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Documentation / devicetree / bindings / mmc / sdhci-pxa.txt




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Based on kernel version 3.15.4. Page generated on 2014-07-07 09:01 EST.

1	* Marvell sdhci-pxa v2/v3 controller
2	
3	This file documents differences between the core properties in mmc.txt
4	and the properties used by the sdhci-pxav2 and sdhci-pxav3 drivers.
5	
6	Required properties:
7	- compatible: Should be "mrvl,pxav2-mmc", "mrvl,pxav3-mmc" or
8	  "marvell,armada-380-sdhci".
9	- reg:
10	  * for "mrvl,pxav2-mmc" and "mrvl,pxav3-mmc", one register area for
11	    the SDHCI registers.
12	  * for "marvell,armada-380-sdhci", two register areas. The first one
13	    for the SDHCI registers themselves, and the second one for the
14	    AXI/Mbus bridge registers of the SDHCI unit.
15	
16	Optional properties:
17	- mrvl,clk-delay-cycles: Specify a number of cycles to delay for tuning.
18	
19	Example:
20	
21	sdhci@d4280800 {
22		compatible = "mrvl,pxav3-mmc";
23		reg = <0xd4280800 0x800>;
24		bus-width = <8>;
25		interrupts = <27>;
26		non-removable;
27		mrvl,clk-delay-cycles = <31>;
28	};
29	
30	sdhci@d8000 {
31		compatible = "marvell,armada-380-sdhci";
32		reg = <0xd8000 0x1000>, <0xdc000 0x100>;
33		interrupts = <0 25 0x4>;
34		clocks = <&gateclk 17>;
35		mrvl,clk-delay-cycles = <0x1F>;
36	};
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