Re: [PATCH] clocksource/drivers/timer-ti-dm: Register clocksource/event only for am654

[Markus Schneider-Pargmann]

On Sat Aug 29, 2026 at 9:23 AM CEST, H. Nikolaus Schaller wrote:
>
>> Am 28.08.2026 um 23:04 schrieb Andreas Kemnade <andreas@xxxxxxxxxxxx>:
>> 
>> On Fri, 28 Aug 2026 20:47:45 +0200
>> "Markus Schneider-Pargmann (TI)" <msp@xxxxxxxxxxxx> wrote:
>> 
>>> Registering clocksource/clockevent for the older platforms breaks
>>> booting them. The older platforms have their own implementation in early
>>> boot that is used to register clocksource/clockevent in
>>> timer-ti-dm-systimer.c.
>>> 
>>> With am654, the timer is much more complex with more dependencies so
>>> doing this in early boot with the other driver is very difficult and
>>> gets ugly. Instead it is implemented in the platform driver for am654.
>>> However the old platforms may not register clocksource/clockevent in
>>> this driver as that would break the boot.
>>> 
>>> Add a system_timer_capable flag that is only set for am654-timer that
>>> gates the clocksource/clockevent registration.
>>> 
>>> Reported-by: H. Nikolaus Schaller <hns@xxxxxxxxxxxxx>
>>> Closes: https://lore.kernel.org/r/2013A99A-0502-4128-ACFA-B04886224393@xxxxxxxxxxxxx
>>> Fixes: b8eeeca55456 ("clocksource/drivers/timer-ti-dm: Add clocksource support")
>>> Signed-off-by: Markus Schneider-Pargmann (TI) <msp@xxxxxxxxxxxx>
>> 
>> Tested-by: Andreas Kemnade <andreas@xxxxxxxxxxxx> # OMAP3 GTA04
>
> Tested-by: H. Nikolaus Schaller <hns@xxxxxxxxxxxxx> # OMAP3 OpenPandora
>
> BR and thanks,
> Nikolaus
>
> PS: I would suggest that patches for omap-dm-timer are also routed to linux-omap@xxxxxxxxxxxxxxx

I agree, it should be added to the MAINTAINERS file.

Best
Markus

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