Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933553AbbKRR4G (ORCPT ); Wed, 18 Nov 2015 12:56:06 -0500 Received: from smtpfb2-g21.free.fr ([212.27.42.10]:41819 "EHLO smtpfb2-g21.free.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933511AbbKRR4A (ORCPT ); Wed, 18 Nov 2015 12:56:00 -0500 Subject: Re: Re: [Qemu-devel] [PATCH v4 4/4] devicetree: update documentation for fw_cfg ARM bindings To: Rob Herring , Paolo Bonzini References: <1447470235-13643-1-git-send-email-somlo@cmu.edu> <1447470235-13643-5-git-send-email-somlo@cmu.edu> <20151115020754.GA21323@rob-hp-laptop> <564995FA.40308@redhat.com> Cc: Mark Rutland , Peter Maydell , mst@redhat.com, stefanha@gmail.com, QEMU Developers , Eric Anholt , kraxel@redhat.com, "linux-api@vger.kernel.org" , Andy Gross , Pawel Moll , kernelnewbies@kernelnewbies.org, =?UTF-8?B?UmFmYcWCIE1pxYJlY2tp?= , Russell King , Laszlo Ersek , "devicetree@vger.kernel.org" , Arnd Bergmann , Ian Campbell , jordan.l.justen@intel.com, "Gabriel L. Somlo" , Kumar Gala , Leif Lindholm , "matt.fleming@intel.com" , Ard Biesheuvel , Greg Kroah-Hartman , "linux-kernel@vger.kernel.org" , Andy Lutomirski , Hanjun Guo , Sudeep Holla From: =?UTF-8?Q?Fran=c3=a7ois_Revol?= X-Enigmail-Draft-Status: N1110 Message-ID: <564C7758.6010103@free.fr> Date: Wed, 18 Nov 2015 14:04:24 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Icedove/38.3.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1814 Lines: 45 On 17/11/2015 23:14, Rob Herring wrote: > On Mon, Nov 16, 2015 at 2:38 AM, Paolo Bonzini wrote: >> >> >> On 15/11/2015 03:07, Rob Herring wrote: >>> We generally don't want DT docs to depend on other kernel documentation. >> >> DT docs do not contain a copy of the data sheets, either. There is no >> reason to say how to use the device (and even then, only doing so >> partially) in the DT docs. > > The difference is datasheets apply to all OS's, kernel documentation > does not. In theory at least this could be used for other OS's, right? Would be nice indeed, as it's part of their intended purpose. For now we have to shoehorn things into linux-only stuff (like initrd) because well, nobody cares enough about NetBSD to compile U-Boot with its internal API, so let alone adding custom Haiku code. And of course, for things linux doesn't care about (like framebuffer description) then we're stuck trying to guess where it's at and writing drivers for our bootloader. So if at least people were considering they aren't the only users of this, that'd make life better for everyone. > Perhaps QEMU is the right place to thoroughly describe this and DT and > sysfs docs can refer to it. The brilliant idea of FDT was that we could have a canonical source and blob for it where people could send patches, but of course Linux and BSD freaks disagreed, so you now find Linux-flavoured DTs for rPi and other things, as well as BSD versions. Please, at least get the binding documentation for this unique and usable for everyone! Fran?ois. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/