This is a note to let you know that I've just added the patch titled
arm64: dts: rockchip: fix rk3328 sdmmc0 write errors
to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm64-dts-rockchip-fix-rk3328-sdmmc0-write-errors.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 09f91381fa5de1d44bc323d8bf345f5d57b3d9b5 Mon Sep 17 00:00:00 2001
From: Peter Geis <pgwipeout@xxxxxxxxx>
Date: Wed, 13 Mar 2019 19:02:30 +0000
Subject: arm64: dts: rockchip: fix rk3328 sdmmc0 write errors
From: Peter Geis <pgwipeout@xxxxxxxxx>
commit 09f91381fa5de1d44bc323d8bf345f5d57b3d9b5 upstream.
Various rk3328 based boards experience occasional sdmmc0 write errors.
This is due to the rk3328.dtsi tx drive levels being set to 4ma, vs
8ma per the rk3328 datasheet default settings.
Fix this by setting the tx signal pins to 8ma.
Inspiration from tonymac32's patch,
https://github.com/ayufan-rock64/linux-kernel/commit/dc1212b347e0da17c5460bcc0a56b07d02bac3f8
Fixes issues on the rk3328-roc-cc and the rk3328-rock64 (as per the
above commit message).
Tested on the rk3328-roc-cc board.
Fixes: 52e02d377a72 ("arm64: dts: rockchip: add core dtsi file for RK3328 SoCs")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Peter Geis <pgwipeout@xxxxxxxxx>
Signed-off-by: Heiko Stuebner <heiko@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm64/boot/dts/rockchip/rk3328.dtsi | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
--- a/arch/arm64/boot/dts/rockchip/rk3328.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3328.dtsi
@@ -1333,11 +1333,11 @@
sdmmc0 {
sdmmc0_clk: sdmmc0-clk {
- rockchip,pins = <1 RK_PA6 1 &pcfg_pull_none_4ma>;
+ rockchip,pins = <1 RK_PA6 1 &pcfg_pull_none_8ma>;
};
sdmmc0_cmd: sdmmc0-cmd {
- rockchip,pins = <1 RK_PA4 1 &pcfg_pull_up_4ma>;
+ rockchip,pins = <1 RK_PA4 1 &pcfg_pull_up_8ma>;
};
sdmmc0_dectn: sdmmc0-dectn {
@@ -1349,14 +1349,14 @@
};
sdmmc0_bus1: sdmmc0-bus1 {
- rockchip,pins = <1 RK_PA0 1 &pcfg_pull_up_4ma>;
+ rockchip,pins = <1 RK_PA0 1 &pcfg_pull_up_8ma>;
};
sdmmc0_bus4: sdmmc0-bus4 {
- rockchip,pins = <1 RK_PA0 1 &pcfg_pull_up_4ma>,
- <1 RK_PA1 1 &pcfg_pull_up_4ma>,
- <1 RK_PA2 1 &pcfg_pull_up_4ma>,
- <1 RK_PA3 1 &pcfg_pull_up_4ma>;
+ rockchip,pins = <1 RK_PA0 1 &pcfg_pull_up_8ma>,
+ <1 RK_PA1 1 &pcfg_pull_up_8ma>,
+ <1 RK_PA2 1 &pcfg_pull_up_8ma>,
+ <1 RK_PA3 1 &pcfg_pull_up_8ma>;
};
sdmmc0_gpio: sdmmc0-gpio {
Patches currently in stable-queue which might be from pgwipeout@xxxxxxxxx are
queue-4.14/arm64-dts-rockchip-fix-rk3328-sdmmc0-write-errors.patch
