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




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Based on kernel version 3.16. Page generated on 2014-08-06 21:38 EST.

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