riscv: dts: thead: downclock SD card for LPi4A

It's reported that @198MHz some R/W error will happen.

Signed-off-by: Icenowy Zheng <uwu@icenowy.me>
(cherry picked from commit 108fcf335e0798ab0ecb07c8d30f8b566561a66a)
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>

diff --git a/arch/riscv/boot/dts/thead/light-lpi4a-ref.dts b/arch/riscv/boot/dts/thead/light-lpi4a-ref.dts
index 803abc4c4906f5579daef2cccebcdfbb983eb080..a7e88a30146319040e6425236bd0e40e5aca9f3b 100644 (file)
--- a/arch/riscv/boot/dts/thead/light-lpi4a-ref.dts
+++ b/arch/riscv/boot/dts/thead/light-lpi4a-ref.dts
@@ -865,7 +865,7 @@
 };
 
 &sdhci0 {
-       max-frequency = <198000000>;
+       max-frequency = <100000000>;
        bus-width = <4>;
        pull_up;
        wprtn_ignore;