| * CSR SiRFprimaII/atlasVI Universal Synchronous Asynchronous Receiver/Transmitter * |
| |
| Required properties: |
| - compatible : Should be "sirf,prima2-uart" or "sirf, prima2-usp-uart" |
| - reg : Offset and length of the register set for the device |
| - interrupts : Should contain uart interrupt |
| - fifosize : Should define hardware rx/tx fifo size |
| - clocks : Should contain uart clock number |
| |
| Optional properties: |
| - sirf,uart-has-rtscts: we have hardware flow controller pins in hardware |
| - rts-gpios: RTS pin for USP-based UART if sirf,uart-has-rtscts is true |
| - cts-gpios: CTS pin for USP-based UART if sirf,uart-has-rtscts is true |
| |
| Example: |
| |
| uart0: uart@b0050000 { |
| cell-index = <0>; |
| compatible = "sirf,prima2-uart"; |
| reg = <0xb0050000 0x1000>; |
| interrupts = <17>; |
| fifosize = <128>; |
| clocks = <&clks 13>; |
| }; |
| |
| On the board-specific dts, we can put rts-gpios and cts-gpios like |
| |
| usp@b0090000 { |
| compatible = "sirf,prima2-usp-uart"; |
| sirf,uart-has-rtscts; |
| rts-gpios = <&gpio 15 0>; |
| cts-gpios = <&gpio 46 0>; |
| }; |
