ASoC: codecs: Add msm8916-wcd digital codec

msm8916-wcd codec is found in Qualcomm msm8916 and apq8016 processors.
This codec IP is split in to two parts(Digital & Analog).
Analog part is integrated in to PMIC PM8916 and the digital part is
integrated into Application processor. Data transfer between Analog and
Digital Die is done via a internal bus called PDM.

This patch adds support to Digital part of the Codec which is integrated
into Application Processor.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 20 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/sound/qcom,msm8916-wcd-digital.txt b/Documentation/devicetree/bindings/sound/qcom,msm8916-wcd-digital.txt
new file mode 100644
index 000000000000..1c8e4cb25176
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/qcom,msm8916-wcd-digital.txt
@@ -0,0 +1,20 @@
+msm8916 digital audio CODEC
+
+## Bindings for codec core in lpass:
+
+Required properties
+ - compatible = "qcom,msm8916-wcd-digital-codec";
+ - reg: address space for lpass codec.
+ - clocks: Handle to mclk and ahbclk
+ - clock-names: should be "mclk", "ahbix-clk".
+
+Example:
+
+audio-codec@771c000{
+	compatible = "qcom,msm8916-wcd-digital-codec";
+	reg = <0x0771c000 0x400>;
+	clocks = <&gcc GCC_ULTAUDIO_AHBFABRIC_IXFABRIC_CLK>,
+		 <&gcc GCC_CODEC_DIGCODEC_CLK>;
+	clock-names = "ahbix-clk", "mclk";
+	#sound-dai-cells = <1>;
+};