| Message ID | 1505318412-27121-6-git-send-email-patrice.chotard@st.com |
|---|---|
| State | Accepted |
| Delegated to: | Tom Rini |
| Headers | show |
| Series | Add STM32H7 SoC, Discovery and Evaluation board support | expand |
On 13 September 2017 at 10:00, <patrice.chotard@st.com> wrote: > From: Christophe Kerello <christophe.kerello@st.com> > > This patch adds the support of reset and clock control > block (rcc) found on STM32 SoCs. > This driver is similar to a MFD linux driver. > > This driver supports currently STM32H7 only. > STM32F4 and STM32F7 will be migrated to this rcc MFD driver > in the future to uniformize all STM32 SoCs already upstreamed. > > Signed-off-by: Christophe Kerello <christophe.kerello@st.com> > Signed-off-by: Patrice Chotard <patrice.chotard@st.com> > Reviewed-by: Vikas Manocha <vikas.manocha@st.com> > --- > > v2: _ merge peripheral and kernel clocks arrays > _ add voltage scaling support needed for Evaluation board > > drivers/misc/Kconfig | 9 +++++++++ > drivers/misc/Makefile | 1 + > drivers/misc/stm32_rcc.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ > 3 files changed, 55 insertions(+) > create mode 100644 drivers/misc/stm32_rcc.c Reviewed-by: Simon Glass <sjg@chromium.org>
On Wed, Sep 13, 2017 at 06:00:08PM +0200, patrice.chotard@st.com wrote: > From: Christophe Kerello <christophe.kerello@st.com> > > This patch adds the support of reset and clock control > block (rcc) found on STM32 SoCs. > This driver is similar to a MFD linux driver. > > This driver supports currently STM32H7 only. > STM32F4 and STM32F7 will be migrated to this rcc MFD driver > in the future to uniformize all STM32 SoCs already upstreamed. > > Signed-off-by: Christophe Kerello <christophe.kerello@st.com> > Signed-off-by: Patrice Chotard <patrice.chotard@st.com> > Reviewed-by: Vikas Manocha <vikas.manocha@st.com> > Reviewed-by: Simon Glass <sjg@chromium.org> Applied to u-boot/master, thanks!
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index 4133017..f1c15cb 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -158,6 +158,15 @@ config PCA9551_I2C_ADDR help The I2C address of the PCA9551 LED controller. +config STM32_RCC + bool "Enable RCC driver for the STM32 SoC's family" + depends on STM32 && MISC + help + Enable the STM32 RCC driver. The RCC block (Reset and Clock Control + block) is responsible of the management of the clock and reset + generation. + This driver is similar to an MFD driver in the Linux kernel. + config TEGRA_CAR bool "Enable support for the Tegra CAR driver" depends on TEGRA_NO_BPMP diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index 21f7e6c..ada7624 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -52,3 +52,4 @@ obj-$(CONFIG_FSL_DEVICE_DISABLE) += fsl_devdis.o obj-$(CONFIG_WINBOND_W83627) += winbond_w83627.o obj-$(CONFIG_QFW) += qfw.o obj-$(CONFIG_ROCKCHIP_EFUSE) += rockchip-efuse.o +obj-$(CONFIG_STM32_RCC) += stm32_rcc.o diff --git a/drivers/misc/stm32_rcc.c b/drivers/misc/stm32_rcc.c new file mode 100644 index 0000000..a6c2a75 --- /dev/null +++ b/drivers/misc/stm32_rcc.c @@ -0,0 +1,45 @@ +/* + * Copyright (C) STMicroelectronics SA 2017 + * Author(s): Patrice CHOTARD, <patrice.chotard@st.com> for STMicroelectronics. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <dm.h> +#include <misc.h> +#include <dm/lists.h> + +static int stm32_rcc_bind(struct udevice *dev) +{ + int ret; + struct udevice *child; + + debug("%s(dev=%p)\n", __func__, dev); + + ret = device_bind_driver_to_node(dev, "stm32h7_rcc_clock", + "stm32h7_rcc_clock", + dev_ofnode(dev), &child); + if (ret) + return ret; + + return device_bind_driver_to_node(dev, "stm32_rcc_reset", + "stm32_rcc_reset", + dev_ofnode(dev), &child); +} + +static const struct misc_ops stm32_rcc_ops = { +}; + +static const struct udevice_id stm32_rcc_ids[] = { + {.compatible = "st,stm32h743-rcc"}, + { } +}; + +U_BOOT_DRIVER(stm32_rcc) = { + .name = "stm32-rcc", + .id = UCLASS_MISC, + .of_match = stm32_rcc_ids, + .bind = stm32_rcc_bind, + .ops = &stm32_rcc_ops, +};