From da0295ff1db13765ad0da6cc7c2117f15c83b562 Mon Sep 17 00:00:00 2001 From: Dong Aisheng Date: Tue, 12 Jul 2016 15:46:19 +0800 Subject: [PATCH] mmc: sdhci-esdhc-imx: enable hw auto retuning for MAN_TUNING Indicating hw auto retuning support for mx6qdl in the fake caps_1 register and enable auto retuning in post_tuning process after tuning completes. Acked-by: Adrian Hunter Signed-off-by: Dong Aisheng Signed-off-by: Ulf Hansson --- drivers/mmc/host/sdhci-esdhc-imx.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index c90aa07b106f..ac2c83af7440 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -302,7 +302,8 @@ static u32 esdhc_readl_le(struct sdhci_host *host, int reg) /* imx6q/dl does not have cap_1 register, fake one */ val = SDHCI_SUPPORT_DDR50 | SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 - | SDHCI_USE_SDR50_TUNING; + | SDHCI_USE_SDR50_TUNING + | (SDHCI_TUNING_MODE_3 << SDHCI_RETUNING_MODE_SHIFT); if (imx_data->socdata->flags & ESDHC_FLAG_HS400) val |= SDHCI_SUPPORT_HS400; @@ -472,10 +473,13 @@ static void esdhc_writew_le(struct sdhci_host *host, u16 val, int reg) writel(new_val, host->ioaddr + ESDHC_VENDOR_SPEC); if (imx_data->socdata->flags & ESDHC_FLAG_MAN_TUNING) { new_val = readl(host->ioaddr + ESDHC_MIX_CTRL); - if (val & SDHCI_CTRL_TUNED_CLK) + if (val & SDHCI_CTRL_TUNED_CLK) { new_val |= ESDHC_MIX_CTRL_SMPCLK_SEL; - else + new_val |= ESDHC_MIX_CTRL_AUTO_TUNE_EN; + } else { new_val &= ~ESDHC_MIX_CTRL_SMPCLK_SEL; + new_val &= ~ESDHC_MIX_CTRL_AUTO_TUNE_EN; + } writel(new_val , host->ioaddr + ESDHC_MIX_CTRL); } else if (imx_data->socdata->flags & ESDHC_FLAG_STD_TUNING) { u32 v = readl(host->ioaddr + SDHCI_ACMD12_ERR); @@ -761,6 +765,7 @@ static void esdhc_post_tuning(struct sdhci_host *host) reg = readl(host->ioaddr + ESDHC_MIX_CTRL); reg &= ~ESDHC_MIX_CTRL_EXE_TUNE; + reg |= ESDHC_MIX_CTRL_AUTO_TUNE_EN; writel(reg, host->ioaddr + ESDHC_MIX_CTRL); } -- 2.20.1