1 * ARM AMBA Primecell PL011 & PL010 serial UART
4 - compatible: must be "arm,primecell", "arm,pl011" or "arm,pl010"
5 - reg: exactly one register range with length 0x1000
6 - clock: input clock frequency for the UART (used to calculate the baud
10 - skip-init: if present, the baud rate divisor is not changed