Testing yaml dtschemas

1. First test the binding : make clean && make -j8 dt_binding_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/<path to yaml>

2. Then check the dtsi/dts files that are compatible with this schema. Example : rg "generic-uhci" , here rg is recursive grep program

arch/arm/boot/dts/aspeed/aspeed-g4.dtsi
158:			compatible = "aspeed,ast2400-uhci", "generic-uhci";

arch/arm/boot/dts/aspeed/aspeed-g5.dtsi
186:			compatible = "aspeed,ast2500-uhci", "generic-uhci";

1. Now set options to cross-compile with the architecture that has the dts files (here-arm) : export CROSS_COMPILE=aarch64-linux-gnu- ARCH=arm KBUILD_OUTPUT=out/

2. Now make config file :

   1. First clean your setup (and you have to build your bindings again in step 4)

   2. Then you may have to run make mrproper to switch to the new architecture

   3. Then run make defconfig for default config

   4. Build the bindings again : make -j8 dt_binding_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/<path to yaml>

3. Now test the dts files : make -j8 dtbs_check DT_SCHEMA_FILES=<path to yaml>