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Date:   Fri, 11 Jun 2021 16:45:54 +0300
From:   Jarkko Nikula <>
To:     Tony Lindgren <>,
Cc:     Dave Gerlach <>, Faiz Abbas <>,
        Greg Kroah-Hartman <>,
        Grygorii Strashko <>,
        Keerthy <>, Nishanth Menon <>,
        Suman Anna <>,,
Subject: Re: [PATCH] bus: ti-sysc: Fix gpt12 system timer issue with reserved

On 11.6.2021 9.02, Tony Lindgren wrote:
> Jarkko Nikula <> reported that Beagleboard
> revision c2 stopped booting. Jarkko bisected the issue down to
> commit 6cfcd5563b4f ("clocksource/drivers/timer-ti-dm: Fix suspend
> and resume for am3 and am4").
> Let's fix the issue by tagging system timers as reserved rather than
> ignoring them. And let's not probe any interconnect target module child
> devices for reserved modules.
> This allows PM runtime to keep track of clocks and clockdomains for
> the interconnect target module, and prevent the system timer from idling
> flags set for system timers.
> Fixes: 6cfcd5563b4f ("clocksource/drivers/timer-ti-dm: Fix suspend and resume for am3 and am4")
> Reported-by: Jarkko Nikula <>
> Signed-off-by: Tony Lindgren <>
> ---
>  drivers/bus/ti-sysc.c | 20 +++++++++++++-------
>  1 file changed, 13 insertions(+), 7 deletions(-)
I tested this on top of 06af8679449d ("coredump: Limit what can
interrupt coredumps"). I tested Tony's earlier test diff which does the
same that this actual patch also on top of 6cfcd5563b4f.

Tested-by: Jarkko Nikula <>

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