diff --git a/arch/arm/src/stm32f7/Kconfig b/arch/arm/src/stm32f7/Kconfig index 5c4f8662cf4..10ad12ad88a 100644 --- a/arch/arm/src/stm32f7/Kconfig +++ b/arch/arm/src/stm32f7/Kconfig @@ -167,6 +167,10 @@ config STM32F7_I2C1 default n select STM32F7_I2C +config STM32F7_CEC + bool "HDMI-CEC" + default n + config STM32F7_I2C2 bool "I2C2" default n @@ -177,6 +181,10 @@ config STM32F7_I2C3 default n select STM32F7_I2C +config STM32F7_LPTIM1 + bool "Low-power timer 1" + default n + config STM32F7_LTDC bool "LTDC" default n @@ -204,10 +212,11 @@ config STM32F7_OTGHS default n select USBHOST_HAVE_ASYNCH if USBHOST -config STM32F7_PWR - bool "PWR" +config STM32F7_QUADSPI + bool "QuadSPI" default n +config STM32F7_SAI1 config STM32F7_RNG bool "RNG" default n diff --git a/arch/arm/src/stm32f7/Make.defs b/arch/arm/src/stm32f7/Make.defs index 4bc683c70cc..cb0094753ab 100644 --- a/arch/arm/src/stm32f7/Make.defs +++ b/arch/arm/src/stm32f7/Make.defs @@ -107,4 +107,4 @@ endif # Required STM32F7 files CHIP_ASRCS = -CHIP_CSRCS = stm32_irq.c stm32_start.c stm32_timerisr.c +CHIP_CSRCS = stm32_irq.c stm32_rcc.c stm32_start.c stm32_timerisr.c diff --git a/arch/arm/src/stm32f7/chip/stm32_gpio.h b/arch/arm/src/stm32f7/chip/stm32_gpio.h index f1cb61c863a..5b89574b0f2 100644 --- a/arch/arm/src/stm32f7/chip/stm32_gpio.h +++ b/arch/arm/src/stm32f7/chip/stm32_gpio.h @@ -50,4 +50,3 @@ #endif #endif /* __ARCH_ARM_SRC_STM32F7_CHIP_STM32_GPIO_H */ - diff --git a/arch/arm/src/stm32f7/chip/stm32_memorymap.h b/arch/arm/src/stm32f7/chip/stm32_memorymap.h index ac1d3367d7f..f3ef8a1d53b 100644 --- a/arch/arm/src/stm32f7/chip/stm32_memorymap.h +++ b/arch/arm/src/stm32f7/chip/stm32_memorymap.h @@ -50,4 +50,3 @@ #endif #endif /* __ARCH_ARM_SRC_STM32F7_CHIP_STM32_MEMORYMAP_H */ - diff --git a/arch/arm/src/stm32f7/stm32_rcc.c b/arch/arm/src/stm32f7/stm32_rcc.c new file mode 100644 index 00000000000..22d06a185c7 --- /dev/null +++ b/arch/arm/src/stm32f7/stm32_rcc.c @@ -0,0 +1,175 @@ +/**************************************************************************** + * arch/arm/src/stm32f7/stm32_rcc.c + * + * Copyright (C) 2015 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include + +#include +#include +#include +#include + +#include + +#include "up_internal.h" +#include "up_arch.h" + +#include "chip.h" +#include "stm32_rcc.h" +#include "stm32_flash.h" + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/* Allow up to 100 milliseconds for the high speed clock to become ready. + * that is a very long delay, but if the clock does not become ready we are + * hosed anyway. + */ + +#define HSERDY_TIMEOUT (100 * CONFIG_BOARD_LOOPSPERMSEC) + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/* Include chip-specific clocking initialization logic */ + +#if defined(CONFIG_STM32F7_STM32F74XX) || defined(CONFIG_STM32F7_STM32F75XX) +# include "stm32f74xx75xx_rcc.c" +#else +# error "Unsupported STM32 F7 chip" +#endif + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: stm32_clockconfig + * + * Description: + * Called to establish the clock settings based on the values in board.h. + * This function (by default) will reset most everything, enable the PLL, + * and enable peripheral clocking for all peripherals enabled in the NuttX + * configurationfile. + * + * If CONFIG_ARCH_BOARD_STM32_CUSTOM_CLOCKCONFIG is defined, then clocking + * will be enabled by an externally provided, board-specific function called + * stm32_board_clockconfig(). + * + * Input Parameters: + * None + * + * Returned Value: + * None + * + ************************************************************************************/ + +void stm32_clockconfig(void) +{ + /* Make sure that we are starting in the reset state */ + + rcc_reset(); + +#if defined(CONFIG_ARCH_BOARD_STM32_CUSTOM_CLOCKCONFIG) + + /* Invoke Board Custom Clock Configuration */ + + stm32_board_clockconfig(); + +#else + + /* Invoke standard, fixed clock configuration based on definitions in board.h */ + + stm32_stdclockconfig(); + +#endif + + /* Enable peripheral clocking */ + + rcc_enableperipherals(); +} + +/************************************************************************************ + * Name: stm32_clockenable + * + * Description: + * Re-enable the clock and restore the clock settings based on settings in board.h. + * This function is only available to support low-power modes of operation: When + * re-awakening from deep-sleep modes, it is necessary to re-enable/re-start the + * PLL + * + * This functional performs a subset of the operations performed by + * stm32_clockconfig(): It does not reset any devices, and it does not reset the + * currenlty enabled peripheral clocks. + * + * If CONFIG_ARCH_BOARD_STM32_CUSTOM_CLOCKCONFIG is defined, then clocking will + * be enabled by an externally provided, board-specific function called + * stm32_board_clockconfig(). + * + * Input Parameters: + * None + * + * Returned Value: + * None + * + ************************************************************************************/ + +#ifdef CONFIG_PM +void stm32_clockenable(void) +{ +#if defined(CONFIG_ARCH_BOARD_STM32_CUSTOM_CLOCKCONFIG) + + /* Invoke Board Custom Clock Configuration */ + + stm32_board_clockconfig(); + +#else + + /* Invoke standard, fixed clock configuration based on definitions in board.h */ + + stm32_stdclockconfig(); + +#endif +} +#endif diff --git a/arch/arm/src/stm32f7/stm32f74xx75xx_rcc.c b/arch/arm/src/stm32f7/stm32f74xx75xx_rcc.c new file mode 100644 index 00000000000..93a48752186 --- /dev/null +++ b/arch/arm/src/stm32f7/stm32f74xx75xx_rcc.c @@ -0,0 +1,870 @@ +/**************************************************************************** + * arch/arm/src/stm32f7/stm32f74xxx75xx_rcc.c + * + * Copyright (C) 2015 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include "stm32_pwr.h" + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/* Allow up to 100 milliseconds for the high speed clock to become ready. + * that is a very long delay, but if the clock does not become ready we are + * hosed anyway. Normally this is very fast, but I have seen at least one + * board that required this long, long timeout for the HSE to be ready. + */ + +#define HSERDY_TIMEOUT (100 * CONFIG_BOARD_LOOPSPERMSEC) + +/* Same for HSI */ + +#define HSIRDY_TIMEOUT HSERDY_TIMEOUT + +/* HSE divisor to yield ~1MHz RTC clock */ + +#define HSE_DIVISOR (STM32_HSE_FREQUENCY + 500000) / 1000000 + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: rcc_reset + * + * Description: + * Reset the RCC clock configuration to the default reset state + * + ****************************************************************************/ + +static inline void rcc_reset(void) +{ + uint32_t regval; + + /* Enable the Internal High Speed clock (HSI) */ + + regval = getreg32(STM32_RCC_CR); + regval |= RCC_CR_HSION; + putreg32(regval, STM32_RCC_CR); + + /* Reset CFGR register */ + + putreg32(0x00000000, STM32_RCC_CFGR); + + /* Reset HSION, HSEON, CSSON and PLLON bits */ + + regval = getreg32(STM32_RCC_CR); + regval &= ~(RCC_CR_HSION|RCC_CR_HSEON|RCC_CR_CSSON|RCC_CR_PLLON); + putreg32(regval, STM32_RCC_CR); + + /* Reset PLLCFGR register to reset default */ + + putreg32(RCC_PLLCFG_RESET, STM32_RCC_PLLCFG); + + /* Reset HSEBYP bit */ + + regval = getreg32(STM32_RCC_CR); + regval &= ~RCC_CR_HSEBYP; + putreg32(regval, STM32_RCC_CR); + + /* Disable all interrupts */ + + putreg32(0x00000000, STM32_RCC_CIR); +} + +/**************************************************************************** + * Name: rcc_enableahb1 + * + * Description: + * Enable selected AHB1 peripherals + * + ****************************************************************************/ + +static inline void rcc_enableahb1(void) +{ + uint32_t regval; + + /* Set the appropriate bits in the AHB1ENR register to enabled the + * selected AHB1 peripherals. + */ + + regval = getreg32(STM32_RCC_AHB1ENR); + + /* Enable GPIOA, GPIOB, .... GPIOI*/ + +#if STM32F7_NGPIO > 0 + regval |= (RCC_AHB1ENR_GPIOAEN +#if STM32F7_NGPIO > 1 + | RCC_AHB1ENR_GPIOBEN +#endif +#if STM32F7_NGPIO > 2 + | RCC_AHB1ENR_GPIOCEN +#endif +#if STM32F7_NGPIO > 3 + | RCC_AHB1ENR_GPIODEN +#endif +#if STM32F7_NGPIO > 4 + | RCC_AHB1ENR_GPIOEEN +#endif +#if STM32F7_NGPIO > 5 + | RCC_AHB1ENR_GPIOFEN +#endif +#if STM32F7_NGPIO > 6 + | RCC_AHB1ENR_GPIOGEN +#endif +#if STM32F7_NGPIO > 7 + | RCC_AHB1ENR_GPIOHEN +#endif +#if STM32F7_NGPIO > 8 + | RCC_AHB1ENR_GPIOIEN +#endif +#if STM32F7_NGPIO > 9 + | RCC_AHB1ENR_GPIOJEN +#endif +#if STM32F7_NGPIO > 10 + | RCC_AHB1ENR_GPIOKEN +#endif + ); +#endif + +#ifdef CONFIG_STM32F7_CRC + /* CRC clock enable */ + + regval |= RCC_AHB1ENR_CRCEN; +#endif + +#ifdef CONFIG_STM32F7_BKPSRAM + /* Backup SRAM clock enable */ + + regval |= RCC_AHB1ENR_BKPSRAMEN; +#endif + +#ifdef CONFIG_ARMV7M_DTCM + /* DTCM data RAM clock enable */ + + regval |= RCC_AHB1ENR_DTCMRAMEN; +#endif + +#ifdef CONFIG_STM32F7_DMA1 + /* DMA 1 clock enable */ + + regval |= RCC_AHB1ENR_DMA1EN; +#endif + +#ifdef CONFIG_STM32F7_DMA2 + /* DMA 2 clock enable */ + + regval |= RCC_AHB1ENR_DMA2EN; +#endif + +#ifdef CONFIG_STM32F7_DMA2D + /* DMA2D clock */ + + regval |= RCC_AHB1ENR_DMA2DEN; +#endif + +#ifdef CONFIG_STM32F7_ETHMAC + /* Ethernet MAC clocking */ + + regval |= (RCC_AHB1ENR_ETHMACEN | RCC_AHB1ENR_ETHMACTXEN | \ + RCC_AHB1ENR_ETHMACRXEN); + +#ifdef CONFIG_STM32F7_ETH_PTP + /* Precision Time Protocol (PTP) */ + + regval |= RCC_AHB1ENR_ETHMACPTPEN; + +#endif +#endif + +#ifdef CONFIG_STM32F7_OTGHS + /* USB OTG HS */ + + regval |= RCC_AHB1ENR_OTGHSEN; + +#endif /* CONFIG_STM32F7_OTGHS */ + + putreg32(regval, STM32_RCC_AHB1ENR); /* Enable peripherals */ +} + +/**************************************************************************** + * Name: rcc_enableahb2 + * + * Description: + * Enable selected AHB2 peripherals + * + ****************************************************************************/ + +static inline void rcc_enableahb2(void) +{ + uint32_t regval; + + /* Set the appropriate bits in the AHB2ENR register to enabled the + * selected AHB2 peripherals. + */ + + regval = getreg32(STM32_RCC_AHB2ENR); + +#ifdef CONFIG_STM32F7_DCMI + /* Camera interface enable */ + + regval |= RCC_AHB2ENR_DCMIEN; +#endif + +#ifdef CONFIG_STM32F7_CRYP + /* Cryptographic modules clock enable */ + + regval |= RCC_AHB2ENR_CRYPEN; +#endif + +#ifdef CONFIG_STM32F7_HASH + /* Hash modules clock enable */ + + regval |= RCC_AHB2ENR_HASHEN; +#endif + +#ifdef CONFIG_STM32F7_RNG + /* Random number generator clock enable */ + + regval |= RCC_AHB2ENR_RNGEN; +#endif + +#ifdef CONFIG_STM32F7_OTGFS + /* USB OTG FS clock enable */ + + regval |= RCC_AHB2ENR_OTGFSEN; +#endif + + putreg32(regval, STM32_RCC_AHB2ENR); /* Enable peripherals */ +} + +/**************************************************************************** + * Name: rcc_enableahb3 + * + * Description: + * Enable selected AHB3 peripherals + * + ****************************************************************************/ + +static inline void rcc_enableahb3(void) +{ + uint32_t regval; + + /* Set the appropriate bits in the AHB3ENR register to enabled the + * selected AHB3 peripherals. + */ + + regval = getreg32(STM32_RCC_AHB3ENR); + +#ifdef CONFIG_STM32F7_FSMC + /* Flexible static memory controller module clock enable */ + + regval |= RCC_AHB3ENR_FSMCEN; +#endif + +#ifdef CONFIG_STM32F7_QUADSPI + /* FQuad SPI memory controller clock enable */ + + regval |= RCC_AHB3ENR_QSPIEN; +#endif + + putreg32(regval, STM32_RCC_AHB3ENR); /* Enable peripherals */ +} + +/**************************************************************************** + * Name: rcc_enableapb1 + * + * Description: + * Enable selected APB1 peripherals + * + ****************************************************************************/ + +static inline void rcc_enableapb1(void) +{ + uint32_t regval; + + /* Set the appropriate bits in the APB1ENR register to enabled the + * selected APB1 peripherals. + */ + + regval = getreg32(STM32_RCC_APB1ENR); + +#ifdef CONFIG_STM32F7_TIM2 + /* TIM2 clock enable */ + + regval |= RCC_APB1ENR_TIM2EN; +#endif + +#ifdef CONFIG_STM32F7_TIM3 + /* TIM3 clock enable */ + + regval |= RCC_APB1ENR_TIM3EN; +#endif + +#ifdef CONFIG_STM32F7_TIM4 + /* TIM4 clock enable */ + + regval |= RCC_APB1ENR_TIM4EN; +#endif + +#ifdef CONFIG_STM32F7_TIM5 + /* TIM5 clock enable */ + + regval |= RCC_APB1ENR_TIM5EN; +#endif + +#ifdef CONFIG_STM32F7_TIM6 + /* TIM6 clock enable */ + + regval |= RCC_APB1ENR_TIM6EN; +#endif + +#ifdef CONFIG_STM32F7_TIM7 + /* TIM7 clock enable */ + + regval |= RCC_APB1ENR_TIM7EN; +#endif + +#ifdef CONFIG_STM32F7_TIM12 + /* TIM12 clock enable */ + + regval |= RCC_APB1ENR_TIM12EN; +#endif + +#ifdef CONFIG_STM32F7_TIM13 + /* TIM13 clock enable */ + + regval |= RCC_APB1ENR_TIM13EN; +#endif + +#ifdef CONFIG_STM32F7_TIM14 + /* TIM14 clock enable */ + + regval |= RCC_APB1ENR_TIM14EN; +#endif + +#ifdef CONFIG_STM32F7_LPTIM1 + /* Low-power timer 1 clock enable */ + + regval |= RCC_APB1ENR_LPTIM1EN; +#endif + +#ifdef CONFIG_STM32F7_WWDG + /* Window watchdog clock enable */ + + regval |= RCC_APB1ENR_WWDGEN; +#endif + +#ifdef CONFIG_STM32F7_SPI2 + /* SPI2 clock enable */ + + regval |= RCC_APB1ENR_SPI2EN; +#endif + +#ifdef CONFIG_STM32F7_SPI3 + /* SPI3 clock enable */ + + regval |= RCC_APB1ENR_SPI3EN; +#endif + +#ifdef CONFIG_STM32F7_SPDIFRX + /* SPDIFRX clock enable */ + + regval |= RCC_APB1ENR_SPDIFRXEN; +#endif + +#ifdef CONFIG_STM32F7_USART2 + /* USART 2 clock enable */ + + regval |= RCC_APB1ENR_USART2EN; +#endif + +#ifdef CONFIG_STM32F7_USART3 + /* USART3 clock enable */ + + regval |= RCC_APB1ENR_USART3EN; +#endif + +#ifdef CONFIG_STM32F7_UART4 + /* UART4 clock enable */ + + regval |= RCC_APB1ENR_UART4EN; +#endif + +#ifdef CONFIG_STM32F7_UART5 + /* UART5 clock enable */ + + regval |= RCC_APB1ENR_UART5EN; +#endif + +#ifdef CONFIG_STM32F7_I2C1 + /* I2C1 clock enable */ + + regval |= RCC_APB1ENR_I2C1EN; +#endif + +#ifdef CONFIG_STM32F7_I2C2 + /* I2C2 clock enable */ + + regval |= RCC_APB1ENR_I2C2EN; +#endif + +#ifdef CONFIG_STM32F7_I2C3 + /* I2C3 clock enable */ + + regval |= RCC_APB1ENR_I2C3EN; +#endif + +#ifdef CONFIG_STM32F7_I2C4 + /* I2C4 clock enable */ + + regval |= RCC_APB1ENR_I2C4EN; +#endif + +#ifdef CONFIG_STM32F7_CAN1 + /* CAN 1 clock enable */ + + regval |= RCC_APB1ENR_CAN1EN; +#endif + +#ifdef CONFIG_STM32F7_CAN2 + /* CAN2 clock enable. NOTE: CAN2 needs CAN1 clock as well. */ + + regval |= (RCC_APB1ENR_CAN1EN | RCC_APB1ENR_CAN2EN); +#endif + +#ifdef CONFIG_STM32F7_CEC + /* CEC clock enable. */ + + regval |= RCC_APB1ENR_CECEN; +#endif + + /* Power interface clock enable. The PWR block is always enabled so that + * we can set the internal voltage regulator for maximum performance. + */ + + regval |= RCC_APB1ENR_PWREN; + +#if defined (CONFIG_STM32F7_DAC1) || defined(CONFIG_STM32F7_DAC2) + /* DAC interface clock enable */ + + regval |= RCC_APB1ENR_DACEN; +#endif + +#ifdef CONFIG_STM32F7_UART7 + /* UART7 clock enable */ + + regval |= RCC_APB1ENR_UART7EN; +#endif + +#ifdef CONFIG_STM32F7_UART8 + /* UART8 clock enable */ + + regval |= RCC_APB1ENR_UART8EN; +#endif + + putreg32(regval, STM32_RCC_APB1ENR); /* Enable peripherals */ +} + +/**************************************************************************** + * Name: rcc_enableapb2 + * + * Description: + * Enable selected APB2 peripherals + * + ****************************************************************************/ + +static inline void rcc_enableapb2(void) +{ + uint32_t regval; + + /* Set the appropriate bits in the APB2ENR register to enabled the + * selected APB2 peripherals. + */ + + regval = getreg32(STM32_RCC_APB2ENR); + +#ifdef CONFIG_STM32F7_TIM1 + /* TIM1 clock enable */ + + regval |= RCC_APB2ENR_TIM1EN; +#endif + +#ifdef CONFIG_STM32F7_TIM8 + /* TIM8 clock enable */ + + regval |= RCC_APB2ENR_TIM8EN; +#endif + +#ifdef CONFIG_STM32F7_USART1 + /* USART1 clock enable */ + + regval |= RCC_APB2ENR_USART1EN; +#endif + +#ifdef CONFIG_STM32F7_USART6 + /* USART6 clock enable */ + + regval |= RCC_APB2ENR_USART6EN; +#endif + +#ifdef CONFIG_STM32F7_ADC1 + /* ADC1 clock enable */ + + regval |= RCC_APB2ENR_ADC1EN; +#endif + +#ifdef CONFIG_STM32F7_ADC2 + /* ADC2 clock enable */ + + regval |= RCC_APB2ENR_ADC2EN; +#endif + +#ifdef CONFIG_STM32F7_ADC3 + /* ADC3 clock enable */ + + regval |= RCC_APB2ENR_ADC3EN; +#endif + +#ifdef CONFIG_STM32F7_SDMMC1 + /* SDIO clock enable */ + + regval |= RCC_APB2ENR_SDMMC1EN; +#endif + +#ifdef CONFIG_STM32F7_SPI1 + /* SPI1 clock enable */ + + regval |= RCC_APB2ENR_SPI1EN; +#endif + +#ifdef CONFIG_STM32F7_SPI4 + /* SPI4 clock enable */ + + regval |= RCC_APB2ENR_SPI4EN; +#endif + + /* System configuration controller clock enable */ + + regval |= RCC_APB2ENR_SYSCFGEN; + +#ifdef CONFIG_STM32F7_TIM9 + /* TIM9 clock enable */ + + regval |= RCC_APB2ENR_TIM9EN; +#endif + +#ifdef CONFIG_STM32F7_TIM10 + /* TIM10 clock enable */ + + regval |= RCC_APB2ENR_TIM10EN; +#endif + +#ifdef CONFIG_STM32F7_TIM11 + /* TIM11 clock enable */ + + regval |= RCC_APB2ENR_TIM11EN; +#endif + +#ifdef CONFIG_STM32F7_SPI5 + /* SPI5 clock enable */ + + regval |= RCC_APB2ENR_SPI5EN; +#endif + +#ifdef CONFIG_STM32F7_SPI6 + /* SPI6 clock enable */ + + regval |= RCC_APB2ENR_SPI6EN; +#endif + +#ifdef CONFIG_STM32F7_SAI1 + /* SPI6 clock enable */ + + regval |= RCC_APB2ENR_SAI1EN; +#endif + +#ifdef CONFIG_STM32F7_SAI2 + /* SPI6 clock enable */ + + regval |= RCC_APB2ENR_SAI2EN; +#endif + +#ifdef CONFIG_STM32F7_LTDC + /* LTDC clock enable */ + + regval |= RCC_APB2ENR_LTDCEN; +#endif + + putreg32(regval, STM32_RCC_APB2ENR); /* Enable peripherals */ +} + +/**************************************************************************** + * Name: stm32_stdclockconfig + * + * Description: + * Called to change to new clock based on settings in board.h + * + * NOTE: This logic would need to be extended if you need to select low- + * power clocking modes! + ****************************************************************************/ + +#ifndef CONFIG_ARCH_BOARD_STM32_CUSTOM_CLOCKCONFIG +static void stm32_stdclockconfig(void) +{ + uint32_t regval; + volatile int32_t timeout; + +#ifdef STM32_BOARD_USEHSI + /* Enable Internal High-Speed Clock (HSI) */ + + regval = getreg32(STM32_RCC_CR); + regval |= RCC_CR_HSION; /* Enable HSI */ + putreg32(regval, STM32_RCC_CR); + + /* Wait until the HSI is ready (or until a timeout elapsed) */ + + for (timeout = HSIRDY_TIMEOUT; timeout > 0; timeout--) + { + /* Check if the HSIRDY flag is the set in the CR */ + + if ((getreg32(STM32_RCC_CR) & RCC_CR_HSIRDY) != 0) + { + /* If so, then break-out with timeout > 0 */ + + break; + } + } + +#else /* if STM32_BOARD_USEHSE */ + /* Enable External High-Speed Clock (HSE) */ + + regval = getreg32(STM32_RCC_CR); + regval |= RCC_CR_HSEON; /* Enable HSE */ + putreg32(regval, STM32_RCC_CR); + + /* Wait until the HSE is ready (or until a timeout elapsed) */ + + for (timeout = HSERDY_TIMEOUT; timeout > 0; timeout--) + { + /* Check if the HSERDY flag is the set in the CR */ + + if ((getreg32(STM32_RCC_CR) & RCC_CR_HSERDY) != 0) + { + /* If so, then break-out with timeout > 0 */ + + break; + } + } +#endif + + /* Check for a timeout. If this timeout occurs, then we are hosed. We + * have no real back-up plan, although the following logic makes it look + * as though we do. + */ + + if (timeout > 0) + { + /* Select regulator voltage output Scale 1 mode to support system + * frequencies up to 168 MHz. + */ + + regval = getreg32(STM32_RCC_APB1ENR); + regval |= RCC_APB1ENR_PWREN; + putreg32(regval, STM32_RCC_APB1ENR); + + regval = getreg32(STM32_PWR_CR); + regval &= ~PWR_CR_VOS_MASK; + regval |= PWR_CR_VOS_SCALE_1; + putreg32(regval, STM32_PWR_CR); + + /* Set the HCLK source/divider */ + + regval = getreg32(STM32_RCC_CFGR); + regval &= ~RCC_CFGR_HPRE_MASK; + regval |= STM32_RCC_CFGR_HPRE; + putreg32(regval, STM32_RCC_CFGR); + + /* Set the PCLK2 divider */ + + regval = getreg32(STM32_RCC_CFGR); + regval &= ~RCC_CFGR_PPRE2_MASK; + regval |= STM32_RCC_CFGR_PPRE2; + putreg32(regval, STM32_RCC_CFGR); + + /* Set the PCLK1 divider */ + + regval = getreg32(STM32_RCC_CFGR); + regval &= ~RCC_CFGR_PPRE1_MASK; + regval |= STM32_RCC_CFGR_PPRE1; + putreg32(regval, STM32_RCC_CFGR); + +#ifdef CONFIG_RTC_HSECLOCK + /* Set the RTC clock divisor */ + + regval = getreg32(STM32_RCC_CFGR); + regval &= ~RCC_CFGR_RTCPRE_MASK; + regval |= RCC_CFGR_RTCPRE(HSE_DIVISOR); + putreg32(regval, STM32_RCC_CFGR); +#endif + + /* Set the PLL dividers and multipliers to configure the main PLL */ + +#ifdef STM32_BOARD_USEHSI + regval = (STM32_PLLCFG_PLLM | STM32_PLLCFG_PLLN |STM32_PLLCFG_PLLP | + RCC_PLLCFG_PLLSRC_HSI | STM32_PLLCFG_PLLQ); +#else /* if STM32_BOARD_USEHSE */ + regval = (STM32_PLLCFG_PLLM | STM32_PLLCFG_PLLN |STM32_PLLCFG_PLLP | + RCC_PLLCFG_PLLSRC_HSE | STM32_PLLCFG_PLLQ); +#endif + putreg32(regval, STM32_RCC_PLLCFG); + + /* Enable the main PLL */ + + regval = getreg32(STM32_RCC_CR); + regval |= RCC_CR_PLLON; + putreg32(regval, STM32_RCC_CR); + + /* Wait until the PLL is ready */ + + while ((getreg32(STM32_RCC_CR) & RCC_CR_PLLRDY) == 0) + { + } + + /* Enable the Over-drive to extend the clock frequency to 180 Mhz */ + + regval = getreg32(STM32_PWR_CR); + regval |= PWR_CR_ODEN; + putreg32(regval, STM32_PWR_CR); + while ((getreg32(STM32_PWR_CSR) & PWR_CSR_ODRDY) == 0) + { + } + + regval = getreg32(STM32_PWR_CR); + regval |= PWR_CR_ODSWEN; + putreg32(regval, STM32_PWR_CR); + while ((getreg32(STM32_PWR_CSR) & PWR_CSR_ODSWRDY) == 0) + { + } + + /* Enable FLASH prefetch, instruction cache, data cache, and 5 wait states */ + +#ifdef CONFIG_STM32F7_FLASH_PREFETCH + regval = (FLASH_ACR_LATENCY_5 | FLASH_ACR_ICEN | FLASH_ACR_DCEN | FLASH_ACR_PRFTEN); +#else + regval = (FLASH_ACR_LATENCY_5 | FLASH_ACR_ICEN | FLASH_ACR_DCEN); +#endif + putreg32(regval, STM32_FLASH_ACR); + + /* Select the main PLL as system clock source */ + + regval = getreg32(STM32_RCC_CFGR); + regval &= ~RCC_CFGR_SW_MASK; + regval |= RCC_CFGR_SW_PLL; + putreg32(regval, STM32_RCC_CFGR); + + /* Wait until the PLL source is used as the system clock source */ + + while ((getreg32(STM32_RCC_CFGR) & RCC_CFGR_SWS_MASK) != RCC_CFGR_SWS_PLL) + { + } + +#ifdef CONFIG_STM32F7_LTDC + /* Configure PLLSAI */ + + regval = getreg32(STM32_RCC_PLLSAICFGR); + regval |= (STM32_RCC_PLLSAICFGR_PLLSAIN + | STM32_RCC_PLLSAICFGR_PLLSAIR + | STM32_RCC_PLLSAICFGR_PLLSAIQ); + putreg32(regval, STM32_RCC_PLLSAICFGR); + + regval = getreg32(STM32_RCC_DCKCFGR); + regval |= STM32_RCC_DCKCFGR_PLLSAIDIVR; + putreg32(regval, STM32_RCC_DCKCFGR); + + /* Enable PLLSAI */ + + regval = getreg32(STM32_RCC_CR); + regval |= RCC_CR_PLLSAION; + putreg32(regval, STM32_RCC_CR); + + /* Wait until the PLLSAI is ready */ + + while ((getreg32(STM32_RCC_CR) & RCC_CR_PLLSAIRDY) == 0) + { + } +#endif + +#if defined(CONFIG_STM32F7_IWDG) || defined(CONFIG_RTC_LSICLOCK) + /* Low speed internal clock source LSI */ + + stm32_rcc_enablelsi(); +#endif + +#if defined(CONFIG_RTC_LSECLOCK) + /* Low speed external clock source LSE + * + * TODO: There is another case where the LSE needs to + * be enabled: if the MCO1 pin selects LSE as source. + */ + + stm32_rcc_enablelse(); +#endif + } +} +#endif + +/**************************************************************************** + * Name: rcc_enableperiphals + ****************************************************************************/ + +static inline void rcc_enableperipherals(void) +{ + rcc_enableahb1(); + rcc_enableahb2(); + rcc_enableahb3(); + rcc_enableapb1(); + rcc_enableapb2(); +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/