ASoC: da7213: Add bindings documentation for codec driver

Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 41 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/sound/da7213.txt b/Documentation/devicetree/bindings/sound/da7213.txt
new file mode 100644
index 000000000000..7280e828ab91
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/da7213.txt
@@ -0,0 +1,41 @@
+Dialog Semiconductor DA7213 Audio Codec bindings
+
+======
+
+Required properties:
+- compatible : Should be "dlg,da7213"
+- reg: Specifies the I2C slave address
+
+Optional properties:
+- clocks : phandle and clock specifier for codec MCLK.
+- clock-names : Clock name string for 'clocks' attribute, should be "mclk".
+
+- dlg,micbias1-lvl : Voltage (mV) for Mic Bias 1
+        [<1600>, <2200>, <2500>, <3000>]
+- dlg,micbias2-lvl : Voltage (mV) for Mic Bias 2
+        [<1600>, <2200>, <2500>, <3000>]
+- dlg,dmic-data-sel : DMIC channel select based on clock edge.
+        ["lrise_rfall", "lfall_rrise"]
+- dlg,dmic-samplephase : When to sample audio from DMIC.
+        ["on_clkedge", "between_clkedge"]
+- dlg,dmic-clkrate : DMIC clock frequency (MHz).
+        [<1500000>, <3000000>]
+
+======
+
+Example:
+
+        codec_i2c: da7213@1a {
+                compatible = "dlg,da7213";
+                reg = <0x1a>;
+
+                clocks = <&clks 201>;
+                clock-names = "mclk";
+
+                dlg,micbias1-lvl = <2500>;
+                dlg,micbias2-lvl = <2500>;
+
+                dlg,dmic-data-sel = "lrise_rfall";
+                dlg,dmic-samplephase = "between_clkedge";
+                dlg,dmic-clkrate = <3000000>;
+        };