From dffceb4b15e4c5fd2487e625a08062a8120bd17f Mon Sep 17 00:00:00 2001 From: Vikas Manocha Date: Tue, 26 Jan 2016 18:12:20 -0800 Subject: 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 Reviewed-by: Simon Glass --- arch/arm/include/asm/arch-stm32f4/stm32_defs.h | 15 +++++++++++++ arch/arm/include/asm/arch-stm32f4/stm32_periph.h | 27 ++++++++++++++++++++++++ arch/arm/mach-stm32/stm32f4/clock.c | 20 ++++++++++++++++++ 3 files changed, 62 insertions(+) create mode 100644 arch/arm/include/asm/arch-stm32f4/stm32_defs.h create mode 100644 arch/arm/include/asm/arch-stm32f4/stm32_periph.h (limited to 'arch') 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 00000000000..29b98aecf44 --- /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 + +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 00000000000..a1af25cb585 --- /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 3deb17aa833..576d3e68ae4 100644 --- a/arch/arm/mach-stm32/stm32f4/clock.c +++ b/arch/arm/mach-stm32/stm32f4/clock.c @@ -11,6 +11,7 @@ #include #include #include +#include #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; + } +} -- cgit v1.2.3