36 lines
1.2 KiB
Diff
36 lines
1.2 KiB
Diff
From b36402e4a0772d1b3da06a4f5fbd1cfe4d6f1cc0 Mon Sep 17 00:00:00 2001
|
|
From: Jianfeng Liu <liujianfeng1994@gmail.com>
|
|
Date: Fri, 28 Feb 2025 22:33:08 +0800
|
|
Subject: 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>
|
|
|
|
--- 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;
|