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u-boot-iot2050: Add a temporary workaround for the SD Card issue #567

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merged 1 commit into from
Nov 8, 2024
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u-boot-iot2050: Add a temporary workaround for the SD Card issue #567

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40 changes: 40 additions & 0 deletions recipes-bsp/u-boot/files/0014-driver-iot2050-Add-a-temporary-workaround-for-the-SD.patch
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Original file line number Diff line number Diff line change
@@ -0,0 +1,40 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Li Hua Qian <huaqian.li@siemens.com>
Date: Fri, 8 Nov 2024 10:23:52 +0800
Subject: [PATCH] driver: iot2050: Add a temporary workaround for the SD Card
issue

After approximately 2 months of operation, the device may fail to detect
the SD Card when rebooting. This commit provides a temporary workaround to
bypass the SD Card issue.

TODO: Implement a permanent solution for SD Card detection issues.

Signed-off-by: Li Hua Qian <huaqian.li@siemens.com>
---
drivers/mmc/mmc.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index dff0ff89a801..99a92f44bef4 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -651,8 +651,16 @@ static int sd_send_op_cond(struct mmc *mmc, bool uhs_en)
if (cmd.response[0] & OCR_BUSY)
break;

- if (timeout-- <= 0)
- return -EOPNOTSUPP;
+ /*
+ * TODO: Implement a permanent solution for the SD Card detection issues.
+ * After approximately 2 months of operation, the device may fail to
+ * detect the SD when rebooting. Here provides a temporary workaround
+ * to bypass the issue.
+ */
+ if (timeout-- <= 0) {
+ printf("mmc: SD Card is busy, continue booting\n");
+ break; //return -EOPNOTSUPP;
+ }

udelay(1000);
}
1 change: 1 addition & 0 deletions recipes-bsp/u-boot/u-boot-iot2050_2023.10.bb
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Expand Up @@ -25,6 +25,7 @@ SRC_URI += " \
file://0011-arm-dts-iot2050-Disable-lock-step-mode-for-all-iot20.patch \
file://0012-qspi-iot2050-Add-temporary-workaround-for-the-QSPI-i.patch \
file://0013-driver-iot2050-Add-a-temporary-workaround-for-the-eMMC.patch \
file://0014-driver-iot2050-Add-a-temporary-workaround-for-the-SD.patch \
"

SRC_URI[sha256sum] = "e00e6c6f014e046101739d08d06f328811cebcf5ae101348f409cbbd55ce6900"
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