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Changes SDIO clock speed to 20MHz for the Matek H743 slim

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Signed-off-by: Charles Cross <charles@missionrobotics.us>
This commit is contained in:
Charles Cross
2022-02-13 10:10:23 -08:00
committed by David Sidrane
parent 26ea70e729
commit f9feb04f8b
1 changed files with 4 additions and 4 deletions
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boards/matek/h743-slim/nuttx-config/include/board.h
+4 -4
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@@ -284,17 +284,17 @@
#define STM32_SDMMC_INIT_CLKDIV (300 << STM32_SDMMC_CLKCR_CLKDIV_SHIFT) #define STM32_SDMMC_INIT_CLKDIV (300 << STM32_SDMMC_CLKCR_CLKDIV_SHIFT)
/* 25 MHz Max for now, 25 mHZ = PLL1Q/(2*div), div = PLL1Q/(2*freq) /* 20 MHz Max for now - more reliable on some boards than 25 MHz
* div = 4.8 = 240 / 50, So round up to 5 for default speed 24 MB/s * 20 MHz = PLL1Q/(2*div), div = PLL1Q/(2*freq), div = 6 = 240 / 40
*/ */
#if defined(CONFIG_STM32H7_SDMMC_XDMA) || defined(CONFIG_STM32H7_SDMMC_IDMA) #if defined(CONFIG_STM32H7_SDMMC_XDMA) || defined(CONFIG_STM32H7_SDMMC_IDMA)
# define STM32_SDMMC_MMCXFR_CLKDIV (5 << STM32_SDMMC_CLKCR_CLKDIV_SHIFT) # define STM32_SDMMC_MMCXFR_CLKDIV (6 << STM32_SDMMC_CLKCR_CLKDIV_SHIFT)
#else #else
# define STM32_SDMMC_MMCXFR_CLKDIV (100 << STM32_SDMMC_CLKCR_CLKDIV_SHIFT) # define STM32_SDMMC_MMCXFR_CLKDIV (100 << STM32_SDMMC_CLKCR_CLKDIV_SHIFT)
#endif #endif
#if defined(CONFIG_STM32H7_SDMMC_XDMA) || defined(CONFIG_STM32H7_SDMMC_IDMA) #if defined(CONFIG_STM32H7_SDMMC_XDMA) || defined(CONFIG_STM32H7_SDMMC_IDMA)
# define STM32_SDMMC_SDXFR_CLKDIV (5 << STM32_SDMMC_CLKCR_CLKDIV_SHIFT) # define STM32_SDMMC_MMCXFR_CLKDIV (6 << STM32_SDMMC_CLKCR_CLKDIV_SHIFT)
#else #else
# define STM32_SDMMC_SDXFR_CLKDIV (100 << STM32_SDMMC_CLKCR_CLKDIV_SHIFT) # define STM32_SDMMC_SDXFR_CLKDIV (100 << STM32_SDMMC_CLKCR_CLKDIV_SHIFT)
#endif #endif