This patch adds DT binding documentation for UniPhier
AIO audio subsystem.
Signed-off-by: Katsuhiro Suzuki <suzuki.katsuhiro@xxxxxxxxxxxxx>
---
.../devicetree/bindings/sound/uniphier,aio.txt | 36 ++++++++++++++++++++++
1 file changed, 36 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/uniphier,aio.txt
diff --git a/Documentation/devicetree/bindings/sound/uniphier,aio.txt b/Documentation/devicetree/bindings/sound/uniphier,aio.txt
new file mode 100644
index 000000000000..73f6c27ae4f7
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/uniphier,aio.txt
@@ -0,0 +1,36 @@
+Socionext UniPhier SoC audio driver
+
+The Socionext UniPhier audio subsystem consists of I2S and S/PDIF blocks in
+the same register space.
+
+Required properties:
+- compatible : should be one of the following:
+ "socionext,uniphier-ld11-aio"
+ "socionext,uniphier-ld20-aio"
+- reg : offset and length of the register set for the device.
+- interrupts : should contain I2S or S/PDIF interrupt.
+- pinctrl-names : should be "default".
+- pinctrl-0 : defined I2S signal pins for an external codec chip.
+- clock-names : should include following entries:
+ "aio"
+- clocks : a list of phandle, should contain an entry for each
+ entry in clock-names.
+- reset-names : should include following entries:
+ "aio"
+- resets : a list of phandle, should contain an entry for each
+ entry in reset-names.
+- #sound-dai-cells: should be 1.
+
+Example:
+ audio {
+ compatible = "socionext,uniphier-ld20-aio";
+ reg = <0x56000000 0x80000>;
+ interrupts = <0 144 4>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_aout>;
+ clock-names = "aio";
+ clocks = <&sys_clk 40>;
+ reset-names = "aio";
+ resets = <&sys_rst 40>;
+ #sound-dai-cells = <1>;
+ };
--
2.15.0
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