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configs/lpcxpresso-lpc54628: Fix SD/MMC clock divisor.

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This commit is contained in:
Gregory Nutt
2017-12-19 12:43:44 -06:00
parent ba1301a43a
commit a8933f96bd
2 changed files with 6 additions and 2 deletions
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arch/arm/src/lpc54xx/lpc54_sdmmc.c
+1 -1
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@@ -1309,7 +1309,7 @@ static void lpc54_clock(FAR struct sdio_dev_s *dev, enum sdio_clock_e rate)
lpc54_setclock(clkdiv); lpc54_setclock(clkdiv);
/* Enable disable clock */ /* Enable the new clock */
lpc54_sdcard_clock(enabled); lpc54_sdcard_clock(enabled);
} }
configs/lpcxpresso-lpc54628/include/board.h
+5 -1
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@@ -196,10 +196,14 @@
/* SD/MMC or SDIO interface /* SD/MMC or SDIO interface
* *
* NOTE: The SDIO function clock to the interface can be up to 50 MHZ. * NOTE: The SDIO function clock to the interface can be up to 50 MHZ.
* Example: BOARD_MAIN_CLK=220MHz, CLKDIV=5
*/ */
#define BOARD_SDMMC_MAXFREQ 50000000
#define BOARD_SDMMC_CEIL(a,b) (((a) + (b) - 1) / (b))
#define BOARD_SDMMC_CLKSRC SYSCON_SDIOCLKSEL_MAINCLK #define BOARD_SDMMC_CLKSRC SYSCON_SDIOCLKSEL_MAINCLK
#define BOARD_SDMMC_CLKDIV (BOARD_MAIN_CLK / 50000000) #define BOARD_SDMMC_CLKDIV BOARD_SDMMC_CEIL(BOARD_MAIN_CLK, BOARD_SDMMC_MAXFREQ)
#define BOARD_SDMMC_FREQUENCY (BOARD_MAIN_CLK / BOARD_SDMMC_CLKDIV) #define BOARD_SDMMC_FREQUENCY (BOARD_MAIN_CLK / BOARD_SDMMC_CLKDIV)
/* LED definitions *********************************************************/ /* LED definitions *********************************************************/