From 57f4b6f83974b17e0aae04e17f9d95a5659ac88b Mon Sep 17 00:00:00 2001
From: Yann Gautier <yann.gautier@st.com>
Date: Fri, 16 Aug 2019 16:49:41 +0200
Subject: [PATCH] mmc: increase delay between ACMD41 retries
In the SD Specification, Power Up Diagram of Card figure, the Timeout
value for initialization process (ACMD41 command retries) is 1 second.
Align to match MMC cards (in mmc_send_op_cond()) and Linux kernel code,
and set the delay between ACMD41 command retries to 10ms.
Change-Id: I2e07cb9944e7d7b72f2d4b13e0505e6751458091
Signed-off-by: Yann Gautier <yann.gautier@st.com>
---
drivers/mmc/mmc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index db6f3f9e4..b5f6a10d3 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -361,7 +361,7 @@ static int sd_send_op_cond(void)
return 0;
}
- mdelay(1);
+ mdelay(10);
}
ERROR("ACMD41 failed after %d retries\n", SEND_OP_COND_MAX_RETRIES);
--
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