1*4882a593SmuzhiyunAltera UART 2*4882a593Smuzhiyun 3*4882a593SmuzhiyunRequired properties: 4*4882a593Smuzhiyun- compatible : should be "altr,uart-1.0" 5*4882a593Smuzhiyun 6*4882a593SmuzhiyunOptional properties: 7*4882a593Smuzhiyun- clock-frequency : frequency of the clock input to the UART 8