From: broonie@kernel.org (Mark Brown)
To: linux-arm-kernel@lists.infradead.org
Subject: Unable to boot mainline on snow chromebook since 3.15
Date: Mon, 8 Sep 2014 14:49:37 +0100 [thread overview]
Message-ID: <20140908134937.GK4015@sirena.org.uk> (raw)
In-Reply-To: <CACxGe6v40wMSW8LJRtyZ3C6PinRMcQM-Zog+XpTJ-QG3HHJknw@mail.gmail.com>
On Mon, Sep 08, 2014 at 01:20:11PM +0100, Grant Likely wrote:
> On Mon, Sep 8, 2014 at 12:21 PM, Will Deacon <will.deacon@arm.com> wrote:
> > Whilst I'm sympathetic to people working to enable DRM, I think this is
> > the right solution to the problem. The transition from simplefb to DRM
> > shouldn't break display for a bunch of kernel revisions whilst the code is
> > in flux.
> I would go further. The kernel behaviour has changed, and we have to
> deal with platforms that assume the old behaviour. That means either
> defaulting to leaving enabled regulators/clocks alone unless there is
> a flag in the DT saying they can be power managed, or black listing
> platforms that are known to depend on the regulator being on.
For regulators there is essentially a flag in DT already - the
regulators should not be described in DT if the OS isn't supposed to be
managing them.
> Updating the device tree must not be required to get the kernel to
> boot, but it is valid to require a DT upgrade to get better
> performance (battery life) out of the platform.
This has got to be a blacklist then, and it seems like we've got to fix
simplefb to actually support managing the resources it's using. The
current plan does not seem at all sensible - we're talking about adding
hacks in every subsystem that provides resources and bodging DTs in
order to work around simplefb.
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next prev parent reply other threads:[~2014-09-08 13:49 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20140905115704.GO13515@arm.com>
2014-09-05 12:22 ` Unable to boot mainline on snow chromebook since 3.15 Will Deacon
2014-09-05 13:46 ` Ajay kumar
2014-09-05 13:56 ` Vivek Gautam
2014-09-08 11:17 ` Will Deacon
2014-09-05 14:12 ` Marc Zyngier
2014-09-05 20:25 ` Doug Anderson
2014-09-07 9:06 ` Javier Martinez Canillas
2014-09-07 15:01 ` Mark Brown
2014-09-07 15:51 ` Javier Martinez Canillas
2014-09-07 15:52 ` Tomasz Figa
2014-09-07 16:12 ` Javier Martinez Canillas
2014-09-07 16:19 ` Tomasz Figa
2014-09-07 16:40 ` Javier Martinez Canillas
2014-09-08 11:21 ` Will Deacon
2014-09-08 11:55 ` Javier Martinez Canillas
2014-09-08 12:46 ` Will Deacon
2014-09-08 12:20 ` Grant Likely
2014-09-08 13:49 ` Mark Brown [this message]
2014-09-08 14:05 ` Javier Martinez Canillas
2014-09-10 11:17 ` Will Deacon
2014-09-10 16:03 ` Doug Anderson
2014-09-10 16:23 ` Will Deacon
2014-09-08 15:58 ` Doug Anderson
2014-09-08 19:40 ` Grant Likely
2014-09-10 13:06 ` Olof Johansson
2014-09-10 14:31 ` Mark Brown
2014-09-10 14:56 ` Grant Likely
2014-09-10 15:39 ` Mark Brown
2014-09-10 16:29 ` Grant Likely
2014-09-10 16:45 ` Doug Anderson
2014-09-10 19:45 ` Mark Brown
2014-09-10 19:51 ` Doug Anderson
2014-09-10 16:57 ` Mark Brown
2014-09-11 9:22 ` Grant Likely
2014-09-11 18:03 ` Mark Brown
2014-09-11 22:54 ` Doug Anderson
2014-09-29 12:57 ` Thierry Reding
2014-09-29 13:12 ` Grant Likely
2014-09-29 16:37 ` Mark Brown
2014-09-30 6:12 ` Thierry Reding
2014-09-29 20:46 ` Maxime Ripard
2014-09-10 16:36 ` Olof Johansson
2014-09-10 18:17 ` Mark Brown
2014-09-11 9:06 ` Grant Likely
2014-09-11 16:16 ` Mark Brown
2014-09-08 4:36 ` Doug Anderson
2014-09-08 6:09 ` Javier Martinez Canillas
2014-09-08 15:55 ` Doug Anderson
2014-09-08 16:07 ` Will Deacon
2014-09-08 16:12 ` Doug Anderson
2014-09-08 10:20 ` Mark Brown
2014-09-08 4:43 ` Doug Anderson
2015-01-30 4:56 bruce m beach
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