ASoC: Davinci: McASP: add device tree support for McASP
Add device tree probe for McASP driver.
Note:
DMA parameters are not populated from DT and will be done later.
Signed-off-by: Hebbar, Gururaja <gururaja.hebbar@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt b/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt
new file mode 100644
index 0000000..e6148ec
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt
@@ -0,0 +1,44 @@
+Texas Instruments McASP controller
+
+Required properties:
+- compatible :
+ "ti,dm646x-mcasp-audio" : for DM646x platforms
+ "ti,da830-mcasp-audio" : for both DA830 & DA850 platforms
+
+- reg : Should contain McASP registers offset and length
+- interrupts : Interrupt number for McASP
+- op-mode : I2S/DIT ops mode.
+- tdm-slots : Slots for TDM operation.
+- num-serializer : Serializers used by McASP.
+- serial-dir : A list of serializer pin mode. The list number should be equal
+ to "num-serializer" parameter. Each entry is a number indication
+ serializer pin direction. (0 - INACTIVE, 1 - TX, 2 - RX)
+
+
+Optional properties:
+
+- ti,hwmods : Must be "mcasp<n>", n is controller instance starting 0
+- tx-num-evt : FIFO levels.
+- rx-num-evt : FIFO levels.
+- sram-size-playback : size of sram to be allocated during playback
+- sram-size-capture : size of sram to be allocated during capture
+
+Example:
+
+mcasp0: mcasp0@1d00000 {
+ compatible = "ti,da830-mcasp-audio";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0x100000 0x3000>;
+ interrupts = <82 83>;
+ op-mode = <0>; /* MCASP_IIS_MODE */
+ tdm-slots = <2>;
+ num-serializer = <16>;
+ serial-dir = <
+ 0 0 0 0 /* 0: INACTIVE, 1: TX, 2: RX */
+ 0 0 0 0
+ 0 0 0 1
+ 2 0 0 0 >;
+ tx-num-evt = <1>;
+ rx-num-evt = <1>;
+};