This patch adds DT bindings documentation for ROHM BD28623MUV
class D speaker amplifier.
Signed-off-by: Katsuhiro Suzuki <suzuki.katsuhiro@xxxxxxxxxxxxx>
---
Changes in v2:
- Change gpio properties to optional
- Change VCCA, VCCP-supply to mandatory
---
.../devicetree/bindings/sound/rohm,bd28623.txt | 29 ++++++++++++++++++++++
1 file changed, 29 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/rohm,bd28623.txt
diff --git a/Documentation/devicetree/bindings/sound/rohm,bd28623.txt b/Documentation/devicetree/bindings/sound/rohm,bd28623.txt
new file mode 100644
index 000000000000..d84557c2686e
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/rohm,bd28623.txt
@@ -0,0 +1,29 @@
+ROHM BD28623MUV Class D speaker amplifier for digital input
+
+This codec does not have any control buses such as I2C, it detect format and
+rate of I2S signal automatically. It has two signals that can be connected
+to GPIOs: reset and mute.
+
+Required properties:
+- compatible : should be "rohm,bd28623"
+- #sound-dai-cells: should be 0.
+- VCCA-supply : regulator phandle for the VCCA supply
+- VCCP1-supply : regulator phandle for the VCCP1 supply
+- VCCP2-supply : regulator phandle for the VCCP2 supply
+
+Optional properties:
+- reset-gpios : GPIO specifier for the active low reset line
+- mute-gpios : GPIO specifier for the active low mute line
+
+Example:
+
+ codec {
+ compatible = "rohm,bd28623";
+ #sound-dai-cells = <0>;
+
+ VCCA-supply = <&vcc_reg>;
+ VCCP1-supply = <&vcc_reg>;
+ VCCP2-supply = <&vcc_reg>;
+ reset-gpios = <&gpio 0 GPIO_ACTIVE_LOW>;
+ mute-gpios = <&gpio 1 GPIO_ACTIVE_LOW>;
+ };
--
2.16.1
--
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