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Documentation / devicetree / bindings / serial / sirf-uart.txt




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Based on kernel version 4.7.2. Page generated on 2016-08-22 22:43 EST.

1	* CSR SiRFprimaII/atlasVI Universal Synchronous Asynchronous Receiver/Transmitter *
2	
3	Required properties:
4	- compatible : Should be "sirf,prima2-uart", "sirf, prima2-usp-uart",
5			"sirf,atlas7-uart" or "sirf,atlas7-usp-uart".
6	- reg : Offset and length of the register set for the device
7	- interrupts : Should contain uart interrupt
8	- fifosize : Should define hardware rx/tx fifo size
9	- clocks : Should contain uart clock number
10	
11	Optional properties:
12	- uart-has-rtscts: we have hardware flow controller pins in hardware
13	- rts-gpios: RTS pin for USP-based UART if uart-has-rtscts is true
14	- cts-gpios: CTS pin for USP-based UART if uart-has-rtscts is true
15	
16	Example:
17	
18	uart0: uart@b0050000 {
19		cell-index = <0>;
20		compatible = "sirf,prima2-uart";
21		reg = <0xb0050000 0x1000>;
22		interrupts = <17>;
23		fifosize = <128>;
24		clocks = <&clks 13>;
25	};
26	
27	On the board-specific dts, we can put rts-gpios and cts-gpios like
28	
29	usp@b0090000 {
30		compatible = "sirf,prima2-usp-uart";
31		uart-has-rtscts;
32		rts-gpios = <&gpio 15 0>;
33		cts-gpios = <&gpio 46 0>;
34	};
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