1 These properties are common to multiple MMC host controllers. Any host
2 that requires the respective functionality should implement them using
5 Interpreted by the OF core:
6 - reg: Registers location and length.
7 - interrupts: Interrupts used by the MMC controller.
10 - bus-width: Number of data lines, can be <1>, <4>, or <8>
13 If no property below is supplied, standard SDHCI card detect is used.
14 Only 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.
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 - no-1-8-v: when present, denotes that 1.8v card voltage is not supported on
25 this system, even if the controller claims it is.
27 Optional SDIO properties:
28 - keep-power-in-suspend: Preserves card power during a suspend/resume cycle
29 - enable-sdio-wakeup: Enables wake up of host system on SDIO IRQ assertion
35 reg = <0xab000000 0x200>;
38 cd-gpios = <&gpio 69 0>;
40 wp-gpios = <&gpio 70 0>;
41 max-frequency = <50000000>;
42 keep-power-in-suspend;