* ARMv7M System Timer ARMv7-M includes a system timer, known as SysTick. Current driver only implements the clocksource feature. Required properties: - compatible : Should be "arm,armv7m-systick" - reg : The address range of the timer Required clocking property, have to be one of: - clocks : The input clock of the timer - clock-frequency : The rate in HZ in input of the ARM SysTick Examples: systick: timer@e000e010 { compatible = "arm,armv7m-systick"; reg = <0xe000e010 0x10>; clocks = <&clk_systick>; }; systick: timer@e000e010 { compatible = "arm,armv7m-systick"; reg = <0xe000e010 0x10>; clock-frequency = <90000000>; };