arm64: dts: rockchip: Disable HS400 for mmc on rk3399-roc-pc

From: Markus Reichl
Date: Mon Nov 11 2019 - 04:51:18 EST


Working with rootfs on two 128GB mmcs on rk3399-roc-pc.

One (mmc name 128G72, one screw hole) works fine in HS400 mode.
Other (mmc name DJNB4R, firefly on pcb, two screw holes) gets lots of
mmc1: "running CQE recovery", even hangs with damaged fs,
when running under heavy load, e.g. compiling kernel.
Both run fine with HS200.

Disabling CQ with patch mmc: core: Add MMC Command Queue Support kernel parameter [0] did not help.
[0] https://gitlab.com/ayufan-repos/rock64/linux-mainline-kernel/commit/54e264154b87dfe32a8359b2726e2d5611adbaf3

Therefore I propose to disable HS400 mode on roc-pc for now.

Signed-off-by: Markus Reichl <m.reichl@xxxxxxxxxxxxx>
---
arch/arm64/boot/dts/rockchip/rk3399-roc-pc.dtsi | 2 --
1 file changed, 2 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-roc-pc.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-roc-pc.dtsi
index 29a50a083c42..33df95e384b4 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-roc-pc.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-roc-pc.dtsi
@@ -660,8 +660,6 @@

&sdhci {
bus-width = <8>;
- mmc-hs400-1_8v;
- mmc-hs400-enhanced-strobe;
non-removable;
status = "okay";
};
--
2.20.1