From bf50be835ed1c0e2875ff7672381944eeab8695d Mon Sep 17 00:00:00 2001 From: Yangbo Lu <yangbo.lu@freescale.com> Date: Thu, 17 Sep 2015 10:27:48 +0800 Subject: [PATCH] mmc: fsl_esdhc: enable EVDD automatic control for SD/MMC Legacy Adapter Card When detecting SDHC Adapter Card Type 2(SD/MMC Legacy Adapter Card), enable EVDD automatic control via SDHC_VS. This could support SD card IO voltage switching for UHS-1 speed mode. Signed-off-by: Yangbo Lu <yangbo.lu@freescale.com> Reviewed-by: York Sun <yorksun@freescale.com> --- board/freescale/common/qixis.h | 3 +++ drivers/mmc/fsl_esdhc.c | 3 +++ 2 files changed, 6 insertions(+) diff --git a/board/freescale/common/qixis.h b/board/freescale/common/qixis.h index 450cd0ddbd..0aa56a090e 100644 --- a/board/freescale/common/qixis.h +++ b/board/freescale/common/qixis.h @@ -125,10 +125,13 @@ void qixis_write_i2c(unsigned int reg, u8 value); #define QIXIS_ESDHC_ADAPTER_TYPE_MMC 0x5 /* MMC Card */ #define QIXIS_ESDHC_ADAPTER_TYPE_SD 0x6 /* SD Card Rev2.0 3.0 */ #define QIXIS_ESDHC_NO_ADAPTER 0x7 /* No Card is Present*/ + #define QIXIS_SDCLKIN 0x08 #define QIXIS_SDCLKOUT 0x02 #define QIXIS_DAT5_6_7 0X02 #define QIXIS_DAT4 0X01 + +#define QIXIS_EVDD_BY_SDHC_VS 0x0c #endif #endif diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c index 5c20627c1c..c5054d66bd 100644 --- a/drivers/mmc/fsl_esdhc.c +++ b/drivers/mmc/fsl_esdhc.c @@ -753,6 +753,9 @@ void mmc_adapter_card_type_ident(void) QIXIS_WRITE(brdcfg[5], value); break; case QIXIS_ESDHC_ADAPTER_TYPE_SDMMC_LEGACY: + value = QIXIS_READ(pwr_ctl[1]); + value |= QIXIS_EVDD_BY_SDHC_VS; + QIXIS_WRITE(pwr_ctl[1], value); break; case QIXIS_ESDHC_ADAPTER_TYPE_EMMC44: value = QIXIS_READ(brdcfg[5]); -- 2.39.5