linux-kernel - Re: [PATCH 2/2] clocksource/drivers/timer-ti-dm: Handle dra7 timer wrap errata i940

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Message-ID: <YFhurzhHvusXbvyU@atomide.com>
Date:   Mon, 22 Mar 2021 12:17:19 +0200
From:   Tony Lindgren <tony@...mide.com>
To:     Daniel Lezcano <daniel.lezcano@...aro.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>, Keerthy <j-keerthy@...com>,
        linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Tero Kristo <kristo@...nel.org>
Subject: Re: [PATCH 2/2] clocksource/drivers/timer-ti-dm: Handle dra7 timer
 wrap errata i940

Hi,

* Daniel Lezcano <daniel.lezcano@...aro.org> [210322 10:16]:
> On 04/03/2021 08:37, Tony Lindgren wrote:
> > There is a timer wrap issue on dra7 for the ARM architected timer.
> > In a typical clock configuration the timer fails to wrap after 388 days.
> > 
> > To work around the issue, we need to use timer-ti-dm percpu timers instead.
> > 
> > Let's configure dmtimer3 and 4 as percpu timers by default, and warn about
> > the issue if the dtb is not configured properly.
> > 
> > Let's do this as a single patch so it can be backported to v5.8 and later
> > kernels easily. 
> 
> Cc: <stable@...r.kernel.org> # v5.8+
> 
> ??

Yes please, that would be great.

Thanks,

Tony