2018-05-07 10:07:32 +00:00
|
|
|
From 81fdc4983e33ef01935a9bf01187951aad34e2ac Mon Sep 17 00:00:00 2001
|
|
|
|
|
From: Chaotian Jing <chaotian.jing@mediatek.com>
|
|
|
|
|
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 <chaotian.jing@mediatek.com>
|
|
|
|
|
Tested-by: Sean Wang <sean.wang@mediatek.com>
|
|
|
|
|
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
|
|
|
|
|
---
|
|
|
|
|
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
|
2020-01-03 23:36:43 +00:00
|
|
|
@@ -1552,7 +1552,8 @@ static int msdc_tune_response(struct mmc
|
2018-05-07 10:07:32 +00:00
|
|
|
}
|
|
|
|
|
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);
|
