linux-kernel - Re: [PATCH 1/2] drm: Add NVIDIA Tegra20 support

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Message-ID: <50A1FE01.5090808@nvidia.com>
Date:	Tue, 13 Nov 2012 10:00:01 +0200
From:	Terje Bergström <tbergstrom@...dia.com>
To:	Thierry Reding <thierry.reding@...onic-design.de>
CC:	Dave Airlie <airlied@...hat.com>,
	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	"devicetree-discuss@...ts.ozlabs.org" 
	<devicetree-discuss@...ts.ozlabs.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] drm: Add NVIDIA Tegra20 support

On 09.11.2012 15:59, Thierry Reding wrote:
> This commit adds a KMS driver for the Tegra20 SoC. This includes basic
> support for host1x and the two display controllers found on the Tegra20
> SoC. Each display controller can drive a separate RGB/LVDS output.

Thanks Thierry for the hard work. I noticed the same thing Stephen
noticed earlier - I couldn't compile the driver.

Other than that, there were a couple of differences to the tree we've
worked with and tested earlier: Tegra30 support was dropped and as a
consequence so was IOMMU support.

I'm perfectly fine with leaving out IOMMU support, because we had some
problems with that and dma-buf. We were getting a bit worried about how
to implement mapping and re-mapping dma-buf's without causing duplicate
IOMMU mappings.

Best regards,
Terje
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