Documentation: Define the MSP Driver Device Tree bindings

Here we add the required documentation for the new Device Tree
bindings pertaining to the MSP CPU-side DAI Driver.

Acked-by: Ola Lilja <ola.o.lilja@stericsson.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

diff --git a/Documentation/devicetree/bindings/sound/ux500-msp.txt b/Documentation/devicetree/bindings/sound/ux500-msp.txt
new file mode 100644 (file)
index 0000000..99acd9c
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+++ b/Documentation/devicetree/bindings/sound/ux500-msp.txt
@@ -0,0 +1,43 @@
+* ux500 MSP (CPU-side Digital Audio Interface)
+
+Required properties:
+ - compatible       :"stericsson,ux500-msp-i2s"
+ - reg              : Physical base address and length of the device's registers.
+
+Optional properties:
+ - interrupts       : The interrupt output from the device.
+ - interrupt-parent : The parent interrupt controller.
+ - <name>-supply    : Phandle to the regulator <name> supply
+
+Example:
+
+       sound {
+               compatible = "stericsson,snd-soc-mop500";
+
+               stericsson,platform-pcm-dma = <&pcm>;
+               stericsson,cpu-dai = <&msp1 &msp3>;
+               stericsson,audio-codec = <&codec>;
+       };
+
+       pcm: ux500-pcm {
+               compatible = "stericsson,ux500-pcm";
+       };
+
+       msp1: msp@80124000 {
+               compatible = "stericsson,ux500-msp-i2s";
+               reg = <0x80124000 0x1000>;
+               interrupts = <0 62 0x4>;
+               v-ape-supply = <&db8500_vape_reg>;
+       };
+
+       msp3: msp@80125000 {
+               compatible = "stericsson,ux500-msp-i2s";
+               reg = <0x80125000 0x1000>;
+               interrupts = <0 62 0x4>;
+               v-ape-supply = <&db8500_vape_reg>;
+       };
+
+       codec: ab8500-codec {
+               compatible = "stericsson,ab8500-codec";
+               stericsson,earpeice-cmv = <950>; /* Units in mV. */
+       };