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Documentation / devicetree / bindings / mmc / fsl-esdhc.txt




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Based on kernel version 3.9. Page generated on 2013-05-02 22:59 EST.

1	* Freescale Enhanced Secure Digital Host Controller (eSDHC)
2	
3	The Enhanced Secure Digital Host Controller provides an interface
4	for MMC, SD, 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-esdhc driver.
8	
9	Required properties:
10	  - interrupt-parent : interrupt source phandle.
11	  - clock-frequency : specifies eSDHC base clock frequency.
12	
13	Optional properties:
14	  - sdhci,wp-inverted : specifies that eSDHC controller reports
15	    inverted write-protect state; New devices should use the generic
16	    "wp-inverted" property.
17	  - sdhci,1-bit-only : specifies that a controller can only handle
18	    1-bit data transfers. New devices should use the generic
19	    "bus-width = <1>" property.
20	  - sdhci,auto-cmd12: specifies that a controller can only handle auto
21	    CMD12.
22	
23	Example:
24	
25	sdhci@2e000 {
26		compatible = "fsl,mpc8378-esdhc", "fsl,esdhc";
27		reg = <0x2e000 0x1000>;
28		interrupts = <42 0x8>;
29		interrupt-parent = <&ipic>;
30		/* Filled in by U-Boot */
31		clock-frequency = <0>;
32	};
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