tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1Synopsys ARC Local Timer with Interrupt Capabilities
2- Found on all ARC CPUs (ARC700/ARCHS)
3- Can be optionally programmed to interrupt on Limit
4- Two idential copies TIMER0 and TIMER1 exist in ARC cores and historically
5 TIMER0 used as clockevent provider (true for all ARC cores)
6 TIMER1 used for clocksource (mandatory for ARC700, optional for ARC HS)
7
8Required properties:
9
10- compatible : should be "snps,arc-timer"
11- interrupts : single Interrupt going into parent intc
12 (16 for ARCHS cores, 3 for ARC700 cores)
13- clocks : phandle to the source clock
14
15Example:
16
17 timer0 {
18 compatible = "snps,arc-timer";
19 interrupts = <3>;
20 interrupt-parent = <&core_intc>;
21 clocks = <&core_clk>;
22 };
23
24 timer1 {
25 compatible = "snps,arc-timer";
26 clocks = <&core_clk>;
27 };