From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752470AbbBSSJg (ORCPT ); Thu, 19 Feb 2015 13:09:36 -0500 Received: from ns.iliad.fr ([212.27.33.1]:58620 "EHLO ns.iliad.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751595AbbBSSJe (ORCPT ); Thu, 19 Feb 2015 13:09:34 -0500 X-Greylist: delayed 453 seconds by postgrey-1.27 at vger.kernel.org; Thu, 19 Feb 2015 13:09:34 EST Message-ID: <1424368919.13604.9.camel@sakura.staff.proxad.net> Subject: Re: [PATCH 2/4] of: DT quirks infrastructure From: Maxime Bizon Reply-To: mbizon@freebox.fr To: Pantelis Antoniou Cc: frowand.list@gmail.com, Mark Rutland , "devicetree@vger.kernel.org" , Tony Lindgren , Koen Kooi , Nicolas Ferre , "linux-kernel@vger.kernel.org" , Grant Likely , Ludovic Desroches , Guenter Roeck , Matt Porter , "linux-arm-kernel@lists.infradead.org" Date: Thu, 19 Feb 2015 19:01:59 +0100 In-Reply-To: <53F2F94C-0C43-4A54-B8CD-EEC454A0AC19@konsulko.com> References: <1424271576-1952-1-git-send-email-pantelis.antoniou@konsulko.com> <1424271576-1952-3-git-send-email-pantelis.antoniou@konsulko.com> <20150218154106.GC29429@leverpostej> <20150218173115.GG29429@leverpostej> <76BD1B22-BAED-4205-9B34-186907CE0217@konsulko.com> <54E613E7.2020405@gmail.com> <670D0881-DBF0-45E8-A502-A6DB2B77A750@konsulko.com> <54E61DD2.3060002@gmail.com> <53F2F94C-0C43-4A54-B8CD-EEC454A0AC19@konsulko.com> Organization: Freebox Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.10.4-0ubuntu2 Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2015-02-19 at 19:38 +0200, Pantelis Antoniou wrote: > Having to boot and tweak the bootloader settings to select the correct > dtb (even if it’s present on the flash medium) takes time and is > error-prone. Dedicate a set of GPIO for board/PCB revision detection (it only costs a few resistors connected to VCC or GND), then use that information to choose the correct DTB. -- Maxime From mboxrd@z Thu Jan 1 00:00:00 1970 From: Maxime Bizon Subject: Re: [PATCH 2/4] of: DT quirks infrastructure Date: Thu, 19 Feb 2015 19:01:59 +0100 Message-ID: <1424368919.13604.9.camel@sakura.staff.proxad.net> References: <1424271576-1952-1-git-send-email-pantelis.antoniou@konsulko.com> <1424271576-1952-3-git-send-email-pantelis.antoniou@konsulko.com> <20150218154106.GC29429@leverpostej> <20150218173115.GG29429@leverpostej> <76BD1B22-BAED-4205-9B34-186907CE0217@konsulko.com> <54E613E7.2020405@gmail.com> <670D0881-DBF0-45E8-A502-A6DB2B77A750@konsulko.com> <54E61DD2.3060002@gmail.com> <53F2F94C-0C43-4A54-B8CD-EEC454A0AC19@konsulko.com> Reply-To: mbizon@freebox.fr Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <53F2F94C-0C43-4A54-B8CD-EEC454A0AC19@konsulko.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Pantelis Antoniou Cc: Mark Rutland , "devicetree@vger.kernel.org" , Tony Lindgren , Koen Kooi , Nicolas Ferre , "linux-kernel@vger.kernel.org" , Grant Likely , Ludovic Desroches , "linux-arm-kernel@lists.infradead.org" , Matt Porter , frowand.list@gmail.com, Guenter Roeck List-Id: devicetree@vger.kernel.org Ck9uIFRodSwgMjAxNS0wMi0xOSBhdCAxOTozOCArMDIwMCwgUGFudGVsaXMgQW50b25pb3Ugd3Jv dGU6Cgo+IEhhdmluZyB0byBib290IGFuZCB0d2VhayB0aGUgYm9vdGxvYWRlciBzZXR0aW5ncyB0 byBzZWxlY3QgdGhlIGNvcnJlY3QKPiBkdGIgKGV2ZW4gaWYgaXTigJlzIHByZXNlbnQgb24gdGhl IGZsYXNoIG1lZGl1bSkgdGFrZXMgdGltZSBhbmQgaXMKPiBlcnJvci1wcm9uZS4KCkRlZGljYXRl IGEgc2V0IG9mIEdQSU8gZm9yIGJvYXJkL1BDQiByZXZpc2lvbiBkZXRlY3Rpb24gKGl0IG9ubHkg Y29zdHMgYQpmZXcgcmVzaXN0b3JzIGNvbm5lY3RlZCB0byBWQ0Mgb3IgR05EKSwgdGhlbiB1c2Ug dGhhdCBpbmZvcm1hdGlvbiB0bwpjaG9vc2UgdGhlIGNvcnJlY3QgRFRCLgoKLS0gCk1heGltZQoK CgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpsaW51eC1h cm0ta2VybmVsIG1haWxpbmcgbGlzdApsaW51eC1hcm0ta2VybmVsQGxpc3RzLmluZnJhZGVhZC5v cmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1hcm0t a2VybmVsCg== From mboxrd@z Thu Jan 1 00:00:00 1970 From: mbizon@freebox.fr (Maxime Bizon) Date: Thu, 19 Feb 2015 19:01:59 +0100 Subject: [PATCH 2/4] of: DT quirks infrastructure In-Reply-To: <53F2F94C-0C43-4A54-B8CD-EEC454A0AC19@konsulko.com> References: <1424271576-1952-1-git-send-email-pantelis.antoniou@konsulko.com> <1424271576-1952-3-git-send-email-pantelis.antoniou@konsulko.com> <20150218154106.GC29429@leverpostej> <20150218173115.GG29429@leverpostej> <76BD1B22-BAED-4205-9B34-186907CE0217@konsulko.com> <54E613E7.2020405@gmail.com> <670D0881-DBF0-45E8-A502-A6DB2B77A750@konsulko.com> <54E61DD2.3060002@gmail.com> <53F2F94C-0C43-4A54-B8CD-EEC454A0AC19@konsulko.com> Message-ID: <1424368919.13604.9.camel@sakura.staff.proxad.net> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Thu, 2015-02-19 at 19:38 +0200, Pantelis Antoniou wrote: > Having to boot and tweak the bootloader settings to select the correct > dtb (even if it?s present on the flash medium) takes time and is > error-prone. Dedicate a set of GPIO for board/PCB revision detection (it only costs a few resistors connected to VCC or GND), then use that information to choose the correct DTB. -- Maxime