xref: /OK3568_Linux_fs/kernel/Documentation/devicetree/bindings/serial/rockchip_uart.txt (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun* Universal Asynchronous Receiver/Transmitter (UART)
2*4882a593Smuzhiyun
3*4882a593Smuzhiyun- compatible: "rockchip,rk_serial"
4*4882a593Smuzhiyun
5*4882a593Smuzhiyun  Compatibility with all rk28xx rk29xx rk30xx rk31xx SOCs.
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun- reg: The base address of the UART register bank.
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun- interrupts: A single interrupt specifier.
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun- id: port line, determine the ttySx
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun- use-dma-rx: enable dma receive
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun- use-dma-tx: enable dma tramsmit
16*4882a593Smuzhiyun
17*4882a593SmuzhiyunExample:
18*4882a593Smuzhiyunuart0: serial@10124000 {
19*4882a593Smuzhiyun		compatible = "rockchip,rk_serial";
20*4882a593Smuzhiyun		reg = <0x10124000 0x100>;
21*4882a593Smuzhiyun		interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
22*4882a593Smuzhiyun		clock-frequency = <24000000>;
23*4882a593Smuzhiyun		id = <0>;
24*4882a593Smuzhiyun		use-dma-rx;
25*4882a593Smuzhiyun		use-dma-tx;
26*4882a593Smuzhiyun		status = "disabled";
27*4882a593Smuzhiyun	};
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