From 94c3b14a947398ba7b9b20610d54d8b31dda01e2 Mon Sep 17 00:00:00 2001
From: hhb <hhb@rock-chips.com>
Date: Sat, 30 Nov 2013 10:02:20 +0800
Subject: [PATCH] rk serial: add
 Documentation/devicetree/bindings/serial/rockchip_uart.txt

---
 .../bindings/serial/rockchip_uart.txt         | 27 +++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/serial/rockchip_uart.txt

diff --git a/Documentation/devicetree/bindings/serial/rockchip_uart.txt b/Documentation/devicetree/bindings/serial/rockchip_uart.txt
new file mode 100644
index 000000000000..d8244da2f8f8
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/rockchip_uart.txt
@@ -0,0 +1,27 @@
+* Universal Asynchronous Receiver/Transmitter (UART)
+
+- compatible: "rockchip,rk_serial"
+
+  Compatibility with all rk28xx rk29xx rk30xx rk31xx SOCs.
+
+- reg: The base address of the UART register bank.
+
+- interrupts: A single interrupt specifier.
+
+- id: port line, determine the ttySx
+ 
+- use-dma-rx: enable dma receive
+
+- use-dma-tx: enable dma tramsmit
+
+Example:
+uart0: serial@10124000 {
+		compatible = "rockchip,rk_serial";
+		reg = <0x10124000 0x100>;
+		interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
+		clock-frequency = <24000000>;
+		id = <0>;
+		use-dma-rx;
+		use-dma-tx;
+		status = "disabled";
+	};
-- 
2.34.1