From: grant.likely@secretlab.ca (Grant Likely)
To: linux-arm-kernel@lists.infradead.org
Subject: Unable to boot mainline on snow chromebook since 3.15
Date: Thu, 11 Sep 2014 10:06:08 +0100 [thread overview]
Message-ID: <20140911090608.598CFC40862@trevor.secretlab.ca> (raw)
In-Reply-To: <20140910143144.GF7960@sirena.org.uk>
On Wed, 10 Sep 2014 15:31:44 +0100, Mark Brown <broonie@kernel.org> wrote:
> On Wed, Sep 10, 2014 at 06:06:46AM -0700, Olof Johansson wrote:
> > On Mon, Sep 8, 2014 at 12:40 PM, Grant Likely <grant.likely@secretlab.ca> wrote:
>
> > > Well, lets see... We've got a real user complaining about a platform
> > > that used to work on mainline, and no longer does. The only loophole
> > > for ignoring breakage is if there nobody cares that it is broken. That
> > > currently isn't the case. So even though it's based on a patch that
> > > has "DO NOT SUBMIT" in large friendly letters on the front cover, it
> > > doesn't change the situation that mainline has a regression.
>
> > Yeah, I'm with you on this Grant, it doesn't matter what the patch is
> > labelled as.
>
> > One way to deal with this could be to add a quirk at boot time --
> > looking for the simplefb and if found, modifies the regulators to keep
> > them on. That'd go in the kernel, not in firmware.
>
> Well, we should also be fixing simplefb to manage the resources it uses
> though that doesn't clean up after the broken DTs that are currently
> deployed.
>
> As well as the regulators we'll also need to fix the clocks. If we're
> going to start adding these fixups perhaps we want to consider having a
> wrapper stage that deals with rewriting DTs prior to trying to use them?
> I'm not sure if it makes much difference but there's overlap with other
> tools like the ATAGs conversion wrapper and building separately would
> let the fixup code run early without directly going into the early init
> code (which seems a bit scary).
We've already got a dt fixup hook in the machine struct, created for
exactly this reason. Fixing an incorrect DT provided by firmware:
arch/arm/include/asm/mach/arch.h:
struct machine_desc {
...
void (*dt_fixup)(void);
...
g.
next prev parent reply other threads:[~2014-09-11 9:06 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
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 [this message]
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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