From: Thierry Reding <thierry.reding@avionic-design.de>
To: "Terje Bergström" <tbergstrom@nvidia.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>,
"linux-tegra@vger.kernel.org" <linux-tegra@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/2] ARM: tegra: Add Tegra20 host1x support
Date: Wed, 14 Nov 2012 16:33:48 +0100 [thread overview]
Message-ID: <20121114153348.GA32208@avionic-0098.mockup.avionic-design.de> (raw)
In-Reply-To: <50A3B8DD.7010607@nvidia.com>
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On Wed, Nov 14, 2012 at 05:29:33PM +0200, Terje Bergström wrote:
> On 14.11.2012 17:01, Thierry Reding wrote:
> > Funny. I just tested with this line removed and I also get the freeze.
> > With the line I don't get the freeze. Does the freeze only occur with
> > additional patches on top? If so I think we should keep the line in for
> > now because it is what most people have tested against and which has
> > proven to work. We can fix any remaining issues with host1x specific
> > things when actual patches emerge.
>
> I was running with 2D acceleration support added on top of your
> gitorious tree. It was the nvhost driver, which probes host1x, and
> initializes it. In middle of initialization (writing zeros to sync point
> registers), host1x stops responding.
>
> I agree, if removing the line causes regression, keep it and let's debug
> this issue later.
>
> It might be that we have a difference in bootloader. Does your
> bootloader enable display? U-Boot and fastboot do, and it might be that
> has an effect. They would need to initialize host1x clocks, and it might
> be that kernel initialization somehow clashes with bootloader's.
I use an upstream U-Boot version that performs no display initialization
on the board that I use. Perhaps that indeed causes your setup to work
properly but not mine.
Thierry
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next prev parent reply other threads:[~2012-11-14 15:33 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-09 13:20 [PATCH 0/2] Device tree updates for host1x support Thierry Reding
2012-11-09 13:20 ` [PATCH 1/2] ARM: tegra: Add Tegra20 " Thierry Reding
2012-11-12 9:39 ` Mark Zhang
2012-11-13 4:38 ` Mark Zhang
2012-11-13 6:41 ` Thierry Reding
2012-11-13 7:37 ` Mark Zhang
2012-11-13 7:45 ` Mark Zhang
2012-11-13 7:52 ` Thierry Reding
2012-11-13 8:00 ` Mark Zhang
2012-11-13 8:04 ` Thierry Reding
2012-11-13 8:29 ` Mark Zhang
2012-11-14 8:35 ` Terje Bergström
2012-11-14 8:49 ` Thierry Reding
2012-11-14 10:23 ` Terje Bergström
2012-11-14 10:54 ` Thierry Reding
2012-11-14 16:19 ` Stephen Warren
2012-11-14 16:45 ` Terje Bergström
2012-11-14 18:12 ` Stephen Warren
2012-11-14 20:04 ` Thierry Reding
2012-11-14 20:15 ` Stephen Warren
2012-11-14 20:21 ` Thierry Reding
2012-11-15 6:56 ` Terje Bergström
2012-11-15 7:11 ` Thierry Reding
2012-11-14 15:01 ` Thierry Reding
2012-11-14 15:29 ` Terje Bergström
2012-11-14 15:33 ` Thierry Reding [this message]
2012-11-09 13:20 ` [PATCH 2/2] ARM: tegra: Add Tegra30 " Thierry Reding
2012-11-13 4:37 ` Mark Zhang
2012-11-13 7:45 ` Mark Zhang
2012-11-13 7:53 ` Thierry Reding
2012-11-09 17:34 ` [PATCH 0/2] Device tree updates for " Stephen Warren
2012-11-09 18:44 ` Thierry Reding
2012-11-09 21:10 ` Stephen Warren
2012-11-15 8:21 ` Prashant Gaikwad
2012-11-15 8:50 ` Thierry Reding
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