1*da2f838dSThomas ChouAltera UART 2*da2f838dSThomas Chou 3*da2f838dSThomas ChouRequired properties: 4*da2f838dSThomas Chou- compatible : should be "altr,uart-1.0" 5*da2f838dSThomas Chou 6*da2f838dSThomas ChouOptional properties: 7*da2f838dSThomas Chou- clock-frequency : frequency of the clock input to the UART 8