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

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Message-ID: <1422283993-53642-3-git-send-email-Zubair.Kakakhel@imgtec.com>
Date:	Mon, 26 Jan 2015 14:53:11 +0000
From:	Zubair Lutfullah Kakakhel <Zubair.Kakakhel@...tec.com>
To:	<tiwai@...e.de>, <perex@...ex.cz>
CC:	<broonie@...nel.org>, <lgirdwood@...il.com>,
	<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<alsa-devel@...a-project.org>, <Zubair.Kakakhel@...tec.com>,
	<lars@...afoo.de>
Subject: [PATCH_V3 2/4] dt: sound: jz4740: Add binding documentation for jz4740-i2s

This patch adds binding for the jz4740-i2s driver.

Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@...tec.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

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@...20000 {
+	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";
+
+};
-- 
1.9.1

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