From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754234Ab2GGD3R (ORCPT ); Fri, 6 Jul 2012 23:29:17 -0400 Received: from cavan.codon.org.uk ([93.93.128.6]:49111 "EHLO cavan.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751585Ab2GGD3N (ORCPT ); Fri, 6 Jul 2012 23:29:13 -0400 Date: Sat, 7 Jul 2012 04:29:08 +0100 From: Matthew Garrett To: Catalin Marinas Cc: linux-kernel@vger.kernel.org, Arnd Bergmann Subject: Re: [PATCH 00/36] AArch64 Linux kernel port Message-ID: <20120707032907.GA15120@srcf.ucam.org> References: <1341608777-12982-1-git-send-email-catalin.marinas@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1341608777-12982-1-git-send-email-catalin.marinas@arm.com> User-Agent: Mutt/1.5.20 (2009-06-14) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: mjg59@cavan.codon.org.uk X-SA-Exim-Scanned: No (on cavan.codon.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jul 06, 2012 at 10:05:41PM +0100, Catalin Marinas wrote: > There is no hardware platform available at this point. From a kernel > perspective, the aim is to minimise (or even completely remove) the > platform code from the architecture specific directory. FDT is currently > mandated and there are ongoing discussions for ACPI support. While mandating FDT is a massive advance over arm32, if there's a chance that ACPI-based AArch64 platforms will ship in a similar timeframe to FDT then I think we should ensure that ACPI and FDT are merged beforehand - the alternative is that people are going to end up writing the same hardware driver twice for different firmware implementations. I don't think anyone benefits from introducing a platform that has multiple device representations[1] [1] Yeah x86 has the same problem with PNP and ACPI and PCI and given how much pain that's caused me I wish someone had complained at the time -- Matthew Garrett | mjg59@srcf.ucam.org