tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1OMAP Timer bindings
2
3Required properties:
4- compatible: Should be set to one of the below. Please note that
5 OMAP44xx devices have timer instances that are 100%
6 register compatible with OMAP3xxx devices as well as
7 newer timers that are not 100% register compatible.
8 So for OMAP44xx devices timer instances may use
9 different compatible strings.
10
11 ti,omap2420-timer (applicable to OMAP24xx devices)
12 ti,omap3430-timer (applicable to OMAP3xxx/44xx devices)
13 ti,omap4430-timer (applicable to OMAP44xx devices)
14 ti,omap5430-timer (applicable to OMAP543x devices)
15 ti,am335x-timer (applicable to AM335x devices)
16 ti,am335x-timer-1ms (applicable to AM335x devices)
17
18- reg: Contains timer register address range (base address and
19 length).
20- interrupts: Contains the interrupt information for the timer. The
21 format is being dependent on which interrupt controller
22 the OMAP device uses.
23- ti,hwmods: Name of the hwmod associated to the timer, "timer<X>",
24 where <X> is the instance number of the timer from the
25 HW spec.
26
27Optional properties:
28- ti,timer-alwon: Indicates the timer is in an alway-on power domain.
29- ti,timer-dsp: Indicates the timer can interrupt the on-chip DSP in
30 addition to the ARM CPU.
31- ti,timer-pwm: Indicates the timer can generate a PWM output.
32- ti,timer-secure: Indicates the timer is reserved on a secure OMAP device
33 and therefore cannot be used by the kernel.
34
35Example:
36
37timer12: timer@48304000 {
38 compatible = "ti,omap3430-timer";
39 reg = <0x48304000 0x400>;
40 interrupts = <95>;
41 ti,hwmods = "timer12"
42 ti,timer-alwon;
43 ti,timer-secure;
44};