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
12Card detection:
13If no property below is supplied, standard SDHCI card detect is used.
14Only one of the properties in this section should be supplied:
15  - broken-cd: There is no card detection available; polling must be used.
16  - cd-gpios: Specify GPIOs for card detection, see gpio binding
17  - non-removable: non-removable slot (like eMMC); assume always present.
18
19Optional properties:
20- wp-gpios: Specify GPIOs for write protection, see gpio binding
21- cd-inverted: when present, polarity on the cd gpio line is inverted
22- wp-inverted: when present, polarity on the wp gpio line is inverted
23- max-frequency: maximum operating clock frequency
24
25Example:
26
27sdhci@ab000000 {
28	compatible = "sdhci";
29	reg = <0xab000000 0x200>;
30	interrupts = <23>;
31	bus-width = <4>;
32	cd-gpios = <&gpio 69 0>;
33	cd-inverted;
34	wp-gpios = <&gpio 70 0>;
35	max-frequency = <50000000>;
36}
37