xref: /freebsd/sys/contrib/device-tree/Bindings/timer/ti,keystone-timer.txt (revision 6be3386466ab79a84b48429ae66244f21526d3df)
1* Device tree bindings for Texas instruments Keystone timer
2
3This document provides bindings for the 64-bit timer in the KeyStone
4architecture devices. The timer can be configured as a general-purpose 64-bit
5timer, dual general-purpose 32-bit timers. When configured as dual 32-bit
6timers, each half can operate in conjunction (chain mode) or independently
7(unchained mode) of each other.
8
9It is global timer is a free running up-counter and can generate interrupt
10when the counter reaches preset counter values.
11
12Documentation:
13https://www.ti.com/lit/ug/sprugv5a/sprugv5a.pdf
14
15Required properties:
16
17- compatible : should be "ti,keystone-timer".
18- reg : specifies base physical address and count of the registers.
19- interrupts : interrupt generated by the timer.
20- clocks : the clock feeding the timer clock.
21
22Example:
23
24timer@22f0000 {
25	compatible = "ti,keystone-timer";
26	reg = <0x022f0000 0x80>;
27	interrupts = <GIC_SPI 110 IRQ_TYPE_EDGE_RISING>;
28	clocks = <&clktimer15>;
29};
30