From: Qiao Zhou <qiaozhou@xxxxxxxxxxxx>
Add binding documentation for ASR8751C serial device.
Signed-off-by: qiaozhou <qiaozhou@xxxxxxxxxxxx>
---
.../devicetree/bindings/serial/asr-serial.txt | 23 ++++++++++++++++++++++
1 file changed, 23 insertions(+)
create mode 100644 Documentation/devicetree/bindings/serial/asr-serial.txt
diff --git a/Documentation/devicetree/bindings/serial/asr-serial.txt b/Documentation/devicetree/bindings/serial/asr-serial.txt
new file mode 100644
index 0000000..9e0e191
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/asr-serial.txt
@@ -0,0 +1,23 @@
+* UART Controller of ASR8751C SoCs
+
+Required properties:
+- compatible : should be "asr,uart"
+- reg: iomem address and length of uart registers
+- interrupts : Should be the interrupt number
+- clocks: clock required by uart
+- clock-frequency: frequency of clock source
+- dmas: dma channel used by uart tx or rx
+- dma-names: dma name of uart tx or rx
+
+Example:
+
+ uart0: uart@d4017000 {
+ compatible = "asr,uart";
+ reg = <0xd4017000 0x1000>;
+ interrupts = <0 32 0x4>;
+ clock-frequency = <13000000>;
+ dmas = <&pdma0 AP_UART0_RX 1
+ &pdma0 AP_UART0_TX 1>;
+ dma-names = "rx", "tx";
+ clocks = <&soc_clocks ASR_CLK_UART0>;
+ };
--
2.7.4
