From: hhb <hhb@rock-chips.com>
Date: Sat, 30 Nov 2013 02:02:20 +0000 (+0800)
Subject: rk serial: add Documentation/devicetree/bindings/serial/rockchip_uart.txt
X-Git-Tag: firefly_0821_release~6479
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=94c3b14a947398ba7b9b20610d54d8b31dda01e2;p=firefly-linux-kernel-4.4.55.git

rk serial: add 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";
+	};