From 81fdc4983e33ef01935a9bf01187951aad34e2ac Mon Sep 17 00:00:00 2001 From: Chaotian Jing Date: Mon, 16 Oct 2017 09:46:39 +0800 Subject: [PATCH 160/224] 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 --- drivers/mmc/host/mtk-sd.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/mmc/host/mtk-sd.c +++ b/drivers/mmc/host/mtk-sd.c @@ -1552,7 +1552,8 @@ static int msdc_tune_response(struct mmc } 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);