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[karo-tx-linux.git] / Documentation / devicetree / bindings / mmc / ti-omap-hsmmc.txt
1 * TI Highspeed MMC host controller for OMAP
2
3 The Highspeed MMC Host Controller on TI OMAP family
4 provides an interface 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 omap_hsmmc driver.
8
9 Required 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
16 Optional properties:
17 ti,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
20 ti,non-removable: non-removable slot (like eMMC)
21 ti,needs-special-reset: Requires a special softreset sequence
22 ti,needs-special-hs-handling: HSMMC IP needs special setting for handling High Speed
23
24 Example:
25         mmc1: mmc@0x4809c000 {
26                 compatible = "ti,omap4-hsmmc";
27                 reg = <0x4809c000 0x400>;
28                 ti,hwmods = "mmc1";
29                 ti,dual-volt;
30                 bus-width = <4>;
31                 vmmc-supply = <&vmmc>; /* phandle to regulator node */
32                 ti,non-removable;
33         };