/************************************************************************************ * configs/stm32f746-ws/include/board.h * * Copyright (C) 2016 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * Author: Mark Olsson * * 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. * ************************************************************************************/ #ifndef __CONFIG_STM32F746_WS_INCLUDE_BOARD_H #define __CONFIG_STM32F746_WS_INCLUDE_BOARD_H /************************************************************************************ * Included Files ************************************************************************************/ #include #ifndef __ASSEMBLY__ # include #endif #ifdef __KERNEL__ #include "stm32_rcc.h" #ifdef CONFIG_STM32F7_SDMMC1 # include "stm32_sdmmc.h" #endif #endif /************************************************************************************ * Pre-processor Definitions ************************************************************************************/ /* Clocking *************************************************************************/ /* The STM32F7 Discovery board provides the following clock sources: * * X1: 24 MHz oscillator for USB OTG HS PHY and camera module (daughter board) * X2: 25 MHz oscillator for STM32F746NGH6 microcontroller and Ethernet PHY. * X3: 32.768 KHz crystal for STM32F746NGH6 embedded RTC * * So we have these clock source available within the STM32 * * HSI: 16 MHz RC factory-trimmed * LSI: 32 KHz RC * HSE: On-board crystal frequency is 25MHz * LSE: 32.768 kHz */ #define STM32_BOARD_XTAL 8000000ul #define STM32_HSI_FREQUENCY 16000000ul #define STM32_LSI_FREQUENCY 32000 #define STM32_HSE_FREQUENCY STM32_BOARD_XTAL #define STM32_LSE_FREQUENCY 32768 /* Main PLL Configuration. * * PLL source is HSE = 8,000,000 * * PLL_VCO = (STM32_HSE_FREQUENCY / PLLM) * PLLN * Subject to: * * 2 <= PLLM <= 63 * 192 <= PLLN <= 432 * 192 MHz <= PLL_VCO <= 432MHz * * SYSCLK = PLL_VCO / PLLP * Subject to * * PLLP = {2, 4, 6, 8} * SYSCLK <= 216 MHz * * USB OTG FS, SDMMC and RNG Clock = PLL_VCO / PLLQ * Subject to * The USB OTG FS requires a 48 MHz clock to work correctly. The SDMMC * and the random number generator need a frequency lower than or equal * to 48 MHz to work correctly. * * 2 <= PLLQ <= 15 */ /* Highest SYSCLK with USB OTG FS clock <= 48MHz * * PLL_VCO = (8,000,000 / 8) * 432 = 432 MHz * SYSCLK = 432 MHz / 2 = 216 MHz * USB OTG FS, SDMMC and RNG Clock = 432 MHz / 9 = 48 MHz */ #define STM32_PLLCFG_PLLM RCC_PLLCFG_PLLM(8) #define STM32_PLLCFG_PLLN RCC_PLLCFG_PLLN(432) #define STM32_PLLCFG_PLLP RCC_PLLCFG_PLLP_2 #define STM32_PLLCFG_PLLQ RCC_PLLCFG_PLLQ(9) #define STM32_VCO_FREQUENCY ((STM32_HSE_FREQUENCY / 8) * 432) #define STM32_SYSCLK_FREQUENCY (STM32_VCO_FREQUENCY / 2) #define STM32_OTGFS_FREQUENCY (STM32_VCO_FREQUENCY / 9) /* Configure factors for PLLSAI clock */ #define CONFIG_STM32F7_PLLSAI 1 #define STM32_RCC_PLLSAICFGR_PLLSAIN RCC_PLLSAICFGR_PLLSAIN(192) #define STM32_RCC_PLLSAICFGR_PLLSAIP RCC_PLLSAICFGR_PLLSAIP(2) #define STM32_RCC_PLLSAICFGR_PLLSAIQ RCC_PLLSAICFGR_PLLSAIQ(2) #define STM32_RCC_PLLSAICFGR_PLLSAIR RCC_PLLSAICFGR_PLLSAIR(2) /* Configure Dedicated Clock Configuration Register */ #define STM32_RCC_DCKCFGR1_PLLI2SDIVQ RCC_DCKCFGR1_PLLI2SDIVQ(1) #define STM32_RCC_DCKCFGR1_PLLSAIDIVQ RCC_DCKCFGR1_PLLSAIDIVQ(1) #define STM32_RCC_DCKCFGR1_PLLSAIDIVR RCC_DCKCFGR1_PLLSAIDIVR(0) #define STM32_RCC_DCKCFGR1_SAI1SRC RCC_DCKCFGR1_SAI1SEL(0) #define STM32_RCC_DCKCFGR1_SAI2SRC RCC_DCKCFGR1_SAI2SEL(0) #define STM32_RCC_DCKCFGR1_TIMPRESRC 0 #define STM32_RCC_DCKCFGR1_DFSDM1SRC 0 #define STM32_RCC_DCKCFGR1_ADFSDM1SRC 0 /* Configure factors for PLLI2S clock */ #define CONFIG_STM32F7_PLLI2S 1 #define STM32_RCC_PLLI2SCFGR_PLLI2SN RCC_PLLI2SCFGR_PLLI2SN(192) #define STM32_RCC_PLLI2SCFGR_PLLI2SP RCC_PLLI2SCFGR_PLLI2SP(2) #define STM32_RCC_PLLI2SCFGR_PLLI2SQ RCC_PLLI2SCFGR_PLLI2SQ(2) #define STM32_RCC_PLLI2SCFGR_PLLI2SR RCC_PLLI2SCFGR_PLLI2SR(2) /* Configure Dedicated Clock Configuration Register 2 */ #define STM32_RCC_DCKCFGR2_USART1SRC RCC_DCKCFGR2_USART1SEL_APB #define STM32_RCC_DCKCFGR2_USART2SRC RCC_DCKCFGR2_USART2SEL_APB #define STM32_RCC_DCKCFGR2_UART4SRC RCC_DCKCFGR2_UART4SEL_APB #define STM32_RCC_DCKCFGR2_UART5SRC RCC_DCKCFGR2_UART5SEL_APB #define STM32_RCC_DCKCFGR2_USART6SRC RCC_DCKCFGR2_USART6SEL_APB #define STM32_RCC_DCKCFGR2_UART7SRC RCC_DCKCFGR2_UART7SEL_APB #define STM32_RCC_DCKCFGR2_UART8SRC RCC_DCKCFGR2_UART8SEL_APB #define STM32_RCC_DCKCFGR2_I2C1SRC RCC_DCKCFGR2_I2C1SEL_HSI #define STM32_RCC_DCKCFGR2_I2C2SRC RCC_DCKCFGR2_I2C2SEL_HSI #define STM32_RCC_DCKCFGR2_I2C3SRC RCC_DCKCFGR2_I2C3SEL_HSI #define STM32_RCC_DCKCFGR2_I2C4SRC RCC_DCKCFGR2_I2C4SEL_HSI #define STM32_RCC_DCKCFGR2_LPTIM1SRC RCC_DCKCFGR2_LPTIM1SEL_APB #define STM32_RCC_DCKCFGR2_CECSRC RCC_DCKCFGR2_CECSEL_HSI #define STM32_RCC_DCKCFGR2_CK48MSRC RCC_DCKCFGR2_CK48MSEL_PLLSAI #define STM32_RCC_DCKCFGR2_SDMMCSRC RCC_DCKCFGR2_SDMMCSEL_48MHZ #define STM32_RCC_DCKCFGR2_SDMMC2SRC RCC_DCKCFGR2_SDMMC2SEL_48MHZ /* Several prescalers allow the configuration of the two AHB buses, the * high-speed APB (APB2) and the low-speed APB (APB1) domains. The maximum * frequency of the two AHB buses is 216 MHz while the maximum frequency of * the high-speed APB domains is 108 MHz. The maximum allowed frequency of * the low-speed APB domain is 54 MHz. */ /* AHB clock (HCLK) is SYSCLK (216 MHz) */ #define STM32_RCC_CFGR_HPRE RCC_CFGR_HPRE_SYSCLK /* HCLK = SYSCLK / 1 */ #define STM32_HCLK_FREQUENCY STM32_SYSCLK_FREQUENCY #define STM32_BOARD_HCLK STM32_HCLK_FREQUENCY /* same as above, to satisfy compiler */ /* APB1 clock (PCLK1) is HCLK/4 (54 MHz) */ #define STM32_RCC_CFGR_PPRE1 RCC_CFGR_PPRE1_HCLKd4 /* PCLK1 = HCLK / 4 */ #define STM32_PCLK1_FREQUENCY (STM32_HCLK_FREQUENCY/4) /* Timers driven from APB1 will be twice PCLK1 */ #define STM32_APB1_TIM2_CLKIN (2*STM32_PCLK1_FREQUENCY) #define STM32_APB1_TIM3_CLKIN (2*STM32_PCLK1_FREQUENCY) #define STM32_APB1_TIM4_CLKIN (2*STM32_PCLK1_FREQUENCY) #define STM32_APB1_TIM5_CLKIN (2*STM32_PCLK1_FREQUENCY) #define STM32_APB1_TIM6_CLKIN (2*STM32_PCLK1_FREQUENCY) #define STM32_APB1_TIM7_CLKIN (2*STM32_PCLK1_FREQUENCY) #define STM32_APB1_TIM12_CLKIN (2*STM32_PCLK1_FREQUENCY) #define STM32_APB1_TIM13_CLKIN (2*STM32_PCLK1_FREQUENCY) #define STM32_APB1_TIM14_CLKIN (2*STM32_PCLK1_FREQUENCY) /* APB2 clock (PCLK2) is HCLK/2 (108MHz) */ #define STM32_RCC_CFGR_PPRE2 RCC_CFGR_PPRE2_HCLKd2 /* PCLK2 = HCLK / 2 */ #define STM32_PCLK2_FREQUENCY (STM32_HCLK_FREQUENCY/2) /* Timers driven from APB2 will be twice PCLK2 */ #define STM32_APB2_TIM1_CLKIN (2*STM32_PCLK2_FREQUENCY) #define STM32_APB2_TIM8_CLKIN (2*STM32_PCLK2_FREQUENCY) #define STM32_APB2_TIM9_CLKIN (2*STM32_PCLK2_FREQUENCY) #define STM32_APB2_TIM10_CLKIN (2*STM32_PCLK2_FREQUENCY) #define STM32_APB2_TIM11_CLKIN (2*STM32_PCLK2_FREQUENCY) /* FLASH wait states * * --------- ---------- ----------- * VDD MAX SYSCLK WAIT STATES * --------- ---------- ----------- * 1.7-2.1 V 180 MHz 8 * 2.1-2.4 V 216 MHz 9 * 2.4-2.7 V 216 MHz 8 * 2.7-3.6 V 216 MHz 7 * --------- ---------- ----------- */ #define BOARD_FLASH_WAITSTATES 7 /* Alternate function pin selections ************************************************/ /* USART6: * * These configurations assume that you are using a standard Arduio RS-232 shield * with the serial interface with RX on pin D0 and TX on pin D1: * * -------- --------------- * STM32F7 * ARDUIONO FUNCTION GPIO * -- ----- --------- ----- * DO RX USART6_RX PC7 * D1 TX USART6_TX PC6 * -- ----- --------- ----- */ #define GPIO_USART6_RX GPIO_USART6_RX_1 #define GPIO_USART6_TX GPIO_USART6_TX_1 #define GPIO_SPI1_SCK GPIO_SPI1_SCK_1 #define GPIO_SPI1_MISO GPIO_SPI1_MISO_1 #define GPIO_SPI1_MOSI GPIO_SPI1_MOSI_1 #define GPIO_I2C1_SCL GPIO_I2C1_SCL_1 #define GPIO_I2C1_SDA GPIO_I2C1_SDA_1 /* SDMMC */ /* Stream selections are arbitrary for now but might become important in the future * if we set aside more DMA channels/streams. * * SDIO DMA * DMAMAP_SDMMC1_1 = Channel 4, Stream 3 * DMAMAP_SDMMC1_2 = Channel 4, Stream 6 */ #define DMAMAP_SDMMC1 DMAMAP_SDMMC1_1 /* SDIO dividers. Note that slower clocking is required when DMA is disabled * in order to avoid RX overrun/TX underrun errors due to delayed responses * to service FIFOs in interrupt driven mode. These values have not been * tuned!!! * * SDIOCLK=48MHz, SDIO_CK=SDIOCLK/(118+2)=400 KHz */ #define STM32_SDMMC_INIT_CLKDIV (118 << STM32_SDMMC_CLKCR_CLKDIV_SHIFT) /* DMA ON: SDIOCLK=48MHz, SDIO_CK=SDIOCLK/(1+2)=16 MHz * DMA OFF: SDIOCLK=48MHz, SDIO_CK=SDIOCLK/(2+2)=12 MHz */ #ifdef CONFIG_SDIO_DMA # define STM32_SDMMC_MMCXFR_CLKDIV (1 << STM32_SDMMC_CLKCR_CLKDIV_SHIFT) #else # define STM32_SDMMC_MMCXFR_CLKDIV (2 << STM32_SDMMC_CLKCR_CLKDIV_SHIFT) #endif /* DMA ON: SDIOCLK=48MHz, SDIO_CK=SDIOCLK/(1+2)=16 MHz * DMA OFF: SDIOCLK=48MHz, SDIO_CK=SDIOCLK/(2+2)=12 MHz */ #ifdef CONFIG_SDIO_DMA # define STM32_SDMMC_SDXFR_CLKDIV (1 << STM32_SDMMC_CLKCR_CLKDIV_SHIFT) #else # define STM32_SDMMC_SDXFR_CLKDIV (2 << STM32_SDMMC_CLKCR_CLKDIV_SHIFT) #endif #endif /* __CONFIG_STM32F746_WS_INCLUDE_BOARD_H */