/dts-v1/; /plugin/; / { compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709"; fragment@0 { target = <&spi0>; frag0: __overlay__ { status = "okay"; sd1 { reg = <1>; status = "okay"; compatible = "spi,mmc_spi"; voltage-ranges = <3000 3600>; spi-max-frequency = <16000000>; }; }; }; };