diff options
| author | Vikas Manocha <vikas.manocha@st.com> | 2016-01-26 18:12:20 -0800 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2016-02-08 10:10:36 -0500 |
| commit | dffceb4b15e4c5fd2487e625a08062a8120bd17f (patch) | |
| tree | 05a29103a2e5f7ae1b580d9b53cc75dcd9919d8c /arch/arm | |
| parent | 334a994a3c09607bc0a8f746ee2bbda5eaec3ede (diff) | |
serial: serial_stm32: move clock config from driver to board
This patch removes the uart clock enable from serial driver & move it in the
board code.
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/include/asm/arch-stm32f4/stm32_defs.h | 15 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-stm32f4/stm32_periph.h | 27 | ||||
| -rw-r--r-- | arch/arm/mach-stm32/stm32f4/clock.c | 20 |
3 files changed, 62 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-stm32f4/stm32_defs.h b/arch/arm/include/asm/arch-stm32f4/stm32_defs.h new file mode 100644 index 0000000000..29b98aecf4 --- /dev/null +++ b/arch/arm/include/asm/arch-stm32f4/stm32_defs.h @@ -0,0 +1,15 @@ +/* + * (C) Copyright 2016 + * Vikas Manocha, ST Micoelectronics, vikas.manocha@st.com. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __STM32_DEFS_H__ +#define __STM32_DEFS_H__ +#include <asm/arch/stm32_periph.h> + +int clock_setup(enum periph_clock); + +#endif + diff --git a/arch/arm/include/asm/arch-stm32f4/stm32_periph.h b/arch/arm/include/asm/arch-stm32f4/stm32_periph.h new file mode 100644 index 0000000000..a1af25cb58 --- /dev/null +++ b/arch/arm/include/asm/arch-stm32f4/stm32_periph.h @@ -0,0 +1,27 @@ +/* + * (C) Copyright 2016 + * Vikas Manocha, ST Micoelectronics, vikas.manocha@st.com. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __ASM_ARM_ARCH_PERIPH_H +#define __ASM_ARM_ARCH_PERIPH_H + +/* + * Peripherals required for pinmux configuration. List will + * grow with support for more devices getting added. + * Numbering based on interrupt table. + * + */ +enum periph_id { + UART1_GPIOA_9_10 = 0, + UART2_GPIOD_5_6, +}; + +enum periph_clock { + USART1_CLOCK_CFG = 0, + USART2_CLOCK_CFG, +}; + +#endif /* __ASM_ARM_ARCH_PERIPH_H */ diff --git a/arch/arm/mach-stm32/stm32f4/clock.c b/arch/arm/mach-stm32/stm32f4/clock.c index 3deb17aa83..576d3e68ae 100644 --- a/arch/arm/mach-stm32/stm32f4/clock.c +++ b/arch/arm/mach-stm32/stm32f4/clock.c @@ -11,6 +11,7 @@ #include <common.h> #include <asm/io.h> #include <asm/arch/stm32.h> +#include <asm/arch/stm32_periph.h> #define RCC_CR_HSION (1 << 0) #define RCC_CR_HSEON (1 << 16) @@ -50,6 +51,14 @@ #define RCC_APB1ENR_PWREN (1 << 28) +/* + * RCC USART specific definitions + */ +#define RCC_ENR_USART1EN (1 << 4) +#define RCC_ENR_USART2EN (1 << 17) +#define RCC_ENR_USART3EN (1 << 18) +#define RCC_ENR_USART6EN (1 << 5) + #define PWR_CR_VOS0 (1 << 14) #define PWR_CR_VOS1 (1 << 15) #define PWR_CR_VOS_MASK 0xC000 @@ -221,3 +230,14 @@ unsigned long clock_get(enum clock clck) break; } } + +void clock_setup(int peripheral) +{ + switch (peripheral) { + case USART1_CLOCK_CFG: + setbits_le32(&STM32_RCC->apb2enr, RCC_ENR_USART1EN); + break; + default: + break; + } +} |