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From: Russell King - ARM Linux <linux@armlinux.org.uk>
To: Frank Rowand <frowand.list@gmail.com>
Cc: mark.rutland@arm.com, Rob Herring <robh@kernel.org>,
	devicetree@vger.kernel.org, Tony Lindgren <tony@atomide.com>,
	Tero Kristo <t-kristo@ti.com>,
	trini@konsulko.com, wmills@ti.com,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>
Subject: Re: [RFC 12/13] ARM: dts: ti: add dra71-evm FIT description file
Date: Tue, 29 May 2018 23:51:14 +0100	[thread overview]
Message-ID: <20180529225114.GO17671@n2100.armlinux.org.uk> (raw)
In-Reply-To: <a43ce521-ed7f-6126-4ebf-5e0e303d00a3@gmail.com>

On Tue, May 29, 2018 at 03:45:12PM -0700, Frank Rowand wrote:
> If the kernel applies the overlay, an alternative to drivers is that the
> kernel could receive the overlay(s) in a similar manner as the method it
> currently receives the base devicetree.  (The overlay(s) could be
> appended to the base devicetree, a wrapper could be placed around the

No wrappers, sorry.  We already have too many places in the Linux
kernel and its decompressor that try to work out whether a device
tree or ATAGs are present and how large, and that is done in assembly
code.  We don't need more complexity to deal with some kind of
wrapping of device trees as well.

-- 
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
FTTC broadband for 0.8mile line in suburbia: sync at 8.8Mbps down 630kbps up
According to speedtest.net: 8.21Mbps down 510kbps up

WARNING: multiple messages have this Message-ID (diff)
From: linux@armlinux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC 12/13] ARM: dts: ti: add dra71-evm FIT description file
Date: Tue, 29 May 2018 23:51:14 +0100	[thread overview]
Message-ID: <20180529225114.GO17671@n2100.armlinux.org.uk> (raw)
In-Reply-To: <a43ce521-ed7f-6126-4ebf-5e0e303d00a3@gmail.com>

On Tue, May 29, 2018 at 03:45:12PM -0700, Frank Rowand wrote:
> If the kernel applies the overlay, an alternative to drivers is that the
> kernel could receive the overlay(s) in a similar manner as the method it
> currently receives the base devicetree.  (The overlay(s) could be
> appended to the base devicetree, a wrapper could be placed around the

No wrappers, sorry.  We already have too many places in the Linux
kernel and its decompressor that try to work out whether a device
tree or ATAGs are present and how large, and that is done in assembly
code.  We don't need more complexity to deal with some kind of
wrapping of device trees as well.

-- 
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
FTTC broadband for 0.8mile line in suburbia: sync at 8.8Mbps down 630kbps up
According to speedtest.net: 8.21Mbps down 510kbps up

  reply	other threads:[~2018-05-29 22:51 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-17  9:10 [RFC 00/13] ARM: dts: DT overlay support infra + some data Tero Kristo
2018-04-17  9:10 ` [RFC 01/13] ARM: dts: allow building .dtb files under platform subdirs Tero Kristo
2018-04-19  0:02   ` Rob Herring
2018-04-17  9:10 ` [RFC 02/13] ARM: dts: add support for building DT overlays Tero Kristo
2018-04-17  9:10 ` [RFC 03/13] ARM: dts: add subdir for TI SoC DT files Tero Kristo
2018-04-17  9:10 ` [RFC 04/13] kbuild: add support for building %.dtbo targets Tero Kristo
2018-04-18 14:16   ` Geert Uytterhoeven
2018-04-17  9:10 ` [RFC 05/13] ARM: dts: ti: add support for building .dtb files containing symbols Tero Kristo
2018-04-18 14:20   ` Geert Uytterhoeven
2018-04-18 19:07     ` Tero Kristo
2018-04-18 22:43     ` Rob Herring
2018-04-19  6:36       ` Tero Kristo
2018-04-19 15:26         ` Rob Herring
2018-04-19 18:00           ` Tero Kristo
2018-04-17  9:10 ` [RFC 06/13] ARM: dts: am57xx-evm: add AM57xx-evm DT overlay Tero Kristo
2018-04-18 14:36   ` Geert Uytterhoeven
2018-04-18 19:12     ` Tero Kristo
2018-04-18 19:15       ` Russell King
2018-04-20 13:27         ` Geert Uytterhoeven
2018-04-18 22:40     ` Rob Herring
2018-04-19  0:19   ` Rob Herring
2018-04-19  6:49     ` Tero Kristo
2018-04-20  1:31       ` Rob Herring
2018-04-17  9:10 ` [RFC 07/13] ARM: dts: ti: add camera overlays Tero Kristo
2018-04-17  9:10 ` [RFC 08/13] ARM: dts: ti: add dra71-evm overlays Tero Kristo
2018-04-17  9:10 ` [RFC 09/13] kbuild: add support for generating FIT images Tero Kristo
2018-04-17  9:10 ` [RFC 10/13] ARM: dts: add FIT image build support for ARM architecture Tero Kristo
2018-04-17  9:10 ` [RFC 11/13] ARM: dts: ti: add FIT image dependencies Tero Kristo
2018-04-17  9:10 ` [RFC 12/13] ARM: dts: ti: add dra71-evm FIT description file Tero Kristo
2018-04-17  9:29   ` Russell King
2018-04-17  9:34     ` Tero Kristo
2018-04-17 14:49       ` Tony Lindgren
2018-05-21  6:57         ` Tero Kristo
2018-05-21  6:57           ` Tero Kristo
2018-05-22 20:01           ` Rob Herring
2018-05-22 20:01             ` Rob Herring
2018-05-23  5:55             ` Tero Kristo
2018-05-23  5:55               ` Tero Kristo
2018-05-23 14:13               ` Rob Herring
2018-05-23 14:13                 ` Rob Herring
2018-05-23 18:37               ` Tony Lindgren
2018-05-23 18:37                 ` Tony Lindgren
2018-05-29 17:05             ` Frank Rowand
2018-05-29 17:05               ` Frank Rowand
2018-05-29 17:33               ` Russell King - ARM Linux
2018-05-29 17:33                 ` Russell King - ARM Linux
2018-05-29 22:45                 ` Frank Rowand
2018-05-29 22:45                   ` Frank Rowand
2018-05-29 22:51                   ` Russell King - ARM Linux [this message]
2018-05-29 22:51                     ` Russell King - ARM Linux
2018-04-17  9:10 ` [RFC 13/13] ARM: dts: ti: add am57xx-evm " Tero Kristo
2018-04-17  9:18 ` [RFC 00/13] ARM: dts: DT overlay support infra + some data Russell King

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