1These properties are common to multiple MMC host controllers. Any host
2that requires the respective functionality should implement them using
3these definitions.
4
5Interpreted by the OF core:
6- reg: Registers location and length.
7- interrupts: Interrupts used by the MMC controller.
8
9Required properties:
10- bus-width: Number of data lines, can be <1>, <4>, or <8>
11
12Optional properties:
13- cd-gpios: Specify GPIOs for card detection, see gpio binding
14- wp-gpios: Specify GPIOs for write protection, see gpio binding
15- cd-inverted: when present, polarity on the cd gpio line is inverted
16- wp-inverted: when present, polarity on the wp gpio line is inverted
17- non-removable: non-removable slot (like eMMC)
18- max-frequency: maximum operating clock frequency
19
20Example:
21
22sdhci@ab000000 {
23	compatible = "sdhci";
24	reg = <0xab000000 0x200>;
25	interrupts = <23>;
26	bus-width = <4>;
27	cd-gpios = <&gpio 69 0>;
28	cd-inverted;
29	wp-gpios = <&gpio 70 0>;
30	max-frequency = <50000000>;
31}
32