linux-kernel - [PATCHv3 4/7] Documentation: Add device tree bindings for Freescale SAI.

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Date:	Tue, 17 Dec 2013 11:24:41 +0800
From:	Xiubo Li <Li.Xiubo@...escale.com>
To:	<lgirdwood@...il.com>, <broonie@...nel.org>, <timur@...i.org>,
	<perex@...ex.cz>
CC:	<r64188@...escale.com>, <rob.herring@...xeda.com>,
	<pawel.moll@....com>, <mark.rutland@....com>,
	<swarren@...dotorg.org>, <ian.campbell@...rix.com>,
	<rob@...dley.net>, <linux@....linux.org.uk>, <tiwai@...e.de>,
	<grant.likely@...aro.org>, <fabio.estevam@...escale.com>,
	<LW@...O-electronics.de>, <oskar@...ra.com>,
	<shawn.guo@...aro.org>, <b42378@...escale.com>,
	<b18965@...escale.com>, <devicetree@...r.kernel.org>,
	<linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<alsa-devel@...a-project.org>
Subject: [PATCHv3 4/7] Documentation: Add device tree bindings for Freescale SAI.

This adds the Document for Freescale SAI driver under
Documentation/devicetree/bindings/sound/.

Signed-off-by: Xiubo Li <Li.Xiubo@...escale.com>
---
 .../devicetree/bindings/sound/fsl-sai.txt          | 40 ++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/fsl-sai.txt

diff --git a/Documentation/devicetree/bindings/sound/fsl-sai.txt b/Documentation/devicetree/bindings/sound/fsl-sai.txt
new file mode 100644
index 0000000..ca49ad1
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/fsl-sai.txt
@@ -0,0 +1,40 @@
+Freescale Synchronous Audio Interface (SAI).
+
+The SAI is based on I2S module that used communicating with audio codecs,
+which provides a synchronous audio interface that supports fullduplex
+serial interfaces with frame synchronization such as I2S, AC97, TDM, and
+codec/DSP interfaces.
+
+
+Required properties:
+- compatible: Compatible list, contains "fsl,vf610-sai".
+- reg: Offset and length of the register set for the device.
+- clocks: Must contain an entry for each entry in clock-names.
+- clock-names : Must include the "sai" entry.
+- dmas : Generic dma devicetree binding as described in
+  Documentation/devicetree/bindings/dma/dma.txt.
+- dma-names : Two dmas have to be defined, "tx" and "rx".
+- pinctrl-names: Must contain a "default" entry.
+- pinctrl-NNN: One property must exist for each entry in pinctrl-names.
+  See ../pinctrl/pinctrl-bindings.txt for details of the property values.
+- big-endian-regs: If this property is absent, the little endian mode will
+  be in use as default, or the big endian mode will be in use for all the
+  device registers.
+- big-endian-data: If this property is absent, the little endian mode will
+  be in use as default, or the big endian mode will be in use for all the
+  fifo data.
+
+Example:
+sai2: sai@...31000 {
+	      compatible = "fsl,vf610-sai";
+	      reg = <0x40031000 0x1000>;
+	      pinctrl-names = "default";
+	      pinctrl-0 = <&pinctrl_sai2_1>;
+	      clocks = <&clks VF610_CLK_SAI2>;
+	      clock-names = "sai";
+	      dma-names = "tx", "rx";
+	      dmas = <&edma0 0 VF610_EDMA_MUXID0_SAI2_TX>,
+		   <&edma0 0 VF610_EDMA_MUXID0_SAI2_RX>;
+	      big-endian_regs;
+	      big-endian_data;
+};
-- 
1.8.4


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