| * ARM AMBA Primecell PL011 & PL010 serial UART | |
| Required properties: | |
| - compatible: must be "arm,primecell", "arm,pl011" or "arm,pl010" | |
| - reg: exactly one register range with length 0x1000 | |
| - clock: input clock frequency for the UART (used to calculate the baud | |
| rate divisor) |