linux/Documentation/devicetree/bindings/mmc/sdhci-sirf.txt
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Prefs
   1* SiRFprimII/marco/atlas6 SDHCI Controller
   2
   3This file documents differences between the core properties in mmc.txt
   4and the properties used by the sdhci-sirf driver.
   5
   6Required properties:
   7- compatible: sirf,prima2-sdhc
   8
   9Optional properties:
  10- cd-gpios: card detect gpio, with zero flags.
  11
  12Example:
  13
  14        sd0: sdhci@56000000 {
  15                compatible = "sirf,prima2-sdhc";
  16                reg = <0xcd000000 0x100000>;
  17                cd-gpios = <&gpio 6 0>;
  18        };
  19