linux-sg2042/Documentation/devicetree/bindings/serial/cdns,uart.txt

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Binding for Cadence UART Controller
Required properties:
- compatible :
Use "xlnx,xuartps","cdns,uart-r1p8" for Zynq-7xxx SoC.
Use "xlnx,zynqmp-uart","cdns,uart-r1p12" for Zynq Ultrascale+ MPSoC.
- reg: Should contain UART controller registers location and length.
- interrupts: Should contain UART controller interrupts.
- clocks: Must contain phandles to the UART clocks
See ../clocks/clock-bindings.txt for details.
- clock-names: Tuple to identify input clocks, must contain "uart_clk" and "pclk"
See ../clocks/clock-bindings.txt for details.
Example:
uart@e0000000 {
compatible = "cdns,uart-r1p8";
clocks = <&clkc 23>, <&clkc 40>;
clock-names = "uart_clk", "pclk";
reg = <0xE0000000 0x1000>;
interrupts = <0 27 4>;
};