Messages in this thread | | | From | Joel Stanley <> | Date | Wed, 1 Sep 2021 23:38:19 +0000 | Subject | Re: [PATCH 2/2] clocksource/drivers/fttmr010: Be stricter on IRQs |
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On Sat, 28 Aug 2021 at 08:08, Cédric Le Goater <clg@kaod.org> wrote:
> AFAICT, the ast2600 does not use a fttmr010 clocksource.
Correct.
When doing bringup of the ast2600, I updated this driver to support the new layout. Only once I'd submitted it did I learn that aspeed preferred to use only the Cortex A7's timer source, and only that source.
The armv7 timer can be lost when a core goes into power save mode, but I am told the ast2600 does not implement power saving modes, so we set the always-on property for the arm,armv7-timer. This allows us to use the timer as a clocksource for hrtimers, removing the need to use the fttmr010 driver at all.
Cheers,
Joel
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