Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 41 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/sound/mxs-saif.txt b/Documentation/devicetree/bindings/sound/mxs-saif.txt
new file mode 100644
index 000000000..7ba07a118
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/mxs-saif.txt
@@ -0,0 +1,41 @@
+* 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>;
+};