Kernel-4.18.0-80.el8_brcm,bcm6345-uart

• BCM63xx UART

Required properties:

• compatible: “brcm,bcm6345-uart”

• reg: The base address of the UART register bank.

• interrupts: A single interrupt specifier.

• clocks: Clock driving the hardware; used to figure out the baud rate
  divisor.

Optional properties:

• clock-names: Should be “refclk”.

Example:

uart0: serial@14e00520 {
    compatible = "brcm,bcm6345-uart";
    reg = <0x14e00520 0x18>;
    interrupt-parent = <&periph_intc>;
    interrupts = <2>;
    clocks = <&periph_clk>;
    clock-names = "refclk";
};

clocks {
    periph_clk: periph_clk@0 {
        compatible = "fixed-clock";
        #clock-cells = <0>;
        clock-frequency = <54000000>;
    };
};