[deliverable/linux.git] / Documentation / devicetree / bindings / mmc / nvidia-sdhci.txt

* NVIDIA Tegra Secure Digital Host Controller

This controller on Tegra family SoCs provides an interface for MMC, SD,
and SDIO types of memory cards.

Required properties:
- compatible : Should be "nvidia,<chip>-sdhci"
- reg : Should contain SD/MMC registers location and length
- interrupts : Should contain SD/MMC interrupt
- bus-width : Number of data lines, can be <1>, <4>, or <8>

Optional properties:
- cd-gpios : Specify GPIOs for card detection
- wp-gpios : Specify GPIOs for write protection
- power-gpios : Specify GPIOs for power control

Example:

sdhci@c8000200 {
	compatible = "nvidia,tegra20-sdhci";
	reg = <0xc8000200 0x200>;
	interrupts = <47>;
	cd-gpios = <&gpio 69 0>; /* gpio PI5 */
	wp-gpios = <&gpio 57 0>; /* gpio PH1 */
	power-gpios = <&gpio 155 0>; /* gpio PT3 */
	bus-width = <8>;
};
Commit	Line	Data
275173b2 GL	1	* NVIDIA Tegra Secure Digital Host Controller
	2
	3	This controller on Tegra family SoCs provides an interface for MMC, SD,
	4	and SDIO types of memory cards.
	5
	6	Required properties:
	7	- compatible : Should be "nvidia,<chip>-sdhci"
55cd65e4 SW	8	- reg : Should contain SD/MMC registers location and length
55cd65e4 SW	9	- interrupts : Should contain SD/MMC interrupt
7f217794	10	- bus-width : Number of data lines, can be <1>, <4>, or <8>
275173b2 GL	11
	12	Optional properties:
	13	- cd-gpios : Specify GPIOs for card detection
	14	- wp-gpios : Specify GPIOs for write protection
	15	- power-gpios : Specify GPIOs for power control
	16
	17	Example:
	18
	19	sdhci@c8000200 {
	20	compatible = "nvidia,tegra20-sdhci";
	21	reg = <0xc8000200 0x200>;
	22	interrupts = <47>;
	23	cd-gpios = <&gpio 69 0>; /* gpio PI5 */
	24	wp-gpios = <&gpio 57 0>; /* gpio PH1 */
	25	power-gpios = <&gpio 155 0>; /* gpio PT3 */
7f217794	26	bus-width = <8>;
275173b2	27	};