Kernel-4.18.0-80.el8_arc-uart

• Synopsys ARC UART : Non standard UART used in some of the ARC FPGA boards

Required properties:

• compatible : “snps,arc-uart”
• reg : offset and length of the register set for the device.
• interrupts : device interrupt
• clock-frequency : the input clock frequency for the UART
• current-speed : baud rate for UART

e.g.

arcuart0: serial@c0fc1000 {
compatible = “snps,arc-uart”;
reg = <0xc0fc1000 0x100>;
interrupts = <5>;
clock-frequency = <80000000>;
current-speed = <115200>;
};

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

e.g.
aliases {
serial0 = &arcuart0;
};