Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / timer / ti,keystone-timer.txt

diff --git a/kernel/Documentation/devicetree/bindings/timer/ti,keystone-timer.txt b/kernel/Documentation/devicetree/bindings/timer/ti,keystone-timer.txt
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+* Device tree bindings for Texas instruments Keystone timer
+
+This document provides bindings for the 64-bit timer in the KeyStone
+architecture devices. The timer can be configured as a general-purpose 64-bit
+timer, dual general-purpose 32-bit timers. When configured as dual 32-bit
+timers, each half can operate in conjunction (chain mode) or independently
+(unchained mode) of each other.
+
+It is global timer is a free running up-counter and can generate interrupt
+when the counter reaches preset counter values.
+
+Documentation:
+http://www.ti.com/lit/ug/sprugv5a/sprugv5a.pdf
+
+Required properties:
+
+- compatible : should be "ti,keystone-timer".
+- reg : specifies base physical address and count of the registers.
+- interrupts : interrupt generated by the timer.
+- clocks : the clock feeding the timer clock.
+
+Example:
+
+timer@22f0000 {
+       compatible = "ti,keystone-timer";
+       reg = <0x022f0000 0x80>;
+       interrupts = <GIC_SPI 110 IRQ_TYPE_EDGE_RISING>;
+       clocks = <&clktimer15>;
+};