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authorRajendra Nayak <rnayak@ti.com>2012-03-12 20:32:37 +0530
committerChris Ball <cjb@laptop.org>2012-03-27 12:20:09 -0400
commit46856a68dcb5f67c779d211fd6bcb5d7a2a7f19b (patch)
tree9c89099550263e3b4d7178d3869f6fcdb0d0ab5b /Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt
parentf3c55a7b5d7f2d40c805a62174bb733b55875523 (diff)
mmc: omap_hsmmc: Convert hsmmc driver to use device tree
Define dt bindings for the ti-omap-hsmmc, and adapt the driver to extract data (which was earlier passed as platform_data) from device tree. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Acked-by: Rob Herring <rob.herring@calxeda.com> Signed-off-by: Chris Ball <cjb@laptop.org>
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+* TI Highspeed MMC host controller for OMAP
+
+The Highspeed MMC Host Controller on TI OMAP family
+provides an interface for MMC, SD, and SDIO types of memory cards.
+
+Required properties:
+- compatible:
+ Should be "ti,omap2-hsmmc", for OMAP2 controllers
+ Should be "ti,omap3-hsmmc", for OMAP3 controllers
+ Should be "ti,omap4-hsmmc", for OMAP4 controllers
+- ti,hwmods: Must be "mmc<n>", n is controller instance starting 1
+- reg : should contain hsmmc registers location and length
+
+Optional properties:
+ti,dual-volt: boolean, supports dual voltage cards
+<supply-name>-supply: phandle to the regulator device tree node
+"supply-name" examples are "vmmc", "vmmc_aux" etc
+ti,bus-width: Number of data lines, default assumed is 1 if the property is missing.
+cd-gpios: GPIOs for card detection
+wp-gpios: GPIOs for write protection
+ti,non-removable: non-removable slot (like eMMC)
+ti,needs-special-reset: Requires a special softreset sequence
+
+Example:
+ mmc1: mmc@0x4809c000 {
+ compatible = "ti,omap4-hsmmc";
+ reg = <0x4809c000 0x400>;
+ ti,hwmods = "mmc1";
+ ti,dual-volt;
+ ti,bus-width = <4>;
+ vmmc-supply = <&vmmc>; /* phandle to regulator node */
+ ti,non-removable;
+ };