From 19c3a0ef65adf090cb592dfe3e575f40322c88d8 Mon Sep 17 00:00:00 2001 From: yangbo lu Date: Thu, 20 Apr 2017 16:14:40 +0800 Subject: mmc: sdhci-of-esdhc: add peripheral clock support eSDHC could select peripheral clock or platform clock as clock source by the PCS bit of eSDHC Control Register, and this bit couldn't be reset by software reset for all. In default, the platform clock is used. But we have to use peripheral clock since it has a higher frequency to support eMMC HS200 mode and SD UHS-I mode. This patch is to add peripheral clock support and use it instead of platform clock if it's declared in eSDHC dts node. Signed-off-by: Yangbo Lu Acked-by: Adrian Hunter Signed-off-by: Ulf Hansson --- drivers/mmc/host/sdhci-esdhc.h | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/mmc/host/sdhci-esdhc.h') diff --git a/drivers/mmc/host/sdhci-esdhc.h b/drivers/mmc/host/sdhci-esdhc.h index ece8b37e51dd..5343fc062e22 100644 --- a/drivers/mmc/host/sdhci-esdhc.h +++ b/drivers/mmc/host/sdhci-esdhc.h @@ -54,6 +54,7 @@ /* Control Register for DMA transfer */ #define ESDHC_DMA_SYSCTL 0x40c +#define ESDHC_PERIPHERAL_CLK_SEL 0x00080000 #define ESDHC_DMA_SNOOP 0x00000040 #endif /* _DRIVERS_MMC_SDHCI_ESDHC_H */ -- cgit v1.2.3