Messages in this thread | | | Date | Fri, 2 May 2014 15:14:34 -0700 | Subject | Re: [PATCH 04/12] clocksource: Sched clock source for Versatile Express | From | Linus Walleij <> |
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On Tue, Feb 11, 2014 at 9:10 AM, Pawel Moll <pawel.moll@arm.com> wrote:
> This patch adds a trival sched clock source using free > running, 24MHz clocked counter present in the ARM Ltd. > Versatile Express platform's System Registers block. > > This code replaces the call in the VE machine code. > > Cc: Daniel Lezcano <daniel.lezcano@linaro.org> > Cc: Thomas Gleixner <tglx@linutronix.de> > Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Even the Integrator is very similar, albeit using register 0x28 instead of register 0x5c. cd commit a79528e9d849803457b6235ddb1a1cfd4e11c6cd
It's one of these things where writing a device driver results in more code than just registering this counter with the sched_clock guts :-/
Getting the clock from the DT gives this nice feeling of having it all complete, and sched_clock cannot really change frequency anyway so I'm happy with this thing.
I'll augment it for Integrator when/if I find time.
Yours, Linus Walleij
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