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[PATCH_V3,2/4] dt: sound: jz4740: Add binding documentation for jz4740-i2s

Message ID 1422283993-53642-3-git-send-email-Zubair.Kakakhel@imgtec.com
State Accepted, archived
Commit 6fb4aebee9d128f1c61c3bc9e6a0132b12ab563c
Headers show

Commit Message

Zubair Lutfullah Kakakhel Jan. 26, 2015, 2:53 p.m. UTC 
This patch adds binding for the jz4740-i2s driver.

Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>

---
The jz4740 is platform only at the moment.

But DT support is being added

See http://patchwork.linux-mips.org/bundle/paulburton/ci20-v3.20/

V3 changes: Missed out adding dma bindings in required properties.
Only put them in example node for V2.

V2 changes: Added DMA bindings for later on
---
 .../bindings/sound/ingenic,jz4740-i2s.txt          | 23 ++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/ingenic,jz4740-i2s.txt
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Patch

diff --git a/Documentation/devicetree/bindings/sound/ingenic,jz4740-i2s.txt b/Documentation/devicetree/bindings/sound/ingenic,jz4740-i2s.txt
new file mode 100644
index 0000000..b414333
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/ingenic,jz4740-i2s.txt
@@ -0,0 +1,23 @@ 
+Ingenic JZ4740 I2S controller
+
+Required properties:
+- compatible : "ingenic,jz4740-i2s"
+- reg : I2S registers location and length
+- clocks : AIC and I2S PLL clock specifiers.
+- clock-names: "aic" and "i2s"
+- dmas: DMA controller phandle and DMA request line for I2S Tx and Rx channels
+- dma-names: Must be "tx" and "rx"
+
+Example:
+
+i2s: i2s@10020000 {
+	compatible = "ingenic,jz4740-i2s";
+	reg = <0x10020000 0x94>;
+
+	clocks = <&cgu JZ4740_CLK_AIC>, <&cgu JZ4740_CLK_I2SPLL>;
+	clock-names = "aic", "i2s";
+
+	dmas = <&dma 2>, <&dma 3>;
+	dma-names = "tx", "rx";
+
+};