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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 <adrian.hunter@intel.com> Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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@ -45,6 +45,7 @@
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#define ESDHC_MIX_CTRL_AC23EN (1 << 7)
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#define ESDHC_MIX_CTRL_EXE_TUNE (1 << 22)
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#define ESDHC_MIX_CTRL_SMPCLK_SEL (1 << 23)
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#define ESDHC_MIX_CTRL_AUTO_TUNE_EN (1 << 24)
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#define ESDHC_MIX_CTRL_FBCLK_SEL (1 << 25)
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#define ESDHC_MIX_CTRL_HS400_EN (1 << 26)
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/* Bits 3 and 6 are not SDHCI standard definitions */
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@ -485,11 +486,13 @@ static void esdhc_writew_le(struct sdhci_host *host, u16 val, int reg)
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} else {
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v &= ~ESDHC_MIX_CTRL_SMPCLK_SEL;
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m &= ~ESDHC_MIX_CTRL_FBCLK_SEL;
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m &= ~ESDHC_MIX_CTRL_AUTO_TUNE_EN;
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}
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if (val & SDHCI_CTRL_EXEC_TUNING) {
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v |= ESDHC_MIX_CTRL_EXE_TUNE;
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m |= ESDHC_MIX_CTRL_FBCLK_SEL;
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m |= ESDHC_MIX_CTRL_AUTO_TUNE_EN;
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tuning_ctrl = readl(host->ioaddr + ESDHC_TUNING_CTRL);
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tuning_ctrl |= ESDHC_STD_TUNING_EN | ESDHC_TUNING_START_TAP_DEFAULT;
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if (imx_data->boarddata.tuning_start_tap) {
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