arm64: dts: rockchip: slow down emmc freq for rock 5 itx

The current max-frequency 200000000 of emmc is not stable. When doing
heavy write there will be I/O Error. After setting max-frequency to
150000000 the emmc is stable under write.

Also remove property mmc-hs200-1_8v because we are already running at
HS400 mode.

Tested with fio command:
fio -filename=./test_randread -direct=1 -iodepth 1 -thread \
-rw=randwrite -ioengine=psync -bs=16k -size=1G -numjobs=10 \
-runtime=600 -group_reporting -name=mytest

Signed-off-by: Jianfeng Liu <liujianfeng1994@gmail.com>
Link: https://lore.kernel.org/r/20250228143341.70244-1-liujianfeng1994@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

diff --git a/arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts b/arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts
index 6d68f70284e450bb9f58e201ab53f46227345213..2a0590209462eac2a91d8f66c6cc8520f6d53742 100644 (file)
--- a/arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts
@@ -690,10 +690,9 @@
 
 &sdhci {
        bus-width = <8>;
-       max-frequency = <200000000>;
+       max-frequency = <150000000>;
        mmc-hs400-1_8v;
        mmc-hs400-enhanced-strobe;
-       mmc-hs200-1_8v;
        no-sdio;
        no-sd;
        non-removable;