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/* Enable 1-bit SDIO from MMC interface via GPIOs 22-25. Includes sdhost overlay. */
/include/ "sdhost-overlay.dts"
/{
compatible = "brcm,bcm2708";
fragment@3 {
target = <&mmc>;
sdio_mmc: __overlay__ {
compatible = "brcm,bcm2835-mmc";
pinctrl-names = "default";
pinctrl-0 = <&sdio_pins>;
non-removable;
bus-width = <1>;
brcm,overclock-50 = <0>;
status = "okay";
};
};
fragment@4 {
target = <&gpio>;
__overlay__ {
sdio_pins: sdio_pins {
brcm,pins = <22 23 24 25>;
brcm,function = <7 7 7 7>; /* ALT3 = SD1 */
brcm,pull = <0 2 2 2>;
};
};
};
__overrides__ {
poll_once = <&sdio_mmc>,"non-removable?";
sdio_overclock = <&sdio_mmc>,"brcm,overclock-50:0";
};
};
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