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,omap3-pre-es3-hsmmc" for OMAP3 controllers pre ES3.0
14 Should be "ti,omap4-hsmmc", for OMAP4 controllers
15- ti,hwmods: Must be "mmc<n>", n is controller instance starting 1
16
17Optional properties:
18ti,dual-volt: boolean, supports dual voltage cards
19<supply-name>-supply: phandle to the regulator device tree node
20"supply-name" examples are "vmmc", "vmmc_aux" etc
21ti,non-removable: non-removable slot (like eMMC)
22ti,needs-special-reset: Requires a special softreset sequence
23ti,needs-special-hs-handling: HSMMC IP needs special setting for handling High Speed
24dmas: List of DMA specifiers with the controller specific format
25as described in the generic DMA client binding. A tx and rx
26specifier is required.
27dma-names: List of DMA request names. These strings correspond
281:1 with the DMA specifiers listed in dmas. The string naming is
29to be "rx" and "tx" for RX and TX DMA requests, respectively.
30
31Examples:
32
33[hwmod populated DMA resources]
34
35	mmc1: mmc@0x4809c000 {
36		compatible = "ti,omap4-hsmmc";
37		reg = <0x4809c000 0x400>;
38		ti,hwmods = "mmc1";
39		ti,dual-volt;
40		bus-width = <4>;
41		vmmc-supply = <&vmmc>; /* phandle to regulator node */
42		ti,non-removable;
43	};
44
45[generic DMA request binding]
46
47	mmc1: mmc@0x4809c000 {
48		compatible = "ti,omap4-hsmmc";
49		reg = <0x4809c000 0x400>;
50		ti,hwmods = "mmc1";
51		ti,dual-volt;
52		bus-width = <4>;
53		vmmc-supply = <&vmmc>; /* phandle to regulator node */
54		ti,non-removable;
55		dmas = <&edma 24
56			&edma 25>;
57		dma-names = "tx", "rx";
58	};
59