Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754697Ab3HAKS7 (ORCPT ); Thu, 1 Aug 2013 06:18:59 -0400 Received: from bombadil.infradead.org ([198.137.202.9]:43808 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753801Ab3HAKS6 (ORCPT ); Thu, 1 Aug 2013 06:18:58 -0400 Message-ID: <1375352315.22084.138.camel@shinybook.infradead.org> Subject: Re: [Ksummit-2013-discuss] DT bindings as ABI [was: Do we have people interested in device tree janitoring / cleanup?] From: David Woodhouse To: "jonsmirl@gmail.com" Cc: Russell King - ARM Linux , Mark Rutland , "devicetree@vger.kernel.org" , "ksummit-2013-discuss@lists.linuxfoundation.org" , Ian Campbell , Pawel Moll , Richard Cochran , "linux-kernel@vger.kernel.org" , "rob.herring@calxeda.com" , Tomasz Figa , Jason Gunthorpe , Domenico Andreoli , mbizon@freebox.fr, Dave P Martin , "linux-arm-kernel@lists.infradead.org" Date: Thu, 01 Aug 2013 11:18:35 +0100 In-Reply-To: References: <20130725175702.GC22291@e106331-lin.cambridge.arm.com> <1999586.84BnWE5EUh@thinkpad> <20130731191209.GA8027@netboy> <1409617.9untvfnOTJ@flatron> <20130731200017.GC8027@netboy> <20130731201457.GA24642@n2100.arm.linux.org.uk> <20130731204817.GC24642@n2100.arm.linux.org.uk> Content-Type: multipart/signed; micalg="sha-1"; protocol="application/x-pkcs7-signature"; boundary="=-Rn99hzy+6uwgg/lrBJKF" X-Mailer: Evolution 3.8.4 (3.8.4-1.fc19) Mime-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 9397 Lines: 148 --=-Rn99hzy+6uwgg/lrBJKF Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Wed, 2013-07-31 at 17:26 -0400, jonsmirl@gmail.com wrote: > Alternatively you may be of the belief that it is impossible to get > rid of the board specific code. But x86 doesn't have any of it, why > should ARM? The reason x86 doesn't have it is because it carries three decades worth of legacy baggage so that it can still look like a 1980s IBM PC when necessary. There *have* been some x86 platforms which abandon that legacy crap, and for those we *do* have board-specific code. (Is James still maintaining Voyager support? It feels very strange to talk about Voyager with it *not* being the 'legacy crap' in question...) We've even seen *recent* attempts to abandon the legacy crap in the embedded x86 space, which backtracked and added it all back again =E2=80=94= in part because x86 lacked any sane way to describe the hardware if it wasn't pretending to be a PC. ACPI doesn't cut it, and DT "wasn't invented here"... Unless you want the ARM world to settle on a strategy of "all the world is an Assabet", I'd be careful what you wish for... --=20 dwmw2 --=-Rn99hzy+6uwgg/lrBJKF Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIISxDCCBjQw ggQcoAMCAQICAR4wDQYJKoZIhvcNAQEFBQAwfTELMAkGA1UEBhMCSUwxFjAUBgNVBAoTDVN0YXJ0 Q29tIEx0ZC4xKzApBgNVBAsTIlNlY3VyZSBEaWdpdGFsIENlcnRpZmljYXRlIFNpZ25pbmcxKTAn BgNVBAMTIFN0YXJ0Q29tIENlcnRpZmljYXRpb24gQXV0aG9yaXR5MB4XDTA3MTAyNDIxMDE1NVoX DTE3MTAyNDIxMDE1NVowgYwxCzAJBgNVBAYTAklMMRYwFAYDVQQKEw1TdGFydENvbSBMdGQuMSsw KQYDVQQLEyJTZWN1cmUgRGlnaXRhbCBDZXJ0aWZpY2F0ZSBTaWduaW5nMTgwNgYDVQQDEy9TdGFy dENvbSBDbGFzcyAxIFByaW1hcnkgSW50ZXJtZWRpYXRlIENsaWVudCBDQTCCASIwDQYJKoZIhvcN AQEBBQADggEPADCCAQoCggEBAMcJg8zOLdgasSmkLhOrlr6KMoOMpohBllVHrdRvEg/q6r8jR+EK 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