Patchwork [U-Boot,2/2] powerpc/85xx: Update USB device tree status based on pin settings

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Submitter Kumar Gala
Date Oct. 14, 2011, 7:10 p.m.
Message ID <1318619444-2059-2-git-send-email-galak@kernel.crashing.org>
Download mbox | patch
Permalink /patch/119907/
State Accepted
Commit f81f19fafaa8e88649e252a6d84096c83e682853
Delegated to: Kumar Gala
Headers show

Comments

Kumar Gala - Oct. 14, 2011, 7:10 p.m.
From: Shengzhou Liu <Shengzhou.Liu@freescale.com>

For P3060 and P4080, USB pins are multiplexed with other functions.
Update the device tree status for USB ports based on setting of
RCW[EC1] & RCW[EC2] which describe if pins are muxed to usb.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---
 arch/powerpc/cpu/mpc85xx/fdt.c |   23 +++++++++++++++++++++++
 1 files changed, 23 insertions(+), 0 deletions(-)
Kumar Gala - Oct. 21, 2011, 5:16 a.m.
On Oct 14, 2011, at 2:10 PM, Kumar Gala wrote:

> From: Shengzhou Liu <Shengzhou.Liu@freescale.com>
> 
> For P3060 and P4080, USB pins are multiplexed with other functions.
> Update the device tree status for USB ports based on setting of
> RCW[EC1] & RCW[EC2] which describe if pins are muxed to usb.
> 
> Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
> ---
> arch/powerpc/cpu/mpc85xx/fdt.c |   23 +++++++++++++++++++++++
> 1 files changed, 23 insertions(+), 0 deletions(-)

applied to 85xx

- k

Patch

diff --git a/arch/powerpc/cpu/mpc85xx/fdt.c b/arch/powerpc/cpu/mpc85xx/fdt.c
index d20c94c..5c85a4f 100644
--- a/arch/powerpc/cpu/mpc85xx/fdt.c
+++ b/arch/powerpc/cpu/mpc85xx/fdt.c
@@ -538,6 +538,27 @@  void fdt_fixup_fman_firmware(void *blob)
 #define fdt_fixup_fman_firmware(x)
 #endif
 
+#if defined(CONFIG_PPC_P4080) || defined(CONFIG_PPC_P3060)
+static void fdt_fixup_usb(void *fdt)
+{
+	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+	u32 rcwsr11 = in_be32(&gur->rcwsr[11]);
+	int off;
+
+	off = fdt_node_offset_by_compatible(fdt, -1, "fsl,mpc85xx-usb2-mph");
+	if ((rcwsr11 & FSL_CORENET_RCWSR11_EC1) !=
+				FSL_CORENET_RCWSR11_EC1_FM1_USB1)
+		fdt_status_disabled(fdt, off);
+
+	off = fdt_node_offset_by_compatible(fdt, -1, "fsl,mpc85xx-usb2-dr");
+	if ((rcwsr11 & FSL_CORENET_RCWSR11_EC2) !=
+				FSL_CORENET_RCWSR11_EC2_USB2)
+		fdt_status_disabled(fdt, off);
+}
+#else
+#define fdt_fixup_usb(x)
+#endif
+
 void ft_cpu_setup(void *blob, bd_t *bd)
 {
 	int off;
@@ -642,6 +663,8 @@  void ft_cpu_setup(void *blob, bd_t *bd)
 
 	do_fixup_by_compat_u32(blob, "fsl,flexcan-v1.0",
 			"clock_freq", gd->bus_clk, 1);
+
+	fdt_fixup_usb(blob);
 }
 
 /*