1*4882a593Smuzhiyun* ARMv7M System Timer 2*4882a593Smuzhiyun 3*4882a593SmuzhiyunARMv7-M includes a system timer, known as SysTick. Current driver only 4*4882a593Smuzhiyunimplements the clocksource feature. 5*4882a593Smuzhiyun 6*4882a593SmuzhiyunRequired properties: 7*4882a593Smuzhiyun- compatible : Should be "arm,armv7m-systick" 8*4882a593Smuzhiyun- reg : The address range of the timer 9*4882a593Smuzhiyun 10*4882a593SmuzhiyunRequired clocking property, have to be one of: 11*4882a593Smuzhiyun- clocks : The input clock of the timer 12*4882a593Smuzhiyun- clock-frequency : The rate in HZ in input of the ARM SysTick 13*4882a593Smuzhiyun 14*4882a593SmuzhiyunExamples: 15*4882a593Smuzhiyun 16*4882a593Smuzhiyunsystick: timer@e000e010 { 17*4882a593Smuzhiyun compatible = "arm,armv7m-systick"; 18*4882a593Smuzhiyun reg = <0xe000e010 0x10>; 19*4882a593Smuzhiyun clocks = <&clk_systick>; 20*4882a593Smuzhiyun}; 21*4882a593Smuzhiyun 22*4882a593Smuzhiyunsystick: timer@e000e010 { 23*4882a593Smuzhiyun compatible = "arm,armv7m-systick"; 24*4882a593Smuzhiyun reg = <0xe000e010 0x10>; 25*4882a593Smuzhiyun clock-frequency = <90000000>; 26*4882a593Smuzhiyun}; 27