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kernel_samsung_sm7125/Documentation/devicetree/bindings/ata/atmel-at91_cf.txt

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Atmel AT91RM9200 CompactFlash
Required properties:
- compatible : "atmel,at91rm9200-cf".
- reg : should specify localbus address and size used.
- gpios : specifies the gpio pins to control the CF device. Detect
and reset gpio's are mandatory while irq and vcc gpio's are
optional and may be set to 0 if not present.
Example:
compact-flash@50000000 {
compatible = "atmel,at91rm9200-cf";
reg = <0x50000000 0x30000000>;
gpios = <&pioC 13 0 /* irq */
&pioC 15 0 /* detect */
0 /* vcc */
&pioC 5 0 /* reset */
>;
};