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Documentation / devicetree / bindings / mmc / nvidia,tegra20-sdhci.txt




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Based on kernel version 4.0. Page generated on 2015-04-14 21:21 EST.

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	This file documents differences between the core properties described
7	by mmc.txt and the properties used by the sdhci-tegra driver.
8	
9	Required properties:
10	- compatible : For Tegra20, must contain "nvidia,tegra20-sdhci".
11	  For Tegra30, must contain "nvidia,tegra30-sdhci".  For Tegra114,
12	  must contain "nvidia,tegra114-sdhci".  For Tegra124, must contain
13	  "nvidia,tegra124-sdhci".  Otherwise, must contain "nvidia,<chip>-sdhci",
14	  plus one of the above, where <chip> is tegra132 or tegra210.
15	- clocks : Must contain one entry, for the module clock.
16	  See ../clocks/clock-bindings.txt for details.
17	- resets : Must contain an entry for each entry in reset-names.
18	  See ../reset/reset.txt for details.
19	- reset-names : Must include the following entries:
20	  - sdhci
21	
22	Optional properties:
23	- power-gpios : Specify GPIOs for power control
24	
25	Example:
26	
27	sdhci@c8000200 {
28		compatible = "nvidia,tegra20-sdhci";
29		reg = <0xc8000200 0x200>;
30		interrupts = <47>;
31		clocks = <&tegra_car 14>;
32		resets = <&tegra_car 14>;
33		reset-names = "sdhci";
34		cd-gpios = <&gpio 69 0>; /* gpio PI5 */
35		wp-gpios = <&gpio 57 0>; /* gpio PH1 */
36		power-gpios = <&gpio 155 0>; /* gpio PT3 */
37		bus-width = <8>;
38	};
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