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From: Arnd Bergmann <arnd@arndb.de>
To: balbi@ti.com
Cc: linux-arm-kernel@lists.infradead.org,
	Tony Lindgren <tony@atomide.com>,
	daniel.lezcano@linaro.org,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	tglx@linutronix.de,
	Linux OMAP Mailing List <linux-omap@vger.kernel.org>
Subject: Re: [RFC/PATCH 11/11] arm: boot: dts: omap: add missing default status for 32k counter
Date: Wed, 30 Sep 2015 23:58:16 +0200	[thread overview]
Message-ID: <22213826.1MtkNIZ6W3@wuerfel> (raw)
In-Reply-To: <20150930141209.GB31865@saruman.tx.rr.com>

On Wednesday 30 September 2015 09:12:09 Felipe Balbi wrote:
> On Wed, Sep 30, 2015 at 10:15:25AM +0200, Arnd Bergmann wrote:
> > On Tuesday 29 September 2015 15:44:06 Felipe Balbi wrote:
> > > All devices should have a default status. Ignoring
> > > the arguments if it should be 'okay' or 'disabled'
> > > by default, let's set them all the 'disabled' and
> > > have boards enable 32k counter.
> > > 
> > > Signed-off-by: Felipe Balbi <balbi@ti.com>
> > > 
> > 
> > The patch looks good, but the description is slightly incorrect:
> > There is no reason to list "status='okay'" other than overriding
> > the 'disabled' status.
> > 
> > I'd phrase it something like:
> > 
> > "We want the use of the 32k counter to be a per-board setting,
> > so let's disable it by default in each dtsi file and override the
> > setting in the boards. Any board that does not wire up the counter
> > should leave it disabled".
> > 
> > However, if you really want all boards to provide the counter all
> > the time, I'd argue that we're better off dropping this patch. We
> > use the status="disabled" trick for anything that may or may not
> > be working based on the board design, but things that are present
> > everywhere don't need this.
> 
> okay, so here's the thing. While fiddling with the 32k counter, I noticed
> that even though there was no status listed, the thing still initializes
> fine. However, when moving 32k to drivers/clocksource and using
> CLOCKSOURCE_OF_DECLARE(), 32k would *NOT* probe unless I had an explicit
> status = "okay" in DT.

Very strange, that sounds like a bug in the clocksource probe code.
Can you check how this happens?

	Arnd

  reply	other threads:[~2015-09-30 21:58 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-29 20:43 [RFC/PATCH 00/11] arm: omap: counter32k rework Felipe Balbi
2015-09-29 20:43 ` [RFC/PATCH 01/11] arm: omap2: timer: get rid of obfuscating macros Felipe Balbi
2015-09-29 20:43 ` [RFC/PATCH 02/11] arm: omap2: timer: add a gptimer argument to sync32k_timer_init() Felipe Balbi
2015-09-29 20:43 ` [RFC/PATCH 03/11] arm: omap2: timer: remove __omap_gptimer_init() Felipe Balbi
2015-10-05 11:01   ` Tony Lindgren
2015-10-05 15:24     ` Felipe Balbi
2015-10-05 16:02       ` Tony Lindgren
2015-10-05 16:08         ` Felipe Balbi
2015-10-05 16:30           ` Tony Lindgren
2015-09-29 20:43 ` [RFC/PATCH 04/11] arm: omap2: timer: provide generic sync32k_timer_init function Felipe Balbi
2015-09-29 20:44 ` [RFC/PATCH 05/11] arm: omap2: timer: move realtime_counter_init() around Felipe Balbi
2015-09-29 20:44 ` [RFC/PATCH 06/11] arm: omap2: timer: always call clocksource_of_init() when DT Felipe Balbi
2015-09-29 20:44 ` [RFC/PATCH 07/11] arm: omap2: timer: remove omap4_local_timer_init Felipe Balbi
2015-09-29 20:44 ` [RFC/PATCH 08/11] arm: omap2: timer: rename omap_sync32k_timer_init() Felipe Balbi
2015-09-29 20:44 ` [RFC/PATCH 09/11] clocksource: add TI 32.768 Hz counter driver Felipe Balbi
2015-10-01 21:58   ` John Stultz
2015-10-01 21:59   ` Daniel Lezcano
2015-10-05 10:50     ` Tony Lindgren
2015-10-05 11:03       ` Tony Lindgren
2015-10-01 22:20   ` John Stultz
2015-10-01 22:30     ` Felipe Balbi
2015-09-29 20:44 ` [RFC/PATCH 10/11] arm: omap2: timer: limit hwmod usage to non-DT boots Felipe Balbi
2015-09-29 20:44 ` [RFC/PATCH 11/11] arm: boot: dts: omap: add missing default status for 32k counter Felipe Balbi
2015-09-30  8:15   ` Arnd Bergmann
2015-09-30 14:12     ` Felipe Balbi
2015-09-30 21:58       ` Arnd Bergmann [this message]
2015-10-05 17:52         ` Felipe Balbi
2015-10-05 19:41           ` Felipe Balbi
2015-10-06  8:08             ` Arnd Bergmann
2015-10-06 14:57               ` Felipe Balbi
2015-10-06 15:18                 ` Tony Lindgren
2015-10-06 15:29                   ` Felipe Balbi
2015-10-05 10:45   ` Tony Lindgren
2015-09-30  8:22 ` [RFC/PATCH 00/11] arm: omap: counter32k rework Arnd Bergmann
2015-09-30 14:13   ` Felipe Balbi
     [not found]     ` <20150930141338.GC31865-HgARHv6XitJaoMGHk7MhZQC/G2K4zDHf@public.gmane.org>
2015-09-30 14:42       ` Arnd Bergmann
2015-09-30 14:49         ` Arnd Bergmann
2015-09-30 14:57           ` Felipe Balbi
2015-09-30 15:03           ` Thierry Reding
2015-10-01 22:12           ` Daniel Lezcano
     [not found]             ` <560DAFC5.50003-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-10-05 10:55               ` Tony Lindgren
     [not found]                 ` <20151005105554.GV23801-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2015-10-05 11:03                   ` Arnd Bergmann
2015-10-05 11:13                     ` Tony Lindgren
     [not found]                       ` <20151005111341.GY23801-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2015-10-05 12:19                         ` Arnd Bergmann

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