1*4882a593Smuzhiyun* ARM SBSA defined generic UART 2*4882a593SmuzhiyunThis UART uses a subset of the PL011 registers and consequently lives 3*4882a593Smuzhiyunin the PL011 driver. It's baudrate and other communication parameters 4*4882a593Smuzhiyuncannot be adjusted at runtime, so it lacks a clock specifier here. 5*4882a593Smuzhiyun 6*4882a593SmuzhiyunRequired properties: 7*4882a593Smuzhiyun- compatible: must be "arm,sbsa-uart" 8*4882a593Smuzhiyun- reg: exactly one register range 9*4882a593Smuzhiyun- interrupts: exactly one interrupt specifier 10*4882a593Smuzhiyun- current-speed: the (fixed) baud rate set by the firmware 11