linux-kernel - Re: [PATCH v2 08/12] ARM: davinci: dm355: switch to using the clocksource driver

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Date:   Tue, 26 Feb 2019 13:09:26 +0100
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Sekhar Nori <nsekhar@...com>
Cc:     Kevin Hilman <khilman@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: Re: [PATCH v2 08/12] ARM: davinci: dm355: switch to using the
 clocksource driver

pt., 8 lut 2019 o 13:34 Sekhar Nori <nsekhar@...com> napisał(a):
>
> On 04/02/19 10:47 PM, Bartosz Golaszewski wrote:
> > -/*
> > - * T0_BOT: Timer 0, bottom:  clockevent source for hrtimers
> > - * T0_TOP: Timer 0, top   :  clocksource for generic timekeeping
> > - * T1_BOT: Timer 1, bottom:  (used by DSP in TI DSPLink code)
> > - * T1_TOP: Timer 1, top   :  <unused>
>
> Documenting this timer division is important because DSP usage and
> unused timers are not immediately clear from kernel code alone. Can you
> retain these comments in all patches of this series (I guess T0_BOT etc.
> terminology is changed, so feel free to adjust the comment text).
>
> > - */
> > -static struct davinci_timer_info dm355_timer_info = {
> > -     .timers         = davinci_timer_instance,
> > -     .clockevent_id  = T0_BOT,
> > -     .clocksource_id = T0_TOP,
> > +static const struct davinci_timer_cfg dm355_timer_cfg = {
> > +     .reg = {
> > +             .start          = DAVINCI_TIMER0_BASE,
> > +             .end            = DAVINCI_TIMER0_BASE + SZ_4K,
>
> Here and other places too, SZ_4K - 1
>
> Thanks,
> Sekhar

I used appropriate DEFINE_RES_x() macros instead.

Bart