Kernel-4.18.0-80.el8_cirrus,clps711x-uart

• Cirrus Logic CLPS711X Universal Asynchronous Receiver/Transmitter (UART)

Required properties:

• compatible: Should be “cirrus,ep7209-uart”.
• reg: Address and length of the register set for the device.
• interrupts: Should contain UART TX and RX interrupt.
• clocks: Should contain UART core clock number.
• syscon: Phandle to SYSCON node, which contain UART control bits.

Optional properties:

• {rts,cts,dtr,dsr,rng,dcd}-gpios: specify a GPIO for RTS/CTS/DTR/DSR/RI/DCD
  line respectively.

Note: Each UART port should have an alias correctly numbered
in “aliases” node.

Example:
aliases {
serial0 = &uart1;
};

uart1: uart@80000480 {
    compatible = "cirrus,ep7312-uart","cirrus,ep7209-uart";
    reg = <0x80000480 0x80>;
    interrupts = <12 13>;
    clocks = <&clks 11>;
    syscon = <&syscon1>;
    cts-gpios = <&sysgpio 0 GPIO_ACTIVE_LOW>;
    dsr-gpios = <&sysgpio 1 GPIO_ACTIVE_LOW>;
    dcd-gpios = <&sysgpio 2 GPIO_ACTIVE_LOW>;
};