From: santosh.shilimkar@ti.com (Santosh Shilimkar)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCHv2 14/20] ARM: omap4: dynamically register local timersetup function
Date: Thu, 17 Mar 2011 15:42:02 +0530 [thread overview]
Message-ID: <5f23aa9c1bf56777271c8619ddeb212c@mail.gmail.com> (raw)
In-Reply-To: <1300269821.21713.37.camel@e102391-lin.cambridge.arm.com>
> -----Original Message-----
> From: Marc Zyngier [mailto:Marc.Zyngier at arm.com]
> Sent: Wednesday, March 16, 2011 3:34 PM
> To: Santosh Shilimkar
> Cc: linux-arm-kernel at lists.infradead.org; Tony Lindgren
> Subject: RE: [RFC PATCHv2 14/20] ARM: omap4: dynamically register
> local timersetup function
>
[....]
> > This way the kernel built with CONFIG_LOCAL_TIMERS can still work
> > on SoCs where twd isn't supported.
> >
> > Looks like your patch breaks that unless and until I am missing
> > something.
>
> I think the bit you're missing is that when no local timer is
> registered, the code in percpu_timer.c::percpu_timer_setup() ensures
> that the broadcast timers are used as a default.
>
> In the OMAP4 case, twd is registered unless we detect a
> OMAP4430_REV_ES1_0. In that case, we let the magic happen and fall
> back
> to the broadcast timers. Tested on a PandaBoard with twd
> artificially disabled.
>
Cool.
Thanks for the update.
next prev parent reply other threads:[~2011-03-17 10:12 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-15 15:12 [RFC PATCHv2 00/20] A15 architected timer support Marc Zyngier
2011-03-15 15:12 ` [RFC PATCHv2 01/20] ARM: architected timers: move local timer support to percpu_timer.c Marc Zyngier
2011-03-15 15:12 ` [RFC PATCHv2 02/20] ARM: omap2: remove stubbed twd_timer_setup call Marc Zyngier
2011-03-15 15:12 ` [RFC PATCHv2 03/20] ARM: exynos4: " Marc Zyngier
2011-03-15 15:12 ` [RFC PATCHv2 04/20] ARM: shmobile: " Marc Zyngier
2011-03-15 15:12 ` [RFC PATCHv2 05/20] ARM: tegra: " Marc Zyngier
2011-03-15 15:12 ` [RFC PATCHv2 06/20] ARM: ux500: " Marc Zyngier
2011-03-15 15:12 ` [RFC PATCHv2 07/20] ARM: versatile: " Marc Zyngier
2011-03-15 15:12 ` [RFC PATCHv2 08/20] ARM: remove unused twd_timer_setup stub Marc Zyngier
2011-03-15 15:12 ` [RFC PATCHv2 09/20] ARM: architected timers: add A15 architected timers Marc Zyngier
2011-04-09 2:47 ` Stephen Boyd
2011-04-11 8:31 ` Marc Zyngier
2011-03-15 15:12 ` [RFC PATCHv2 10/20] ARM: Platform dependent sched_clock() override Marc Zyngier
2011-03-15 15:12 ` [RFC PATCHv2 11/20] ARM: architected timers: Add A15 specific sched_clock implementation Marc Zyngier
2011-03-15 15:12 ` [RFC PATCHv2 12/20] ARM: versatile/vexpress: rework timer support Marc Zyngier
2011-03-15 15:12 ` [RFC PATCHv2 13/20] ARM: msm: dynamically register local timer setup function Marc Zyngier
2011-03-15 15:12 ` [RFC PATCHv2 14/20] ARM: omap4: " Marc Zyngier
2011-03-16 5:55 ` [RFC PATCHv2 14/20] ARM: omap4: dynamically register local timersetup function Santosh Shilimkar
2011-03-16 10:03 ` Marc Zyngier
2011-03-17 10:12 ` Santosh Shilimkar [this message]
2011-03-15 15:12 ` [RFC PATCHv2 15/20] ARM: exynos4: dynamically register local timer setup function Marc Zyngier
2011-03-15 15:12 ` [RFC PATCHv2 16/20] ARM: shmobile: " Marc Zyngier
2011-03-15 15:13 ` [RFC PATCHv2 17/20] ARM: tegra: " Marc Zyngier
2011-03-15 15:13 ` [RFC PATCHv2 18/20] ARM: ux500: " Marc Zyngier
2011-03-15 15:13 ` [RFC PATCHv2 19/20] ARM: simplify percpu_timer_setup Marc Zyngier
2011-03-15 15:13 ` [RFC PATCHv2 20/20] ARM: simplify percpu_timer_ack Marc Zyngier
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