From: Rob Herring <robherring2@gmail.com>
To: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Cc: Wolfgang Denk <wd@denx.de>,
"Fernandes, Joel A" <joelagnel@ti.com>,
Russell King - ARM Linux <linux@arm.linux.org.uk>,
linux-kbuild@vger.kernel.org, tony@atomide.com,
Nicolas Pitre <nico@fluxnic.net>,
Grant Likely <grant.likely@secretlab.ca>,
u-boot@lists.denx.de, Tom Rini <trini@ti.com>,
Grant Likely <glikely@secretlab.ca>,
OMAP List <linux-omap@vger.kernel.org>,
ARM Kernel List <linux-arm-kernel@lists.infradead.org>
Subject: Re: [U-Boot] [RFC] Kbuild support for ARM FIT images
Date: Thu, 21 Feb 2013 21:32:39 -0600 [thread overview]
Message-ID: <5126E6D7.4020004@gmail.com> (raw)
In-Reply-To: <20130222022212.GB11169@obsidianresearch.com>
On 02/21/2013 08:22 PM, Jason Gunthorpe wrote:
> On Thu, Feb 21, 2013 at 06:19:05PM -0600, Rob Herring wrote:
>
>> The desired FPGA use case is DT updates after booting the kernel. This
>> has nothing to do with FIT images. And if the FPGA tools generate the
>> DTB, then it is certainly not tied to the kernel.
>
> Completely unrelated, but do you have any pointer for how to do this?
> Hot plugging a 'dtb fragment' into the kernel would be really handy..
>
Look at "Introducing Device Tree Overlays" on devicetree-discuss and lkml.
> I'm thinking something like adding a tree below a PCI controller
> describing a PCI device and sub nodes, similar to what Thierry was
> doing for his Avionics. How would interrupt maps and phandles be
> managed across the main dtb and the 'hot plugged' dtb?
Generally you don't describe the devices on PCI unless there are
non-discoverable aspects like a sideband gpio.
Rob
WARNING: multiple messages have this Message-ID (diff)
From: robherring2@gmail.com (Rob Herring)
To: linux-arm-kernel@lists.infradead.org
Subject: [U-Boot] [RFC] Kbuild support for ARM FIT images
Date: Thu, 21 Feb 2013 21:32:39 -0600 [thread overview]
Message-ID: <5126E6D7.4020004@gmail.com> (raw)
In-Reply-To: <20130222022212.GB11169@obsidianresearch.com>
On 02/21/2013 08:22 PM, Jason Gunthorpe wrote:
> On Thu, Feb 21, 2013 at 06:19:05PM -0600, Rob Herring wrote:
>
>> The desired FPGA use case is DT updates after booting the kernel. This
>> has nothing to do with FIT images. And if the FPGA tools generate the
>> DTB, then it is certainly not tied to the kernel.
>
> Completely unrelated, but do you have any pointer for how to do this?
> Hot plugging a 'dtb fragment' into the kernel would be really handy..
>
Look at "Introducing Device Tree Overlays" on devicetree-discuss and lkml.
> I'm thinking something like adding a tree below a PCI controller
> describing a PCI device and sub nodes, similar to what Thierry was
> doing for his Avionics. How would interrupt maps and phandles be
> managed across the main dtb and the 'hot plugged' dtb?
Generally you don't describe the devices on PCI unless there are
non-discoverable aspects like a sideband gpio.
Rob
WARNING: multiple messages have this Message-ID (diff)
From: Rob Herring <robherring2@gmail.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [RFC] Kbuild support for ARM FIT images
Date: Thu, 21 Feb 2013 21:32:39 -0600 [thread overview]
Message-ID: <5126E6D7.4020004@gmail.com> (raw)
In-Reply-To: <20130222022212.GB11169@obsidianresearch.com>
On 02/21/2013 08:22 PM, Jason Gunthorpe wrote:
> On Thu, Feb 21, 2013 at 06:19:05PM -0600, Rob Herring wrote:
>
>> The desired FPGA use case is DT updates after booting the kernel. This
>> has nothing to do with FIT images. And if the FPGA tools generate the
>> DTB, then it is certainly not tied to the kernel.
>
> Completely unrelated, but do you have any pointer for how to do this?
> Hot plugging a 'dtb fragment' into the kernel would be really handy..
>
Look at "Introducing Device Tree Overlays" on devicetree-discuss and lkml.
> I'm thinking something like adding a tree below a PCI controller
> describing a PCI device and sub nodes, similar to what Thierry was
> doing for his Avionics. How would interrupt maps and phandles be
> managed across the main dtb and the 'hot plugged' dtb?
Generally you don't describe the devices on PCI unless there are
non-discoverable aspects like a sideband gpio.
Rob
next prev parent reply other threads:[~2013-02-22 3:32 UTC|newest]
Thread overview: 178+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-21 1:37 [RFC] Kbuild support for ARM FIT images Joel A Fernandes
2013-02-21 1:37 ` [U-Boot] " Joel A Fernandes
2013-02-21 1:37 ` Joel A Fernandes
2013-02-21 4:26 ` Stephen Warren
2013-02-21 4:26 ` [U-Boot] " Stephen Warren
2013-02-21 4:26 ` Stephen Warren
2013-02-21 7:15 ` Joel A Fernandes
2013-02-21 7:15 ` [U-Boot] " Joel A Fernandes
2013-02-21 7:15 ` Joel A Fernandes
2013-02-21 18:58 ` Stephen Warren
2013-02-21 18:58 ` [U-Boot] " Stephen Warren
2013-02-21 18:58 ` Stephen Warren
2013-02-21 19:18 ` Tom Rini
2013-02-21 19:18 ` Tom Rini
2013-02-21 13:29 ` Tom Rini
2013-02-21 13:29 ` [U-Boot] " Tom Rini
2013-02-21 13:29 ` Tom Rini
2013-02-21 19:03 ` Stephen Warren
2013-02-21 19:03 ` [U-Boot] " Stephen Warren
2013-02-21 19:03 ` Stephen Warren
2013-02-21 10:37 ` Russell King - ARM Linux
2013-02-21 10:37 ` [U-Boot] " Russell King - ARM Linux
2013-02-21 10:37 ` Russell King - ARM Linux
2013-02-21 13:20 ` Tom Rini
2013-02-21 13:20 ` [U-Boot] " Tom Rini
2013-02-21 13:20 ` Tom Rini
2013-02-21 13:46 ` Russell King - ARM Linux
2013-02-21 13:46 ` [U-Boot] " Russell King - ARM Linux
2013-02-21 13:46 ` Russell King - ARM Linux
2013-02-21 14:08 ` Tom Rini
2013-02-21 14:08 ` [U-Boot] " Tom Rini
2013-02-21 14:08 ` Tom Rini
2013-02-21 14:37 ` Russell King - ARM Linux
2013-02-21 14:37 ` Russell King - ARM Linux
2013-02-21 14:46 ` Tom Rini
2013-02-21 14:46 ` Tom Rini
2013-02-21 17:25 ` [U-Boot] " Nicolas Pitre
2013-02-21 17:25 ` Nicolas Pitre
2013-02-21 17:25 ` Nicolas Pitre
2013-02-21 17:40 ` Tom Rini
2013-02-21 17:40 ` Tom Rini
2013-02-21 17:40 ` Tom Rini
2013-02-21 17:40 ` Tom Rini
2013-02-21 19:21 ` [U-Boot] " Nicolas Pitre
2013-02-21 19:21 ` Nicolas Pitre
2013-02-21 19:21 ` Nicolas Pitre
2013-02-21 19:37 ` Stephen Warren
2013-02-21 19:37 ` Stephen Warren
2013-02-21 19:37 ` Stephen Warren
2013-02-21 19:57 ` Wolfgang Denk
2013-02-21 19:57 ` Wolfgang Denk
2013-02-21 19:57 ` Wolfgang Denk
2013-02-21 20:05 ` Stephen Warren
2013-02-21 20:05 ` Stephen Warren
2013-02-21 20:05 ` Stephen Warren
2013-02-21 20:18 ` Wolfgang Denk
2013-02-21 20:18 ` Wolfgang Denk
2013-02-21 20:18 ` Wolfgang Denk
2013-02-21 21:18 ` Nicolas Pitre
2013-02-21 21:18 ` Nicolas Pitre
2013-02-21 21:18 ` Nicolas Pitre
2013-02-22 0:10 ` Stephen Warren
2013-02-22 0:10 ` Stephen Warren
2013-02-22 0:10 ` Stephen Warren
2013-02-22 0:39 ` Russell King - ARM Linux
2013-02-22 0:39 ` Russell King - ARM Linux
2013-02-22 0:39 ` Russell King - ARM Linux
2013-02-22 20:48 ` Stephen Warren
2013-02-22 20:48 ` Stephen Warren
2013-02-22 20:48 ` Stephen Warren
2013-02-21 18:27 ` Jason Gunthorpe
2013-02-21 18:27 ` Jason Gunthorpe
2013-02-21 18:27 ` Jason Gunthorpe
2013-02-21 19:08 ` Russell King - ARM Linux
2013-02-21 19:08 ` Russell King - ARM Linux
2013-02-21 19:08 ` Russell King - ARM Linux
2013-02-21 20:15 ` Jason Gunthorpe
2013-02-21 20:15 ` Jason Gunthorpe
2013-02-21 20:15 ` Jason Gunthorpe
2013-02-21 19:57 ` Nicolas Pitre
2013-02-21 19:57 ` Nicolas Pitre
2013-02-21 19:57 ` Nicolas Pitre
2013-02-21 21:14 ` Jason Gunthorpe
2013-02-21 21:14 ` Jason Gunthorpe
2013-02-21 21:14 ` Jason Gunthorpe
2013-02-21 22:05 ` Nicolas Pitre
2013-02-21 22:05 ` Nicolas Pitre
2013-02-21 22:05 ` Nicolas Pitre
2013-02-21 23:11 ` Jason Gunthorpe
2013-02-21 23:11 ` Jason Gunthorpe
2013-02-21 23:11 ` Jason Gunthorpe
2013-02-21 23:50 ` Stephen Warren
2013-02-21 23:50 ` Stephen Warren
2013-02-21 23:50 ` Stephen Warren
2013-02-22 0:19 ` Scott Wood
2013-02-22 0:19 ` Scott Wood
2013-02-22 0:19 ` Scott Wood
2013-02-22 0:19 ` Scott Wood
2013-02-22 2:39 ` [U-Boot] " Jason Gunthorpe
2013-02-22 2:39 ` Jason Gunthorpe
2013-02-22 0:27 ` Russell King - ARM Linux
2013-02-22 0:27 ` Russell King - ARM Linux
2013-02-22 0:27 ` Russell King - ARM Linux
2013-02-22 0:41 ` Russell King - ARM Linux
2013-02-22 0:41 ` Russell King - ARM Linux
2013-02-22 2:11 ` Jason Gunthorpe
2013-02-22 2:11 ` Jason Gunthorpe
2013-02-21 23:18 ` Wolfgang Denk
2013-02-21 23:18 ` Wolfgang Denk
2013-02-21 23:18 ` Wolfgang Denk
2013-02-21 23:28 ` Jason Gunthorpe
2013-02-21 23:28 ` Jason Gunthorpe
2013-02-21 23:28 ` Jason Gunthorpe
2013-02-22 0:19 ` Rob Herring
2013-02-22 0:19 ` Rob Herring
2013-02-22 0:19 ` Rob Herring
2013-02-22 0:19 ` Rob Herring
2013-02-22 2:22 ` [U-Boot] " Jason Gunthorpe
2013-02-22 2:22 ` Jason Gunthorpe
2013-02-22 2:22 ` Jason Gunthorpe
2013-02-22 3:32 ` Rob Herring [this message]
2013-02-22 3:32 ` Rob Herring
2013-02-22 3:32 ` Rob Herring
2013-02-22 7:56 ` Jason Kridner
2013-02-22 7:56 ` Jason Kridner
2013-02-22 17:43 ` Jason Gunthorpe
2013-02-22 17:43 ` Jason Gunthorpe
2013-02-22 17:43 ` Jason Gunthorpe
2013-02-22 6:55 ` Wolfgang Denk
2013-02-22 6:55 ` Wolfgang Denk
2013-02-22 6:55 ` Wolfgang Denk
2013-02-21 23:45 ` Stephen Warren
2013-02-21 23:45 ` Stephen Warren
2013-02-21 23:45 ` Stephen Warren
2013-02-22 0:29 ` Russell King - ARM Linux
2013-02-22 0:29 ` Russell King - ARM Linux
2013-02-22 0:29 ` Russell King - ARM Linux
2013-02-21 20:56 ` Peter Korsgaard
2013-02-21 20:56 ` Peter Korsgaard
2013-02-21 20:56 ` Peter Korsgaard
2013-02-21 17:37 ` Wolfgang Denk
2013-02-21 17:37 ` [U-Boot] " Wolfgang Denk
2013-02-21 17:37 ` Wolfgang Denk
2013-02-21 18:33 ` Russell King - ARM Linux
2013-02-21 18:33 ` Russell King - ARM Linux
2013-02-23 8:38 ` Joel A Fernandes
2013-02-23 8:38 ` [U-Boot] " Joel A Fernandes
2013-02-23 8:38 ` Joel A Fernandes
2013-02-22 16:00 ` Olof Johansson
2013-02-22 16:00 ` [U-Boot] " Olof Johansson
2013-02-22 16:00 ` Olof Johansson
2013-03-18 16:36 ` Pavel Machek
2013-03-18 16:36 ` [U-Boot] " Pavel Machek
2013-03-18 16:36 ` Pavel Machek
2013-03-18 16:44 ` Russell King - ARM Linux
2013-03-18 16:44 ` [U-Boot] " Russell King - ARM Linux
2013-03-18 16:44 ` Russell King - ARM Linux
2013-03-18 17:49 ` Pavel Machek
2013-03-18 17:49 ` [U-Boot] " Pavel Machek
2013-03-18 17:49 ` Pavel Machek
2013-03-18 17:57 ` Russell King - ARM Linux
2013-03-18 17:57 ` [U-Boot] " Russell King - ARM Linux
2013-03-18 17:57 ` Russell King - ARM Linux
2013-03-18 18:04 ` Pavel Machek
2013-03-18 18:04 ` [U-Boot] " Pavel Machek
2013-03-18 18:04 ` Pavel Machek
2013-03-18 18:14 ` [U-Boot] " Stephen Warren
2013-03-18 18:14 ` Stephen Warren
2013-03-18 18:14 ` Stephen Warren
2013-03-18 19:57 ` Wolfgang Denk
2013-03-18 19:57 ` Wolfgang Denk
2013-03-18 19:57 ` Wolfgang Denk
2013-03-18 19:51 ` Wolfgang Denk
2013-03-18 19:51 ` [U-Boot] " Wolfgang Denk
2013-03-18 19:51 ` Wolfgang Denk
2013-03-18 18:29 ` [U-Boot] " Tom Rini
2013-03-18 18:29 ` Tom Rini
2013-03-18 18:29 ` Tom Rini
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