1ETRAX FS UART
2
3Required properties:
4- compatible : "axis,etraxfs-uart"
5- reg: offset and length of the register set for the device.
6- interrupts: device interrupt
7
8Optional properties:
9- {dtr,dsr,rng,dcd}-gpios: specify a GPIO for DTR/DSR/RI/DCD
10  line respectively.
11
12Example:
13
14serial@b00260000 {
15	compatible = "axis,etraxfs-uart";
16	reg = <0xb0026000 0x1000>;
17	interrupts = <68>;
18	status = "disabled";
19	dtr-gpios = <&sysgpio 0 GPIO_ACTIVE_LOW>;
20	dsr-gpios = <&sysgpio 1 GPIO_ACTIVE_LOW>;
21	rng-gpios = <&sysgpio 2 GPIO_ACTIVE_LOW>;
22	dcd-gpios = <&sysgpio 3 GPIO_ACTIVE_LOW>;
23};
24