1* TI Highspeed MMC host controller for OMAP
2
3The Highspeed MMC Host Controller on TI OMAP family
4provides an interface for MMC, SD, and SDIO types of memory cards.
5
6This file documents differences between the core properties described
7by mmc.txt and the properties used by the omap_hsmmc driver.
8
9Required properties:
10- compatible:
11 Should be "ti,omap2-hsmmc", for OMAP2 controllers
12 Should be "ti,omap3-hsmmc", for OMAP3 controllers
13 Should be "ti,omap4-hsmmc", for OMAP4 controllers
14- ti,hwmods: Must be "mmc<n>", n is controller instance starting 1
15
16Optional properties:
17ti,dual-volt: boolean, supports dual voltage cards
18<supply-name>-supply: phandle to the regulator device tree node
19"supply-name" examples are "vmmc", "vmmc_aux" etc
20ti,non-removable: non-removable slot (like eMMC)
21ti,needs-special-reset: Requires a special softreset sequence
22ti,needs-special-hs-handling: HSMMC IP needs special setting for handling High Speed
23dmas: List of DMA specifiers with the controller specific format
24as described in the generic DMA client binding. A tx and rx
25specifier is required.
26dma-names: List of DMA request names. These strings correspond
271:1 with the DMA specifiers listed in dmas. The string naming is
28to be "rx" and "tx" for RX and TX DMA requests, respectively.
29
30Examples:
31
32[hwmod populated DMA resources]
33
34	mmc1: mmc@0x4809c000 {
35		compatible = "ti,omap4-hsmmc";
36		reg = <0x4809c000 0x400>;
37		ti,hwmods = "mmc1";
38		ti,dual-volt;
39		bus-width = <4>;
40		vmmc-supply = <&vmmc>; /* phandle to regulator node */
41		ti,non-removable;
42	};
43
44[generic DMA request binding]
45
46	mmc1: mmc@0x4809c000 {
47		compatible = "ti,omap4-hsmmc";
48		reg = <0x4809c000 0x400>;
49		ti,hwmods = "mmc1";
50		ti,dual-volt;
51		bus-width = <4>;
52		vmmc-supply = <&vmmc>; /* phandle to regulator node */
53		ti,non-removable;
54		dmas = <&edma 24
55			&edma 25>;
56		dma-names = "tx", "rx";
57	};
58