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authorPeter Ujfalusi <peter.ujfalusi@ti.com>2012-05-16 14:11:58 +0300
committerSamuel Ortiz <sameo@linux.intel.com>2012-05-20 17:27:12 +0200
commit37e13cecaa141eccce705843f5d2f7509e29bd3a (patch)
tree6f0b138f14c86ac5851b97fc3acd59c7a736ca5e /Documentation/devicetree
parent1f01d60e4c0cae3416071680635f227df0020dd8 (diff)
mfd: Add support for Device Tree to twl6040
Device tree based probing support for the core twl6040 driver. Child devices will be created as MFD devices: - ASoC codec is always created - Vibra child is only created if the vibra section present in the DT blob. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/mfd/twl6040.txt62
1 files changed, 62 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mfd/twl6040.txt b/Documentation/devicetree/bindings/mfd/twl6040.txt
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+++ b/Documentation/devicetree/bindings/mfd/twl6040.txt
@@ -0,0 +1,62 @@
+Texas Instruments TWL6040 family
+
+The TWL6040s are 8-channel high quality low-power audio codecs providing audio
+and vibra functionality on OMAP4+ platforms.
+They are connected ot the host processor via i2c for commands, McPDM for audio
+data and commands.
+
+Required properties:
+- compatible : Must be "ti,twl6040";
+- reg: must be 0x4b for i2c address
+- interrupts: twl6040 has one interrupt line connecteded to the main SoC
+- interrupt-parent: The parent interrupt controller
+- twl6040,audpwron-gpio: Power on GPIO line for the twl6040
+
+- vio-supply: Regulator for the twl6040 VIO supply
+- v2v1-supply: Regulator for the twl6040 V2V1 supply
+
+Optional properties, nodes:
+- enable-active-high: To power on the twl6040 during boot.
+
+Vibra functionality
+Required properties:
+- vddvibl-supply: Regulator for the left vibra motor
+- vddvibr-supply: Regulator for the right vibra motor
+- vibra { }: Configuration section for vibra parameters containing the following
+ properties:
+- ti,vibldrv-res: Resistance parameter for left driver
+- ti,vibrdrv-res: Resistance parameter for right driver
+- ti,viblmotor-res: Resistance parameter for left motor
+- ti,viblmotor-res: Resistance parameter for right motor
+
+Optional properties within vibra { } section:
+- vddvibl_uV: If the vddvibl default voltage need to be changed
+- vddvibr_uV: If the vddvibr default voltage need to be changed
+
+Example:
+&i2c1 {
+ twl6040: twl@4b {
+ compatible = "ti,twl6040";
+ reg = <0x4b>;
+
+ interrupts = <0 119 4>;
+ interrupt-parent = <&gic>;
+ twl6040,audpwron-gpio = <&gpio4 31 0>;
+
+ vio-supply = <&v1v8>;
+ v2v1-supply = <&v2v1>;
+ enable-active-high;
+
+ /* regulators for vibra motor */
+ vddvibl-supply = <&vbat>;
+ vddvibr-supply = <&vbat>;
+
+ vibra {
+ /* Vibra driver, motor resistance parameters */
+ ti,vibldrv-res = <8>;
+ ti,vibrdrv-res = <3>;
+ ti,viblmotor-res = <10>;
+ ti,vibrmotor-res = <10>;
+ };
+ };
+};