Add Device Tree Binding for the CS42L52 Codec
v2 Adds clearer explaination of mic configs and select.
Renames bindings to '-' instead of '_'.
Definition of GPIO for reset pin.
Signed-off-by: Brian Austin <brian.austin@xxxxxxxxxx>
---
.../devicetree/bindings/sound/cs42l52.txt | 48 ++++++++++++++++++++++
1 file changed, 48 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/cs42l52.txt
diff --git a/Documentation/devicetree/bindings/sound/cs42l52.txt b/Documentation/devicetree/bindings/sound/cs42l52.txt
new file mode 100644
index 0000000..bd91ecf
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/cs42l52.txt
@@ -0,0 +1,48 @@
+CS42L52 audio CODEC
+
+Required properties:
+
+ - compatible : "cirrus,cs42l52"
+
+ - reg : the I2C address of the device for I2C
+
+Optional properties:
+
+ - reset-gpio : GPIO controller's phandle and the number
+ of the GPIO used to reset the codec.
+ - chgfreq : Charge Pump Frequency values. Allowable values of
+ 0x00 through 0x0F.
+ Frequency = (64xFs)/(N+2)
+ - mica-cfg : MIC A single-ended or differential select.
+ 0x00 = Single-Ended
+ 0x01 = Differential
+ - micb-cfg : MIC B single-ended or differential select.
+ 0x00 = Single-Ended
+ 0x01 = Differential
+ - mica-sel : MIC A single ended input select. For Single-Ended
+ configuration, select which MIC to use.
+ 0x00 = MIC1
+ 0x01 = MIC2
+ - micb-sel : MIC B single ended input select. For Single-Ended
+ configuration, select which MIC to use.
+ 0x00 = MIC1
+ 0x01 = MIC2
+ - micbias-lvl: Set the output voltage level on the MICBIAS Pin
+ 0x00 = 0.5 x VA
+ 0x01 = 0.6 x VA
+ 0x02 = 0.7 x VA
+ 0x03 = 0.8 x VA
+ 0x04 = 0.83 x VA
+ 0x05 = 0.91 x VA
+
+Example:
+
+codec: cs42l52@4a {
+ compatible = "cirrus,cs42l52";
+ reg = <0x4a>;
+ reset-gpio = <&gpio 10 0>;
+ chgfreq = <0x05>;
+ mica-cfg = <0x00>;
+ mica-sel = <0x01>;
+ micbias-lvl = <0x05>;
+};
--
1.8.4.rc3
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