diff options
| author | Haibo Chen | 2015-11-10 17:43:30 +0800 |
|---|---|---|
| committer | Ulf Hansson | 2015-12-22 11:32:09 +0100 |
| commit | 260ecb3c915fae3d67bf0378016ae68929be3b0e (patch) | |
| tree | 1499e8b9746f9ef392969b15bd302fc52f3e219f /drivers/mmc/host/sdhci-esdhc-imx.c | |
| parent | 27cbd7e815a8e223ff7c4fe56daca724101288ac (diff) | |
mmc: sdhci-esdhc-imx: correct the tuning-step setting
Here we use '|=' to set the tuning-step, but before that, we should
clear the tuning-step, otherwise we could got the wrong setting.
Signed-off-by: Haibo Chen <haibo.chen@freescale.com>
Acked-by: Dong Aisheng <aisheng.dong@freescale.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/sdhci-esdhc-imx.c')
| -rw-r--r-- | drivers/mmc/host/sdhci-esdhc-imx.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index 1f1582f6cccb..f25f29253595 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -76,6 +76,7 @@ #define ESDHC_STD_TUNING_EN (1 << 24) /* NOTE: the minimum valid tuning start tap for mx6sl is 1 */ #define ESDHC_TUNING_START_TAP 0x1 +#define ESDHC_TUNING_STEP_MASK 0x00070000 #define ESDHC_TUNING_STEP_SHIFT 16 /* pinctrl state */ @@ -489,9 +490,11 @@ static void esdhc_writew_le(struct sdhci_host *host, u16 val, int reg) m |= ESDHC_MIX_CTRL_FBCLK_SEL; tuning_ctrl = readl(host->ioaddr + ESDHC_TUNING_CTRL); tuning_ctrl |= ESDHC_STD_TUNING_EN | ESDHC_TUNING_START_TAP; - if (imx_data->boarddata.tuning_step) + if (imx_data->boarddata.tuning_step) { + tuning_ctrl &= ~ESDHC_TUNING_STEP_MASK; tuning_ctrl |= imx_data->boarddata.tuning_step << ESDHC_TUNING_STEP_SHIFT; - writel(tuning_ctrl, host->ioaddr + ESDHC_TUNING_CTRL); + } + writel(tuning_ctrl, host->ioaddr + ESDHC_TUNING_CTRL); } else { v &= ~ESDHC_MIX_CTRL_EXE_TUNE; } |