From 0b330e38589766556462c13988ebc83ef24964e5 Mon Sep 17 00:00:00 2001 From: Dong Aisheng Date: Tue, 12 Jul 2016 15:46:18 +0800 Subject: [PATCH] mmc: sdhci-esdhc-imx: enable hw auto retuning for STD_TUNING Enable HW auto retuning when set SDHCI_CTRL_EXEC_TUNING and clear it when clear SDHCI_CTRL_TUNED_CLK. Acked-by: Adrian Hunter Signed-off-by: Dong Aisheng Signed-off-by: Ulf Hansson --- drivers/mmc/host/sdhci-esdhc-imx.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index b47dad1..c90aa07 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -45,6 +45,7 @@ #define ESDHC_MIX_CTRL_AC23EN (1 << 7) #define ESDHC_MIX_CTRL_EXE_TUNE (1 << 22) #define ESDHC_MIX_CTRL_SMPCLK_SEL (1 << 23) +#define ESDHC_MIX_CTRL_AUTO_TUNE_EN (1 << 24) #define ESDHC_MIX_CTRL_FBCLK_SEL (1 << 25) #define ESDHC_MIX_CTRL_HS400_EN (1 << 26) /* Bits 3 and 6 are not SDHCI standard definitions */ @@ -485,11 +486,13 @@ static void esdhc_writew_le(struct sdhci_host *host, u16 val, int reg) } else { v &= ~ESDHC_MIX_CTRL_SMPCLK_SEL; m &= ~ESDHC_MIX_CTRL_FBCLK_SEL; + m &= ~ESDHC_MIX_CTRL_AUTO_TUNE_EN; } if (val & SDHCI_CTRL_EXEC_TUNING) { v |= ESDHC_MIX_CTRL_EXE_TUNE; m |= ESDHC_MIX_CTRL_FBCLK_SEL; + m |= ESDHC_MIX_CTRL_AUTO_TUNE_EN; tuning_ctrl = readl(host->ioaddr + ESDHC_TUNING_CTRL); tuning_ctrl |= ESDHC_STD_TUNING_EN | ESDHC_TUNING_START_TAP_DEFAULT; if (imx_data->boarddata.tuning_start_tap) { -- 2.7.4