现象这个目录是空的分析这是TF部分的原理图，首先测量了SD_VDD的电压发现只有0.004V硬件连接上测量看着都是连通的解决diff --git a/kernel-4.19/arch/arm/boot/dts/tb8766p1_bsp_ztk.dts b/kernel-4.19/arch/arm/boot/dts/tb8766p1_bsp_ztk.dts index bf90020f40c..b7c1fd4dd31 100644 --- a/kernel-4.19/arch/arm/boot/dts/tb8766p1_bsp_ztk.dts +++ b/kernel