diff options
| author | Chaotian Jing <chaotian.jing@mediatek.com> | 2017-10-16 03:46:39 +0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2017-11-02 15:20:27 +0100 |
| commit | 6b10c9abfbceaf94ef227d98317020c557996186 (patch) | |
| tree | bda041dd39246dd47f4623384badc313e2c9c26a | |
| parent | mmc: mediatek: improve eMMC hs400 mode read performance (diff) | |
| download | linux-6b10c9abfbceaf94ef227d98317020c557996186.tar.xz linux-6b10c9abfbceaf94ef227d98317020c557996186.zip | |
mmc: mediatek: perfer to use rise edge latching for cmd line
data lines have applied to perfer to use rise edge, also need
apply it to cmd line.
Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
Tested-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
| -rw-r--r-- | drivers/mmc/host/mtk-sd.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c index 3247a5aed7d8..6457a7d8880f 100644 --- a/drivers/mmc/host/mtk-sd.c +++ b/drivers/mmc/host/mtk-sd.c @@ -1550,7 +1550,8 @@ static int msdc_tune_response(struct mmc_host *mmc, u32 opcode) } final_rise_delay = get_best_delay(host, rise_delay); /* if rising edge has enough margin, then do not scan falling edge */ - if (final_rise_delay.maxlen >= 12 && final_rise_delay.start < 4) + if (final_rise_delay.maxlen >= 12 || + (final_rise_delay.start == 0 && final_rise_delay.maxlen >= 4)) goto skip_fall; sdr_set_bits(host->base + MSDC_IOCON, MSDC_IOCON_RSPL); |