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-rw-r--r--Documentation/devicetree/bindings/tty/serial/fsl-mxs-auart.txt16
1 files changed, 7 insertions, 9 deletions
diff --git a/Documentation/devicetree/bindings/tty/serial/fsl-mxs-auart.txt b/Documentation/devicetree/bindings/tty/serial/fsl-mxs-auart.txt
index 273a8d5b330..2c00ec64628 100644
--- a/Documentation/devicetree/bindings/tty/serial/fsl-mxs-auart.txt
+++ b/Documentation/devicetree/bindings/tty/serial/fsl-mxs-auart.txt
@@ -5,20 +5,18 @@ Required properties:
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.
+- dmas: DMA specifier, consisting of a phandle to DMA controller node
+ and AUART DMA channel ID.
+ Refer to dma.txt and fsl-mxs-dma.txt for details.
+- dma-names: "rx" for RX channel, "tx" for TX channel.
Example:
auart0: serial@8006a000 {
compatible = "fsl,imx28-auart", "fsl,imx23-auart";
reg = <0x8006a000 0x2000>;
- interrupts = <112 70 71>;
- fsl,auart-dma-channel = <8 9>;
+ interrupts = <112>;
+ dmas = <&dma_apbx 8>, <&dma_apbx 9>;
+ dma-names = "rx", "tx";
};
Note: Each auart port should have an alias correctly numbered in "aliases"