These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / arm / armv7m_systick.txt

diff --git a/kernel/Documentation/devicetree/bindings/arm/armv7m_systick.txt b/kernel/Documentation/devicetree/bindings/arm/armv7m_systick.txt
new file mode 100644 (file)
index 0000000..7cf4a24
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/arm/armv7m_systick.txt
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+* 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>;
+};