Date: Wed, 14 Nov 2012 21:21:54 +0100
From: Thierry Reding <thierry.reding@avionic-design.de>
To: Stephen Warren <swarren@wwwdotorg.org>
Cc: Terje =?utf-8?Q?Bergstr=C3=B6m?= <tbergstrom@nvidia.com>,
        "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
Message-ID: <20121114202154.GA10742@avionic-0098.mockup.avionic-design.de>
References: <1352467202-27903-1-git-send-email-thierry.reding@avionic-design.de>
 <1352467202-27903-2-git-send-email-thierry.reding@avionic-design.de>
 <50A357D3.9080002@nvidia.com>
 <20121114084931.GA31837@avionic-0098.mockup.avionic-design.de>
 <50A3712E.7000104@nvidia.com>
 <20121114105406.GA31455@avionic-0098.mockup.avionic-design.de>
 <50A3C485.7080704@wwwdotorg.org>
 <20121114200415.GA10335@avionic-0098.mockup.avionic-design.de>
 <50A3FBFA.3080008@wwwdotorg.org>
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On Wed, Nov 14, 2012 at 01:15:54PM -0700, Stephen Warren wrote:
> On 11/14/2012 01:04 PM, Thierry Reding wrote:
> ...
> > According to tegra20_clocks_data.c, the maximum clock frequency
> > for host1x is 166 MHz, so 216 is probably not a good idea. 150 MHz
> > sounds sensible, though.
>=20
> As a general rule, I wouldn't rely on the upstream clock driver to
> specify accurate maximum clock rates at the moment. Our downstream
> kernel is more likely to be accurate. Still, upstream might be correct
> here already...

I just checked and the downstream kernel has the same maximum clock rate
for host1x.

Thierry

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