/dts-v1/; /plugin/; / { fragment@0 { target = <&spi4>; __overlay__ { status = "okay"; #address-cells = <1>; #size-cells = <0>; pinctrl-names = "default"; pinctrl-0 = <&spi4m0_csn0 &spi4m0_pins>; spidev@1 { compatible = "rockchip,spidev"; status = "okay"; reg = <1>; spi-max-frequency = <50000000>; }; }; }; };