From: Ruixuan Li <ruixuan.li@amlogic.com>
Date: Wed, 31 Oct 2018 06:41:58 +0000 (+0800)
Subject: emmc: Modify delay of command line to 1/4 command window [1/1]
X-Git-Tag: khadas-vims-v0.9.6-release~1171
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9d19ae4ae8ca343be5109ba6805d311552712ecc;p=platform%2Fkernel%2Flinux-amlogic.git

emmc: Modify delay of command line to 1/4 command window [1/1]

PD#SWPL-1184

Problem:
emmc data crc error

Solution:
Modify delay of command line

Verify:
A113d_s400

Change-Id: I7211da9da75569aebaf0c2790e3134e88a6f3077
Signed-off-by: Ruixuan Li <ruixuan.li@amlogic.com>
---

diff --git a/drivers/amlogic/mmc/aml_sd_emmc_v3.c b/drivers/amlogic/mmc/aml_sd_emmc_v3.c
index a651193..fac60fb 100644
--- a/drivers/amlogic/mmc/aml_sd_emmc_v3.c
+++ b/drivers/amlogic/mmc/aml_sd_emmc_v3.c
@@ -918,7 +918,7 @@ static unsigned int get_emmc_cmd_win(struct mmc_host *mmc)
 		cur_size = -1;
 	}
 	delay2 &= ~(0x3f << 24);
-	delay2 |= ((best_start + best_size / 2) << 24);
+	delay2 |= ((best_start + best_size / 4) << 24);
 	writel(delay2, host->base + SD_EMMC_DELAY2_V3);
 	emmc_eyetest_log(mmc, 9);
 	return max;