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Fix writing to eMMC in U-Boot on Green (#3412)

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When Green starts, there is an error indicating the MMC write failed when
saving the bootstate:

  storing env...

  MMC write: dev # 0, block # 1214464, count 64 ... mmc write failed 0 blocks written: ERROR

This results in the boot count not being updated properly if the boot fails.

Seems to be a known issue for this platform, disabling the DDR52 mode (which is
the same what upstream does for other RK356x boards [1]) fixes the issues and
the bootstate is updated correctly.

[1] https://patchwork.ozlabs.org/project/uboot/patch/20240204205312.2342868-2-jonas@kwiboo.se/
This commit is contained in:
Jan Čermák 2024-06-12 21:52:36 +02:00 committed by GitHub
parent 6d77355c1c
commit 89533755bc
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1 changed files with 42 additions and 0 deletions
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42
buildroot-external/board/nabucasa/green/patches/uboot/0009-green-Do-not-use-eMMC-DDR52-mode.patch Normal file
View File

@ -0,0 +1,42 @@
From 766d53ce6143b7e5f09a5f478e328cf8a1f183d4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20=C4=8Cerm=C3=A1k?= <sairon@sairon.cz>
Date: Wed, 12 Jun 2024 15:20:46 +0200
Subject: [PATCH] green: Do not use eMMC DDR52 mode
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
There is a known issue on RK356x boards that the eMMC writing fails when
DDR52 mode is used. Disable this mode and other HS modes, keep only
HS200 which works reliably with the eMMC used on Green. For more details
see the upstream commit and mailing list discussion [1].
[1] https://patchwork.ozlabs.org/project/uboot/patch/20240204205312.2342868-2-jonas@kwiboo.se/
Signed-off-by: Jan Čermák <sairon@sairon.cz>
---
arch/arm/dts/rk3566-ha-green-u-boot.dtsi | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/arch/arm/dts/rk3566-ha-green-u-boot.dtsi b/arch/arm/dts/rk3566-ha-green-u-boot.dtsi
index 48d7b61513..8dc1585aac 100644
--- a/arch/arm/dts/rk3566-ha-green-u-boot.dtsi
+++ b/arch/arm/dts/rk3566-ha-green-u-boot.dtsi
@@ -71,10 +71,7 @@
&sdhci {
cap-mmc-highspeed;
- mmc-ddr-1_8v;
mmc-hs200-1_8v;
- mmc-hs400-1_8v;
- mmc-hs400-enhanced-strobe;
};
&sfc {
@@ -115,4 +112,4 @@
&vcc5v0_usb_host {
regulator-boot-on;
-};
\ No newline at end of file
+};