1*4882a593SmuzhiyunAltera UART 2*4882a593Smuzhiyun 3*4882a593SmuzhiyunRequired properties: 4*4882a593Smuzhiyun- compatible : should be "ALTR,uart-1.0" <DEPRECATED> 5*4882a593Smuzhiyun- compatible : should be "altr,uart-1.0" 6*4882a593Smuzhiyun 7*4882a593SmuzhiyunOptional properties: 8*4882a593Smuzhiyun- clock-frequency : frequency of the clock input to the UART 9