summaryrefslogtreecommitdiffstats
path: root/drivers/mmc
diff options
context:
space:
mode:
authorDong Aisheng <aisheng.dong@nxp.com>2016-07-12 15:46:18 +0800
committerUlf Hansson <ulf.hansson@linaro.org>2016-07-25 10:34:56 +0200
commit0b330e38589766556462c13988ebc83ef24964e5 (patch)
tree2604be59bdf29c48a803949071b22aab93f6940b /drivers/mmc
parentf37b20ebc4bc7c41e6fe1f4af6a62e9de70b771b (diff)
downloadlinux-0b330e38589766556462c13988ebc83ef24964e5.tar.bz2
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>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/host/sdhci-esdhc-imx.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index b47dad15fa3e..c90aa07b106f 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) {