From: Chaotian Jing Date: Mon, 16 Oct 2017 01:46:39 +0000 (+0800) Subject: mmc: mediatek: perfer to use rise edge latching for cmd line X-Git-Tag: v4.15-rc1~170^2~11 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=6b10c9abfbceaf94ef227d98317020c557996186;p=linux.git 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 Tested-by: Sean Wang Signed-off-by: Ulf Hansson --- 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);