Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / sound / mxs-saif.txt

diff --git a/kernel/Documentation/devicetree/bindings/sound/mxs-saif.txt b/kernel/Documentation/devicetree/bindings/sound/mxs-saif.txt
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+++ b/kernel/Documentation/devicetree/bindings/sound/mxs-saif.txt
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+* Freescale MXS Serial Audio Interface (SAIF)
+
+Required properties:
+- compatible: Should be "fsl,<chip>-saif"
+- reg: Should contain registers location and length
+- interrupts: Should contain ERROR interrupt number
+- dmas: DMA specifier, consisting of a phandle to DMA controller node
+  and SAIF DMA channel ID.
+  Refer to dma.txt and fsl-mxs-dma.txt for details.
+- dma-names: Must be "rx-tx".
+
+Optional properties:
+- fsl,saif-master: phandle to the master SAIF.  It's only required for
+  the slave SAIF.
+
+Note: Each SAIF controller should have an alias correctly numbered
+in "aliases" node.
+
+Example:
+
+aliases {
+       saif0 = &saif0;
+       saif1 = &saif1;
+};
+
+saif0: saif@80042000 {
+       compatible = "fsl,imx28-saif";
+       reg = <0x80042000 2000>;
+       interrupts = <59>;
+       dmas = <&dma_apbx 4>;
+       dma-names = "rx-tx";
+};
+
+saif1: saif@80046000 {
+       compatible = "fsl,imx28-saif";
+       reg = <0x80046000 2000>;
+       interrupts = <58>;
+       dmas = <&dma_apbx 5>;
+       dma-names = "rx-tx";
+       fsl,saif-master = <&saif0>;
+};