GNU Linux-libre 4.14.266-gnu1
[releases.git] / Documentation / devicetree / bindings / arm / armv7m_systick.txt
1 * ARMv7M System Timer
2
3 ARMv7-M includes a system timer, known as SysTick. Current driver only
4 implements the clocksource feature.
5
6 Required properties:
7 - compatible      : Should be "arm,armv7m-systick"
8 - reg             : The address range of the timer
9
10 Required clocking property, have to be one of:
11 - clocks          : The input clock of the timer
12 - clock-frequency : The rate in HZ in input of the ARM SysTick
13
14 Examples:
15
16 systick: timer@e000e010 {
17         compatible = "arm,armv7m-systick";
18         reg = <0xe000e010 0x10>;
19         clocks = <&clk_systick>;
20 };
21
22 systick: timer@e000e010 {
23         compatible = "arm,armv7m-systick";
24         reg = <0xe000e010 0x10>;
25         clock-frequency = <90000000>;
26 };