From: Thierry Reding <thierry.reding-RM9K5IK7kjKj5M59NBduVrNAH6kLmebB@public.gmane.org>
To: Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
Cc: "Lucas Stach" <dev-8ppwABl0HbeELgA04lAiVw@public.gmane.org>,
"David Airlie" <airlied-cv59FeDIM0c@public.gmane.org>,
"Joerg Roedel" <joerg.roedel-5C7GfCeVMHo@public.gmane.org>,
"devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org"
<devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org>,
"Mark Brown"
<broonie-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>,
"Wolfram Sang" <w.sang-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>,
"dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org"
<dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>,
"iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org"
<iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>,
"linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"Rob Herring"
<rob.herring-bsGFqQB8/DxBDgjK7y7TUQ@public.gmane.org>,
"Ben Dooks" <ben-linux-elnMNo+KYs3YtjvyW6yDsg@public.gmane.org>,
"Colin Cross" <ccross-z5hGa2qSFaRBDgjK7y7TUQ@public.gmane.org>,
"linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"Terje Bergström"
<tbergstrom-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>,
"Jon Mayo" <jmayo-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>,
"Liam Girdwood" <lrg-l0cyMroinI0@public.gmane.org>,
"Hiroshi Doyu" <hdoyu-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
Subject: Re: [RFC v2 5/5] drm: Add NVIDIA Tegra support
Date: Mon, 21 May 2012 13:05:14 +0200 [thread overview]
Message-ID: <20120521110514.GC27686@avionic-0098.mockup.avionic-design.de> (raw)
In-Reply-To: <4FA7F80F.5090002-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
[-- Attachment #1.1: Type: text/plain, Size: 1188 bytes --]
* Stephen Warren wrote:
> On 05/07/2012 02:50 AM, Terje Bergström wrote:
> > Hi Thierry,
> >
> > I have still lots of questions regarding how device trees work. I'm now
> > just trying to match the device tree structure with hardware - let me
> > know if that goes wrong.
> >
> > There's a hierarchy in the hardware, which should be represented in the
> > device trees. All of the hardware are client modules for host1x - with
> > the exception of host1x obviously. CPU has two methods for accessing the
> > hardware: clients' register aperture and host1x channels. Both of these
> > operate via host1x hardware.
> >
> > We should define host1x bus in the device tree, and move all nodes
> > except host1x under that bus.
>
> I think the host1x node /is/ that bus.
I agree. It's really just a "simple-bus" kind of bus. Except that it'll need
another compatible value to make the host1x driver bind to it. But we should
be able to make it work without creating a completely new bus. I guess the
"ranges" property could specify 0x54000000 as the base address and child
nodes could use offsets relative to that. Maybe even that is overkill,
though.
Thierry
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next prev parent reply other threads:[~2012-05-21 11:05 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-25 9:44 [RFC v2 0/5] Add NVIDIA Tegra DRM support Thierry Reding
[not found] ` <1335347102-14905-1-git-send-email-thierry.reding-RM9K5IK7kjKj5M59NBduVrNAH6kLmebB@public.gmane.org>
2012-04-25 9:44 ` [RFC v2 1/5] iommu: Include linux/types.h Thierry Reding
2012-04-25 9:44 ` [RFC v2 2/5] tps6586x: Add device tree support Thierry Reding
[not found] ` <1335347102-14905-3-git-send-email-thierry.reding-RM9K5IK7kjKj5M59NBduVrNAH6kLmebB@public.gmane.org>
2012-04-25 10:10 ` Mark Brown
[not found] ` <20120425101031.GH3195-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
2012-04-25 10:14 ` Thierry Reding
[not found] ` <20120425101429.GA5085-RM9K5IK7kjIQXX3q8xo1gnVAuStQJXxyR5q1nwbD4aMs9pC9oP6+/A@public.gmane.org>
2012-04-25 10:41 ` Thierry Reding
[not found] ` <20120425104147.GB5085-RM9K5IK7kjIQXX3q8xo1gnVAuStQJXxyR5q1nwbD4aMs9pC9oP6+/A@public.gmane.org>
2012-04-25 10:47 ` Mark Brown
[not found] ` <20120425104742.GA20492-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
2012-04-25 11:14 ` Thierry Reding
2012-04-25 9:45 ` [RFC v2 3/5] i2c: Add of_i2c_get_adapter() function Thierry Reding
[not found] ` <1335347102-14905-4-git-send-email-thierry.reding-RM9K5IK7kjKj5M59NBduVrNAH6kLmebB@public.gmane.org>
2012-04-25 15:36 ` Stephen Warren
[not found] ` <4F981A09.2020304-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2012-04-25 16:39 ` Thierry Reding
2012-04-25 9:45 ` [RFC v2 4/5] drm: fixed: Add dfixed_frac Thierry Reding
2012-04-25 9:45 ` [RFC v2 5/5] drm: Add NVIDIA Tegra support Thierry Reding
[not found] ` <1335347102-14905-6-git-send-email-thierry.reding-RM9K5IK7kjKj5M59NBduVrNAH6kLmebB@public.gmane.org>
2012-05-03 21:22 ` Stephen Warren
[not found] ` <4FA2F702.6040701-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2012-05-21 10:55 ` Thierry Reding
2012-05-07 8:50 ` Terje Bergström
[not found] ` <4FA78CBD.5010606-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-05-07 16:27 ` Stephen Warren
[not found] ` <4FA7F80F.5090002-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2012-05-21 11:05 ` Thierry Reding [this message]
[not found] ` <20120521110514.GC27686-RM9K5IK7kjIQXX3q8xo1gnVAuStQJXxyR5q1nwbD4aMs9pC9oP6+/A@public.gmane.org>
2012-05-21 11:37 ` Terje Bergström
[not found] ` <4FBA28FD.2060504-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-05-21 13:58 ` Thierry Reding
[not found] ` <20120521135838.GA15046-RM9K5IK7kjIQXX3q8xo1gnVAuStQJXxyR5q1nwbD4aMs9pC9oP6+/A@public.gmane.org>
2012-05-22 6:19 ` Terje Bergström
2012-05-22 7:01 ` Jon Mayo
2012-04-25 12:27 ` [RFC v2 0/5] Add NVIDIA Tegra DRM support Thierry Reding
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