linux-kernel - Re: [PATCH v3 1/3] clocksource: davinci: only enable clockevents once tim34 is initialized

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Date:   Sat, 11 Jan 2020 11:19:58 +0100
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Daniel Lezcano <daniel.lezcano@...aro.org>,
        Sekhar Nori <nsekhar@...com>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        David Lechner <david@...hnology.com>,
        Kevin Hilman <khilman@...nel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: Re: [PATCH v3 1/3] clocksource: davinci: only enable clockevents once
 tim34 is initialized

pt., 10 sty 2020 o 18:56 Daniel Lezcano <daniel.lezcano@...aro.org> napisał(a):
>
> On 10/01/2020 18:16, Bartosz Golaszewski wrote:
> > From: Bartosz Golaszewski <bgolaszewski@...libre.com>
> >
> > The DM365 platform has a strange quirk (only present when using ancient
> > u-boot - mainline u-boot v2013.01 and later works fine) where if we
> > enable the second half of the timer in periodic mode before we do its
> > initialization - the time won't start flowing and we can't boot.
> >
> > When using more recent u-boot, we can enable the timer, then reinitialize
> > it and all works fine.
> >
> > To work around this issue only enable clockevents once tim34 is
> > initialized i.e. move clockevents_config_and_register() below tim34
> > initialization.
> >
> > Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com>
>
> Shall I take it through my tree?
>

Not sure, I'd say Sekhar should take it through arm-soc together with
the latter two patches if he's ok with this. Let's wait for him to
respond.

Bart