1* Marvell sdhci-pxa v2/v3 controller
2
3This file documents differences between the core properties in mmc.txt
4and the properties used by the sdhci-pxav2 and sdhci-pxav3 drivers.
5
6Required 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
13  * for "marvell,armada-380-sdhci", three register areas. The first
14    one for the SDHCI registers themselves, the second one for the
15    AXI/Mbus bridge registers of the SDHCI unit, the third one for the
16    SDIO3 Configuration register
17- reg names: should be "sdhci", "mbus", "conf-sdio3". only mandatory
18  for "marvell,armada-380-sdhci"
19- clocks: Array of clocks required for SDHCI; requires at least one for
20    I/O clock.
21- clock-names: Array of names corresponding to clocks property; shall be
22    "io" for I/O clock and "core" for optional core clock.
23
24Optional properties:
25- mrvl,clk-delay-cycles: Specify a number of cycles to delay for tuning.
26
27Example:
28
29sdhci@d4280800 {
30	compatible = "mrvl,pxav3-mmc";
31	reg = <0xd4280800 0x800>;
32	bus-width = <8>;
33	interrupts = <27>;
34	clocks = <&chip CLKID_SDIO1XIN>, <&chip CLKID_SDIO1>;
35	clock-names = "io", "core";
36	non-removable;
37	mrvl,clk-delay-cycles = <31>;
38};
39
40sdhci@d8000 {
41	compatible = "marvell,armada-380-sdhci";
42	reg-names = "sdhci", "mbus", "conf-sdio3";
43	reg = <0xd8000 0x1000>,
44		<0xdc000 0x100>;
45		<0x18454 0x4>;
46	interrupts = <0 25 0x4>;
47	clocks = <&gateclk 17>;
48	clock-names = "io";
49	mrvl,clk-delay-cycles = <0x1F>;
50};
51