diff options
| author | Chaotian Jing <chaotian.jing@mediatek.com> | 2016-06-30 10:00:58 +0800 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2016-07-25 10:34:31 +0200 |
| commit | 5462ff39c4538b33e70a3c3fffa980c3acb27642 (patch) | |
| tree | 31a5a07f5f90c2c8e5cf191673d74f78e23b09bc /drivers/mmc/host/mtk-sd.c | |
| parent | faecf41106123ac62c06475ef3a61bc1dabfcad2 (diff) | |
mmc: mediatek: do not tune data for HS400 mode
for hs400 mode, should only tune DS delay, should not
tune PAD_TUNE for data path.
if eMMC will run at hs400 mode, do not tune data while
call ops->execute_tuning().
Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/mtk-sd.c')
| -rw-r--r-- | drivers/mmc/host/mtk-sd.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c index 5642f71f8bf0..4d7ce6586e57 100644 --- a/drivers/mmc/host/mtk-sd.c +++ b/drivers/mmc/host/mtk-sd.c @@ -326,6 +326,7 @@ struct msdc_host { unsigned char timing; bool vqmmc_enabled; u32 hs400_ds_delay; + bool hs400_mode; /* current eMMC will run at hs400 mode */ struct msdc_save_para save_para; /* used when gate HCLK */ }; @@ -1402,9 +1403,11 @@ static int msdc_execute_tuning(struct mmc_host *mmc, u32 opcode) dev_err(host->dev, "Tune response fail!\n"); return ret; } - ret = msdc_tune_data(mmc, opcode); - if (ret == -EIO) - dev_err(host->dev, "Tune data fail!\n"); + if (host->hs400_mode == false) { + ret = msdc_tune_data(mmc, opcode); + if (ret == -EIO) + dev_err(host->dev, "Tune data fail!\n"); + } return ret; } @@ -1412,6 +1415,7 @@ static int msdc_execute_tuning(struct mmc_host *mmc, u32 opcode) static int msdc_prepare_hs400_tuning(struct mmc_host *mmc, struct mmc_ios *ios) { struct msdc_host *host = mmc_priv(mmc); + host->hs400_mode = true; writel(host->hs400_ds_delay, host->base + PAD_DS_TUNE); return 0; |