM_USBPHY_DEBUG1_DBG_ADDRESS)

> > +

> > +#define HW_USBPHY_VERSION      0x00000080

> > +

> > +#define BP_USBPHY_VERSION_MAJOR        24 #define

> > +BM_USBPHY_VERSION_MAJOR        0xFF000000 #define

> > +BF_USBPHY_VERSION_MAJOR(v) \

> > +               (((v) << 24) & BM_USBPHY_VERSION_MAJOR) #define

> > +BP_USBPHY_VERSION_MINOR        16 #define

> BM_USBPHY_VERSION_MINOR

> > +0x00FF0000 #define BF_USBPHY_VERSION_MINOR(v)  \

> > +               (((v) << 16) & BM_USBPHY_VERSION_MINOR) #define

> > +BP_USBPHY_VERSION_STEP 0 #define BM_USBPHY_VERSION_STEP 0x0000FFFF

> > +#define BF_USBPHY_VERSION_STEP(v)  \

> > +               (((v) << 0) & BM_USBPHY_VERSION_STEP)

> > +

> > +#define HW_USBPHY_IP           0x00000090 #define

> HW_USBPHY_IP_SET

> > +0x00000094 #define HW_USBPHY_IP_CLR       0x00000098 #define

> > +HW_USBPHY_IP_TOG       0x0000009c

> > +

> > +#define BP_USBPHY_IP_DIV_SEL   23

> > +#define BM_USBPHY_IP_DIV_SEL   0x01800000 #define

> > +BF_USBPHY_IP_DIV_SEL(v)  \

> > +               (((v) << 23) & BM_USBPHY_IP_DIV_SEL) #define

> > +BV_USBPHY_IP_DIV_SEL__DEFAULT   0x0 #define

> > +BV_USBPHY_IP_DIV_SEL__LOWER     0x1 #define

> > +BV_USBPHY_IP_DIV_SEL__LOWEST    0x2 #define

> > +BV_USBPHY_IP_DIV_SEL__UNDEFINED 0x3 #define BP_USBPHY_IP_LFR_SEL   21

> > +#define BM_USBPHY_IP_LFR_SEL   0x00600000 #define

> > +BF_USBPHY_IP_LFR_SEL(v)  \

> > +               (((v) << 21) & BM_USBPHY_IP_LFR_SEL) #define

> > +BV_USBPHY_IP_LFR_SEL__DEFAULT   0x0 #define

> > +BV_USBPHY_IP_LFR_SEL__TIMES_2   0x1 #define

> > +BV_USBPHY_IP_LFR_SEL__TIMES_05  0x2 #define

> > +BV_USBPHY_IP_LFR_SEL__UNDEFINED 0x3 #define BP_USBPHY_IP_CP_SEL    19

> > +#define BM_USBPHY_IP_CP_SEL    0x00180000 #define

> > +BF_USBPHY_IP_CP_SEL(v)  \

> > +               (((v) << 19) & BM_USBPHY_IP_CP_SEL) #define

> > +BV_USBPHY_IP_CP_SEL__DEFAULT   0x0 #define

> > +BV_USBPHY_IP_CP_SEL__TIMES_2   0x1 #define

> > +BV_USBPHY_IP_CP_SEL__TIMES_05  0x2 #define

> > +BV_USBPHY_IP_CP_SEL__UNDEFINED 0x3 #define

> BM_USBPHY_IP_TSTI_TX_DP

> > +0x00040000 #define BM_USBPHY_IP_TSTI_TX_DM        0x00020000 #define

> > +BM_USBPHY_IP_ANALOG_TESTMODE   0x00010000 #define

> > +BM_USBPHY_IP_EN_USB_CLKS       0x00000004 #define

> > +BM_USBPHY_IP_PLL_LOCKED        0x00000002 #define

> > +BM_USBPHY_IP_PLL_POWER 0x00000001 #endif /* __ARCH_ARM___USBPHY_H */

> > --

> > 1.7.0.4

> >

> >

> >

Patch

diff --git a/arch/arm/mach-mxs/Kconfig b/arch/arm/mach-mxs/Kconfig
index 4cd0231..1c4264f 100644
--- a/arch/arm/mach-mxs/Kconfig
+++ b/arch/arm/mach-mxs/Kconfig
@@ -49,6 +49,7 @@  config MACH_MX28EVK
 	select MXS_HAVE_PLATFORM_MXS_MMC
 	select MXS_HAVE_PLATFORM_MXSFB
 	select MXS_OCOTP
+	select USB_ARCH_HAS_EHCI
 	help
 	  Include support for MX28EVK platform. This includes specific
 	  configurations for the board and its peripherals.
diff --git a/arch/arm/mach-mxs/Makefile b/arch/arm/mach-mxs/Makefile
index 6c38262..726c49f 100644
--- a/arch/arm/mach-mxs/Makefile
+++ b/arch/arm/mach-mxs/Makefile
@@ -12,5 +12,6 @@  obj-$(CONFIG_MACH_MX23EVK) += mach-mx23evk.o
 obj-$(CONFIG_MACH_MX28EVK) += mach-mx28evk.o
 obj-$(CONFIG_MODULE_TX28) += module-tx28.o
 obj-$(CONFIG_MACH_TX28)    += mach-tx28.o
+obj-$(CONFIG_USB_EHCI_MXC)   += mxs_usb.o
 
 obj-y += devices/
diff --git a/arch/arm/mach-mxs/mxs_usb.c b/arch/arm/mach-mxs/mxs_usb.c
new file mode 100644
index 0000000..01753ea
--- /dev/null
+++ b/arch/arm/mach-mxs/mxs_usb.c
@@ -0,0 +1,286 @@ 
+/*
+ * Copyright (C) 2009-2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/err.h>
+#include <linux/fsl_devices.h>
+#include <linux/gpio.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <mach/irqs.h>
+#include <mach/mx28.h>
+#include "regs-usbphy-mx28.h"
+
+/* EHCI registers: */
+#define UOG_USBCMD		(0x140) /* USB command register */
+#define UOG_USBSTS		(0x144) /* USB status register */
+#define UOG_PORTSC1		(0x184) /* port status and control */
+/* x_PORTSCx */
+#define PORTSC_PTS_MASK		(3 << 30) /* parallel xcvr mask */
+#define PORTSC_PTS_UTMI		(0 << 30) /* UTMI/UTMI+ */
+#define PORTSC_PTW		(1 << 28) /* UTMI width */
+/* USBCMD */
+#define UCMD_RUN_STOP           (1 << 0) /* controller run/stop */
+#define UCMD_RESET		(1 << 1) /* controller reset */
+
+#define HOSTPHY_CONNECT_STATE	(1 << 3)
+#define STS_PCD			(1 << 2) /* port change detect */
+
+struct mxs_usb_private_date {
+	struct clk *usb_clk, *usb_phy_clk;
+	int internal_phy_clk_already_on;
+	void __iomem *phy_regs;		/* usb phy register base */
+	void __iomem *ctrl_regs;	/* usb controller register base */
+};
+
+static inline int fsl_platform_get_usb_connect_status
+			(struct mxs_usb_private_date *ppriv)
+{
+	u32 status;
+
+	status = __raw_readl(ppriv->phy_regs + HW_USBPHY_STATUS);
+
+	return ((status & HOSTPHY_CONNECT_STATE) == 0);
+}
+
+/* enable/disable high-speed disconnect detector of phy ctrl */
+static inline void fsl_platform_disconnect_detect
+			(struct mxs_usb_private_date *ppriv, int enable)
+{
+	if (enable) {
+		__raw_writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
+		ppriv->phy_regs + HW_USBPHY_CTRL_SET);
+	} else {
+		__raw_writel(BM_USBPHY_CTRL_ENHOSTDISCONDETECT,
+		ppriv->phy_regs + HW_USBPHY_CTRL_CLR);
+	}
+}
+
+static void fsl_plt_usbh_irq_handler(struct mxc_usbh_platform_data *pdata)
+{
+	u32			status;
+	struct mxs_usb_private_date *ppriv = pdata->ppriv;
+
+	status = __raw_readl(ppriv->ctrl_regs + UOG_USBSTS);
+
+	if (status & STS_PCD)
+		fsl_platform_disconnect_detect(ppriv,
+			fsl_platform_get_usb_connect_status(ppriv));
+}
+
+static int usb_phy_enable(struct mxc_usbh_platform_data *pdata)
+{
+	u32 tmp;
+	u32 i = 0;
+	struct mxs_usb_private_date *ppriv = pdata->ppriv;
+	void __iomem *usbcmd, *phy_ctrl, *portsc;
+
+	/* Reset USB IP */
+	/* Set run stop bit */
+	/* Send reset command */
+	usbcmd = ppriv->ctrl_regs + UOG_USBCMD;
+	tmp = __raw_readl(usbcmd); /* usb command */
+	tmp &= ~UCMD_RUN_STOP;
+	__raw_writel(tmp, usbcmd);
+	while (__raw_readl(usbcmd) & UCMD_RUN_STOP) {
+		i++;
+		if (i == 1000)
+			break;
+		mdelay(1);
+	}
+	tmp |= UCMD_RESET;
+	__raw_writel(tmp, usbcmd);
+	i = 0;
+	while (__raw_readl(usbcmd) & UCMD_RESET) {
+		i++;
+		if (i == 1000)
+			break;
+		mdelay(1);
+	}
+	mdelay(10);
+
+	/* Reset USBPHY module, set soft reset bit */
+	phy_ctrl = ppriv->phy_regs + HW_USBPHY_CTRL;
+	tmp = __raw_readl(phy_ctrl);
+	tmp |= BM_USBPHY_CTRL_SFTRST;
+	__raw_writel(tmp, phy_ctrl);
+	udelay(10);
+
+	/* clear CLKGATE and SFTRST bits to be out of reset mode*/
+	tmp = __raw_readl(phy_ctrl);
+	tmp &= ~(BM_USBPHY_CTRL_CLKGATE | BM_USBPHY_CTRL_SFTRST);
+	__raw_writel(tmp, phy_ctrl);
+	udelay(10);
+
+	/* set UTMI xcvr */
+	/* Workaround an IC issue for ehci driver:
+	 * when turn off root hub port power, EHCI set
+	 * PORTSC reserved bits to be 0, but PTW with 0
+	 * means 8 bits tranceiver width, here change
+	 * it back to be 16 bits and do PHY diable and
+	 * then enable.
+	 */
+	portsc = ppriv->ctrl_regs + UOG_PORTSC1;
+	tmp = __raw_readl(portsc);
+	tmp &=  ~PORTSC_PTS_MASK;
+	tmp |= (PORTSC_PTS_UTMI | PORTSC_PTW);
+	__raw_writel(tmp, portsc);
+
+	/* Power up the PHY */
+	__raw_writel(0, ppriv->phy_regs + HW_USBPHY_PWD);
+	return 0;
+}
+
+static int fsl_usbh_init(struct platform_device *pdev)
+{
+	struct mxc_usbh_platform_data *pdata = pdev->dev.platform_data;
+	struct mxs_usb_private_date *ppriv = pdata->ppriv;
+	u32 tmp;
+
+	usb_phy_enable(pdata);
+	/* enable FS/LS device */
+	tmp = __raw_readl(ppriv->phy_regs + HW_USBPHY_CTRL);
+	tmp |= (BM_USBPHY_CTRL_ENUTMILEVEL2 | BM_USBPHY_CTRL_ENUTMILEVEL3);
+	__raw_writel(tmp, ppriv->phy_regs + HW_USBPHY_CTRL);
+
+	return 0;
+}
+
+static void phy_clock_gate(struct mxs_usb_private_date *ppriv, bool on)
+{
+	u32 tmp;
+
+	if (on) {
+		ppriv->internal_phy_clk_already_on += 1;
+		if (ppriv->internal_phy_clk_already_on == 1) {
+			tmp = BM_USBPHY_CTRL_SFTRST | BM_USBPHY_CTRL_CLKGATE;
+			__raw_writel(tmp, ppriv->phy_regs + HW_USBPHY_CTRL_CLR);
+		}
+	} else {
+		ppriv->internal_phy_clk_already_on -= 1;
+		if (ppriv->internal_phy_clk_already_on == 0) {
+			tmp = BM_USBPHY_CTRL_CLKGATE;
+			__raw_writel(tmp, ppriv->phy_regs + HW_USBPHY_CTRL_SET);
+		}
+	}
+	if (WARN_ON(ppriv->internal_phy_clk_already_on < 0))
+		printk(KERN_ERR "please check phy clock ON/OFF sequence\n");
+}
+static int fsl_usb_host_init(struct platform_device *pdev)
+{
+	struct mxc_usbh_platform_data *pdata = pdev->dev.platform_data;
+	struct mxs_usb_private_date *ppriv = pdata->ppriv;
+
+	ppriv->phy_regs = ioremap(MX28_USBPHY1_BASE_ADDR, SZ_8K);
+	if (ppriv->phy_regs == NULL)
+		return -ENOMEM;
+
+	ppriv->ctrl_regs = ioremap(MX28_USBCTRL1_BASE_ADDR, SZ_8K);
+	if (ppriv->ctrl_regs == NULL)
+		return -ENOMEM;
+
+	ppriv->usb_clk = clk_get(&pdev->dev, "usb1");
+	if (IS_ERR(ppriv->usb_clk))
+		return PTR_ERR(ppriv->usb_clk);
+	clk_enable(ppriv->usb_clk);
+
+	ppriv->usb_phy_clk = clk_get(&pdev->dev, "usb1_phy");
+	if (IS_ERR(ppriv->usb_phy_clk))
+		return PTR_ERR(ppriv->usb_phy_clk);
+	clk_enable(ppriv->usb_phy_clk);
+
+	phy_clock_gate(ppriv, true);
+	return fsl_usbh_init(pdev);
+}
+
+static int fsl_usb_host_uninit(struct platform_device *pdev)
+{
+	struct mxc_usbh_platform_data *pdata = pdev->dev.platform_data;
+	struct mxs_usb_private_date *ppriv = pdata->ppriv;
+
+	phy_clock_gate(ppriv, false);
+	if (ppriv->usb_phy_clk) {
+		clk_disable(ppriv->usb_phy_clk);
+		clk_put(ppriv->usb_phy_clk);
+	}
+	if (ppriv->usb_clk) {
+		clk_disable(ppriv->usb_clk);
+		clk_put(ppriv->usb_clk);
+	}
+	if (ppriv->phy_regs)
+		iounmap(ppriv->phy_regs);
+	if (ppriv->ctrl_regs)
+		iounmap(ppriv->ctrl_regs);
+
+	return 0;
+}
+
+static struct mxs_usb_private_date usbh_private = {
+	.internal_phy_clk_already_on = 0,
+};
+
+static struct mxc_usbh_platform_data usbh_config = {
+	.init = fsl_usb_host_init,
+	.exit = fsl_usb_host_uninit,
+	.portsc = MXC_EHCI_MODE_ULPI,
+	.otg = NULL,
+	.plt_irq_handler = fsl_plt_usbh_irq_handler,
+	.ppriv = &usbh_private,
+};
+
+/* The resources for kinds of usb devices */
+static struct resource usbh_resources[] = {
+	{
+		.start = MX28_USBCTRL1_BASE_ADDR,
+		.end = MX28_USBCTRL1_BASE_ADDR + 0x1ff,
+		.flags = IORESOURCE_MEM,
+	},
+	{
+		.start = MX28_INT_USB1,
+		.flags = IORESOURCE_IRQ,
+	},
+};
+
+static int __init usbh_init(void)
+{
+	struct platform_device *pdev;
+	int instance_id = ~(u32) 0;
+	u64 ehci_dmamask = ~(u32) 0;
+
+	if (!cpu_is_mx28())
+		return 0;
+
+	pdev = platform_device_register_resndata(NULL, "mxc-ehci", instance_id,
+			usbh_resources, ARRAY_SIZE(usbh_resources),
+			&usbh_config, sizeof(struct mxc_usbh_platform_data));
+	if (IS_ERR(pdev)) {
+		pr_debug("can't register Host, %ld\n", PTR_ERR(pdev));
+		return PTR_ERR(pdev);
+	}
+
+	pdev->dev.coherent_dma_mask = 0xffffffff;
+	pdev->dev.dma_mask = &ehci_dmamask;
+
+	return 0;
+}
+module_init(usbh_init);
diff --git a/arch/arm/mach-mxs/regs-usbphy-mx28.h b/arch/arm/mach-mxs/regs-usbphy-mx28.h
new file mode 100644
index 0000000..2ec273b
--- /dev/null
+++ b/arch/arm/mach-mxs/regs-usbphy-mx28.h
@@ -0,0 +1,240 @@ 
+/*
+ * Freescale USBPHY Register Definitions
+ *
+ * Copyright 2008-2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ *
+ * Xml Revision: 1.52
+ * Template revision: 26195
+ */
+
+#ifndef __ARCH_ARM___USBPHY_H
+#define __ARCH_ARM___USBPHY_H
+
+
+#define HW_USBPHY_PWD		0x00000000
+#define HW_USBPHY_PWD_SET	0x00000004
+#define HW_USBPHY_PWD_CLR	0x00000008
+#define HW_USBPHY_PWD_TOG	0x0000000c
+
+#define BM_USBPHY_PWD_RXPWDRX	0x00100000
+#define BM_USBPHY_PWD_RXPWDDIFF	0x00080000
+#define BM_USBPHY_PWD_RXPWD1PT1	0x00040000
+#define BM_USBPHY_PWD_RXPWDENV	0x00020000
+
+#define BM_USBPHY_PWD_TXPWDV2I	0x00001000
+#define BM_USBPHY_PWD_TXPWDIBIAS	0x00000800
+#define BM_USBPHY_PWD_TXPWDFS	0x00000400
+
+#define HW_USBPHY_TX		0x00000010
+#define HW_USBPHY_TX_SET	0x00000014
+#define HW_USBPHY_TX_CLR	0x00000018
+#define HW_USBPHY_TX_TOG	0x0000001c
+
+#define BP_USBPHY_TX_USBPHY_TX_EDGECTRL	26
+#define BM_USBPHY_TX_USBPHY_TX_EDGECTRL	0x1C000000
+#define BF_USBPHY_TX_USBPHY_TX_EDGECTRL(v)  \
+		(((v) << 26) & BM_USBPHY_TX_USBPHY_TX_EDGECTRL)
+#define BM_USBPHY_TX_USBPHY_TX_SYNC_INVERT	0x02000000
+#define BM_USBPHY_TX_USBPHY_TX_SYNC_MUX	0x01000000
+
+#define BM_USBPHY_TX_TXENCAL45DP	0x00200000
+#define BP_USBPHY_TX_TXCAL45DP	16
+#define BM_USBPHY_TX_TXCAL45DP	0x000F0000
+#define BF_USBPHY_TX_TXCAL45DP(v)  \
+		(((v) << 16) & BM_USBPHY_TX_TXCAL45DP)
+#define BM_USBPHY_TX_TXENCAL45DN	0x00002000
+#define BP_USBPHY_TX_TXCAL45DN	8
+#define BM_USBPHY_TX_TXCAL45DN	0x00000F00
+#define BF_USBPHY_TX_TXCAL45DN(v)  \
+		(((v) << 8) & BM_USBPHY_TX_TXCAL45DN)
+
+#define BP_USBPHY_TX_D_CAL	0
+#define BM_USBPHY_TX_D_CAL	0x0000000F
+#define BF_USBPHY_TX_D_CAL(v)  \
+		(((v) << 0) & BM_USBPHY_TX_D_CAL)
+
+#define HW_USBPHY_RX		0x00000020
+#define HW_USBPHY_RX_SET	0x00000024
+#define HW_USBPHY_RX_CLR	0x00000028
+#define HW_USBPHY_RX_TOG	0x0000002c
+
+#define BM_USBPHY_RX_RXDBYPASS	0x00400000
+#define BP_USBPHY_RX_DISCONADJ	4
+#define BM_USBPHY_RX_DISCONADJ	0x00000070
+#define BF_USBPHY_RX_DISCONADJ(v)  \
+		(((v) << 4) & BM_USBPHY_RX_DISCONADJ)
+#define BP_USBPHY_RX_ENVADJ	0
+#define BM_USBPHY_RX_ENVADJ	0x00000007
+#define BF_USBPHY_RX_ENVADJ(v)  \
+		(((v) << 0) & BM_USBPHY_RX_ENVADJ)
+
+#define HW_USBPHY_CTRL		0x00000030
+#define HW_USBPHY_CTRL_SET	0x00000034
+#define HW_USBPHY_CTRL_CLR	0x00000038
+#define HW_USBPHY_CTRL_TOG	0x0000003c
+
+#define BM_USBPHY_CTRL_SFTRST	0x80000000
+#define BM_USBPHY_CTRL_CLKGATE	0x40000000
+#define BM_USBPHY_CTRL_UTMI_SUSPENDM	0x20000000
+#define BM_USBPHY_CTRL_HOST_FORCE_LS_SE0	0x10000000
+#define BM_USBPHY_CTRL_ENAUTOSET_USBCLKS	0x04000000
+#define BM_USBPHY_CTRL_ENAUTOCLR_USBCLKGATE	0x02000000
+#define BM_USBPHY_CTRL_FSDLL_RST_EN	0x01000000
+#define BM_USBPHY_CTRL_ENVBUSCHG_WKUP	0x00800000
+#define BM_USBPHY_CTRL_ENIDCHG_WKUP	0x00400000
+#define BM_USBPHY_CTRL_ENDPDMCHG_WKUP	0x00200000
+#define BM_USBPHY_CTRL_ENAUTOCLR_PHY_PWD	0x00100000
+#define BM_USBPHY_CTRL_ENAUTOCLR_CLKGATE	0x00080000
+#define BM_USBPHY_CTRL_ENAUTO_PWRON_PLL	0x00040000
+#define BM_USBPHY_CTRL_WAKEUP_IRQ	0x00020000
+#define BM_USBPHY_CTRL_ENIRQWAKEUP	0x00010000
+#define BM_USBPHY_CTRL_ENUTMILEVEL3	0x00008000
+#define BM_USBPHY_CTRL_ENUTMILEVEL2	0x00004000
+#define BM_USBPHY_CTRL_DATA_ON_LRADC	0x00002000
+#define BM_USBPHY_CTRL_DEVPLUGIN_IRQ	0x00001000
+#define BM_USBPHY_CTRL_ENIRQDEVPLUGIN	0x00000800
+#define BM_USBPHY_CTRL_RESUME_IRQ	0x00000400
+#define BM_USBPHY_CTRL_ENIRQRESUMEDETECT	0x00000200
+#define BM_USBPHY_CTRL_RESUMEIRQSTICKY	0x00000100
+#define BM_USBPHY_CTRL_ENOTGIDDETECT	0x00000080
+#define BM_USBPHY_CTRL_DEVPLUGIN_POLARITY	0x00000020
+#define BM_USBPHY_CTRL_ENDEVPLUGINDETECT	0x00000010
+#define BM_USBPHY_CTRL_HOSTDISCONDETECT_IRQ	0x00000008
+#define BM_USBPHY_CTRL_ENIRQHOSTDISCON	0x00000004
+#define BM_USBPHY_CTRL_ENHOSTDISCONDETECT	0x00000002
+
+#define HW_USBPHY_STATUS	0x00000040
+
+#define BM_USBPHY_STATUS_RESUME_STATUS	0x00000400
+#define BM_USBPHY_STATUS_OTGID_STATUS	0x00000100
+#define BM_USBPHY_STATUS_DEVPLUGIN_STATUS	0x00000040
+#define BM_USBPHY_STATUS_HOSTDISCONDETECT_STATUS	0x00000008
+
+#define HW_USBPHY_DEBUG		0x00000050
+#define HW_USBPHY_DEBUG_SET	0x00000054
+#define HW_USBPHY_DEBUG_CLR	0x00000058
+#define HW_USBPHY_DEBUG_TOG	0x0000005c
+
+#define BM_USBPHY_DEBUG_CLKGATE	0x40000000
+#define BM_USBPHY_DEBUG_HOST_RESUME_DEBUG	0x20000000
+#define BP_USBPHY_DEBUG_SQUELCHRESETLENGTH	25
+#define BM_USBPHY_DEBUG_SQUELCHRESETLENGTH	0x1E000000
+#define BF_USBPHY_DEBUG_SQUELCHRESETLENGTH(v)  \
+		(((v) << 25) & BM_USBPHY_DEBUG_SQUELCHRESETLENGTH)
+#define BM_USBPHY_DEBUG_ENSQUELCHRESET	0x01000000
+#define BP_USBPHY_DEBUG_SQUELCHRESETCOUNT	16
+#define BM_USBPHY_DEBUG_SQUELCHRESETCOUNT	0x001F0000
+#define BF_USBPHY_DEBUG_SQUELCHRESETCOUNT(v)  \
+		(((v) << 16) & BM_USBPHY_DEBUG_SQUELCHRESETCOUNT)
+#define BM_USBPHY_DEBUG_ENTX2RXCOUNT	0x00001000
+#define BP_USBPHY_DEBUG_TX2RXCOUNT	8
+#define BM_USBPHY_DEBUG_TX2RXCOUNT	0x00000F00
+#define BF_USBPHY_DEBUG_TX2RXCOUNT(v)  \
+		(((v) << 8) & BM_USBPHY_DEBUG_TX2RXCOUNT)
+#define BP_USBPHY_DEBUG_ENHSTPULLDOWN	4
+#define BM_USBPHY_DEBUG_ENHSTPULLDOWN	0x00000030
+#define BF_USBPHY_DEBUG_ENHSTPULLDOWN(v)  \
+		(((v) << 4) & BM_USBPHY_DEBUG_ENHSTPULLDOWN)
+#define BP_USBPHY_DEBUG_HSTPULLDOWN	2
+#define BM_USBPHY_DEBUG_HSTPULLDOWN	0x0000000C
+#define BF_USBPHY_DEBUG_HSTPULLDOWN(v)  \
+		(((v) << 2) & BM_USBPHY_DEBUG_HSTPULLDOWN)
+#define BM_USBPHY_DEBUG_DEBUG_INTERFACE_HOLD	0x00000002
+#define BM_USBPHY_DEBUG_OTGIDPIOLOCK	0x00000001
+
+#define HW_USBPHY_DEBUG0_STATUS	0x00000060
+
+#define BP_USBPHY_DEBUG0_STATUS_SQUELCH_COUNT	26
+#define BM_USBPHY_DEBUG0_STATUS_SQUELCH_COUNT	0xFC000000
+#define BF_USBPHY_DEBUG0_STATUS_SQUELCH_COUNT(v) \
+		(((v) << 26) & BM_USBPHY_DEBUG0_STATUS_SQUELCH_COUNT)
+#define BP_USBPHY_DEBUG0_STATUS_UTMI_RXERROR_FAIL_COUNT	16
+#define BM_USBPHY_DEBUG0_STATUS_UTMI_RXERROR_FAIL_COUNT	0x03FF0000
+#define BF_USBPHY_DEBUG0_STATUS_UTMI_RXERROR_FAIL_COUNT(v)  \
+		(((v) << 16) & BM_USBPHY_DEBUG0_STATUS_UTMI_RXERROR_FAIL_COUNT)
+#define BP_USBPHY_DEBUG0_STATUS_LOOP_BACK_FAIL_COUNT	0
+#define BM_USBPHY_DEBUG0_STATUS_LOOP_BACK_FAIL_COUNT	0x0000FFFF
+#define BF_USBPHY_DEBUG0_STATUS_LOOP_BACK_FAIL_COUNT(v)  \
+		(((v) << 0) & BM_USBPHY_DEBUG0_STATUS_LOOP_BACK_FAIL_COUNT)
+
+#define HW_USBPHY_DEBUG1	0x00000070
+#define HW_USBPHY_DEBUG1_SET	0x00000074
+#define HW_USBPHY_DEBUG1_CLR	0x00000078
+#define HW_USBPHY_DEBUG1_TOG	0x0000007c
+
+#define BP_USBPHY_DEBUG1_ENTAILADJVD	13
+#define BM_USBPHY_DEBUG1_ENTAILADJVD	0x00006000
+#define BF_USBPHY_DEBUG1_ENTAILADJVD(v)  \
+		(((v) << 13) & BM_USBPHY_DEBUG1_ENTAILADJVD)
+#define BM_USBPHY_DEBUG1_ENTX2TX	0x00001000
+#define BP_USBPHY_DEBUG1_DBG_ADDRESS	0
+#define BM_USBPHY_DEBUG1_DBG_ADDRESS	0x0000000F
+#define BF_USBPHY_DEBUG1_DBG_ADDRESS(v)  \
+		(((v) << 0) & BM_USBPHY_DEBUG1_DBG_ADDRESS)
+
+#define HW_USBPHY_VERSION	0x00000080
+
+#define BP_USBPHY_VERSION_MAJOR	24
+#define BM_USBPHY_VERSION_MAJOR	0xFF000000
+#define BF_USBPHY_VERSION_MAJOR(v) \
+		(((v) << 24) & BM_USBPHY_VERSION_MAJOR)
+#define BP_USBPHY_VERSION_MINOR	16
+#define BM_USBPHY_VERSION_MINOR	0x00FF0000
+#define BF_USBPHY_VERSION_MINOR(v)  \
+		(((v) << 16) & BM_USBPHY_VERSION_MINOR)
+#define BP_USBPHY_VERSION_STEP	0
+#define BM_USBPHY_VERSION_STEP	0x0000FFFF
+#define BF_USBPHY_VERSION_STEP(v)  \
+		(((v) << 0) & BM_USBPHY_VERSION_STEP)
+
+#define HW_USBPHY_IP		0x00000090
+#define HW_USBPHY_IP_SET	0x00000094
+#define HW_USBPHY_IP_CLR	0x00000098
+#define HW_USBPHY_IP_TOG	0x0000009c
+
+#define BP_USBPHY_IP_DIV_SEL	23
+#define BM_USBPHY_IP_DIV_SEL	0x01800000
+#define BF_USBPHY_IP_DIV_SEL(v)  \
+		(((v) << 23) & BM_USBPHY_IP_DIV_SEL)
+#define BV_USBPHY_IP_DIV_SEL__DEFAULT   0x0
+#define BV_USBPHY_IP_DIV_SEL__LOWER     0x1
+#define BV_USBPHY_IP_DIV_SEL__LOWEST    0x2
+#define BV_USBPHY_IP_DIV_SEL__UNDEFINED 0x3
+#define BP_USBPHY_IP_LFR_SEL	21
+#define BM_USBPHY_IP_LFR_SEL	0x00600000
+#define BF_USBPHY_IP_LFR_SEL(v)  \
+		(((v) << 21) & BM_USBPHY_IP_LFR_SEL)
+#define BV_USBPHY_IP_LFR_SEL__DEFAULT   0x0
+#define BV_USBPHY_IP_LFR_SEL__TIMES_2   0x1
+#define BV_USBPHY_IP_LFR_SEL__TIMES_05  0x2
+#define BV_USBPHY_IP_LFR_SEL__UNDEFINED 0x3
+#define BP_USBPHY_IP_CP_SEL	19
+#define BM_USBPHY_IP_CP_SEL	0x00180000
+#define BF_USBPHY_IP_CP_SEL(v)  \
+		(((v) << 19) & BM_USBPHY_IP_CP_SEL)
+#define BV_USBPHY_IP_CP_SEL__DEFAULT   0x0
+#define BV_USBPHY_IP_CP_SEL__TIMES_2   0x1
+#define BV_USBPHY_IP_CP_SEL__TIMES_05  0x2
+#define BV_USBPHY_IP_CP_SEL__UNDEFINED 0x3
+#define BM_USBPHY_IP_TSTI_TX_DP	0x00040000
+#define BM_USBPHY_IP_TSTI_TX_DM	0x00020000
+#define BM_USBPHY_IP_ANALOG_TESTMODE	0x00010000
+#define BM_USBPHY_IP_EN_USB_CLKS	0x00000004
+#define BM_USBPHY_IP_PLL_LOCKED	0x00000002
+#define BM_USBPHY_IP_PLL_POWER	0x00000001
+#endif /* __ARCH_ARM___USBPHY_H */