[PATCH v2 1/4] mmc: omap_hsmmc: Convert hsmmc driver to use device tree
From: T Krishnamoorthy, Balaji <hidden>
Date: 2012-02-24 11:32:07
Also in:
linux-devicetree, linux-mmc, linux-omap
On Thu, Feb 23, 2012 at 5:31 PM, Rajendra Nayak [off-list ref] wrote:
quoted hunk
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 <redacted> --- ?.../devicetree/bindings/mmc/ti-omap-hsmmc.txt ? ? ?| ? 31 +++++++++ ?drivers/mmc/host/omap_hsmmc.c ? ? ? ? ? ? ? ? ? ? ?| ? 68 ++++++++++++++++++++ ?2 files changed, 99 insertions(+), 0 deletions(-) ?create mode 100644 Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txtdiff --git a/Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt b/Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt new file mode 100644 index 0000000..e4fa8f0 --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt@@ -0,0 +1,31 @@ +* 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 OMAP2/3 controllers
omap_hsmmc is applicable for omap2430 and omap3. omap2420 has non high speed controller mmci-omap - drivers/mmc/host/omap.c May be omap3-hsmmc compatible with omap2430 ?
+ 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)
+
+Example:
+ ? ? ? mmc1: mmc at 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;
+ ? ? ? };