[RK3399][Android7.1] 调试笔记 --- 调整eMMC时钟速率

Platform: RK3399
OS: Android 7.1
Kernel: v4.4.83

由于板子可能不稳定，需要降低eMMC速率验证测试。

查看当前速率

降低速率到150MHz

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-vop-clk-set.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-vop-clk-set.dtsi
index f13985c..31ed375 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-vop-clk-set.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-vop-clk-set.dtsi
@@ -51,7 +51,7 @@
 &sdhci {
 		assigned-clocks = <&cru SCLK_EMMC>;
 		assigned-clock-parents = <&cru PLL_GPLL>;
-		assigned-clock-rates = <200000000>;
+		assigned-clock-rates = <150000000>;
 };
 
 &uart0 {

烧写后查看