1 files changed, 35 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/tty/serial/fsl-mxs-auart.txt b/Documentation/devicetree/bindings/tty/serial/fsl-mxs-auart.txt
new file mode 100644
index 00000000..273a8d5b
--- /dev/null
+++ b/Documentation/devicetree/bindings/tty/serial/fsl-mxs-auart.txt
@@ -0,0 +1,35 @@
+* Freescale MXS Application UART (AUART)
+
+Required properties:
+- compatible : Should be "fsl,<soc>-auart". The supported SoCs include
+  imx23 and imx28.
+- reg : Address and length of the register set for the device
+- interrupts : Should contain the auart interrupt numbers
+
+Optional properties:
+- fsl,auart-dma-channel : The DMA channels, the first is for RX, the other
+		is for TX. If you add this property, it also means that you
+		will enable the DMA support for the auart.
+		Note: due to the hardware bug in imx23(see errata : 2836),
+		only the imx28 can enable the DMA support for the auart.
+
+Example:
+auart0: serial@8006a000 {
+	compatible = "fsl,imx28-auart", "fsl,imx23-auart";
+	reg = <0x8006a000 0x2000>;
+	interrupts = <112 70 71>;
+	fsl,auart-dma-channel = <8 9>;
+};
+
+Note: Each auart port should have an alias correctly numbered in "aliases"
+node.
+
+Example:
+
+aliases {
+	serial0 = &auart0;
+	serial1 = &auart1;
+	serial2 = &auart2;
+	serial3 = &auart3;
+	serial4 = &auart4;
+};