34 lines
1.1 KiB
Plaintext
34 lines
1.1 KiB
Plaintext
* TI Highspeed MMC host controller for OMAP
|
|
|
|
The Highspeed MMC Host Controller on TI OMAP family
|
|
provides an interface for MMC, SD, and SDIO types of memory cards.
|
|
|
|
Required properties:
|
|
- compatible:
|
|
Should be "ti,omap2-hsmmc", for OMAP2 controllers
|
|
Should be "ti,omap3-hsmmc", for OMAP3 controllers
|
|
Should be "ti,omap4-hsmmc", for OMAP4 controllers
|
|
- ti,hwmods: Must be "mmc<n>", n is controller instance starting 1
|
|
- reg : should contain hsmmc registers location and length
|
|
|
|
Optional properties:
|
|
ti,dual-volt: boolean, supports dual voltage cards
|
|
<supply-name>-supply: phandle to the regulator device tree node
|
|
"supply-name" examples are "vmmc", "vmmc_aux" etc
|
|
ti,bus-width: Number of data lines, default assumed is 1 if the property is missing.
|
|
cd-gpios: GPIOs for card detection
|
|
wp-gpios: GPIOs for write protection
|
|
ti,non-removable: non-removable slot (like eMMC)
|
|
ti,needs-special-reset: Requires a special softreset sequence
|
|
|
|
Example:
|
|
mmc1: mmc@0x4809c000 {
|
|
compatible = "ti,omap4-hsmmc";
|
|
reg = <0x4809c000 0x400>;
|
|
ti,hwmods = "mmc1";
|
|
ti,dual-volt;
|
|
ti,bus-width = <4>;
|
|
vmmc-supply = <&vmmc>; /* phandle to regulator node */
|
|
ti,non-removable;
|
|
};
|