Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752266AbaLCXHy (ORCPT ); Wed, 3 Dec 2014 18:07:54 -0500 Received: from mail-pd0-f169.google.com ([209.85.192.169]:61281 "EHLO mail-pd0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752142AbaLCXHw (ORCPT ); Wed, 3 Dec 2014 18:07:52 -0500 Message-ID: <547F97C5.7020202@gmail.com> Date: Wed, 03 Dec 2014 15:07:49 -0800 From: Frank Rowand Reply-To: frowand.list@gmail.com User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20130801 Thunderbird/17.0.8 MIME-Version: 1.0 To: Grant Likely CC: Leif Lindholm , "devicetree@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , Linux Kernel Mailing List , Mark Rutland , Andrew Lunn , "s.hauer@pengutronix.de" , Rob Herring , Ian Campbell , Jean-Christophe PLAGNIOL-VILLARD Subject: Re: [PATCH v3 1/3] devicetree: of: Add bindings for chosen node, stdout-path References: <1417110967-16284-1-git-send-email-leif.lindholm@linaro.org> <1417110967-16284-2-git-send-email-leif.lindholm@linaro.org> <547E7455.6090009@gmail.com> <547F6881.20400@gmail.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/3/2014 1:45 PM, Grant Likely wrote: > On Wed, Dec 3, 2014 at 7:46 PM, Frank Rowand wrote: >> On 12/3/2014 7:12 AM, Grant Likely wrote: >>> On Wed, Dec 3, 2014 at 2:24 AM, Frank Rowand wrote: >>>> On 11/27/2014 9:56 AM, Leif Lindholm wrote: >>>>> Add a global binding for the chosen node. >>>>> Include a description of the stdout-path, and an explicit statement on >>>>> its extra options in the context of a UART console. >>>>> >>>>> Opening description stolen from www.devicetree.org, and part of the >>>>> remaining text provided by Mark Rutland. >>>>> >>>>> Signed-off-by: Leif Lindholm >>>>> --- >>>>> Documentation/devicetree/bindings/chosen.txt | 42 ++++++++++++++++++++++++++ >>>>> 1 file changed, 42 insertions(+) >>>>> create mode 100644 Documentation/devicetree/bindings/chosen.txt >>>>> >>>>> diff --git a/Documentation/devicetree/bindings/chosen.txt b/Documentation/devicetree/bindings/chosen.txt >>>>> new file mode 100644 >>>>> index 0000000..9cd74e9 >>>>> --- /dev/null >>>>> +++ b/Documentation/devicetree/bindings/chosen.txt >>>>> @@ -0,0 +1,42 @@ >>>>> +The chosen node >>>>> +--------------- >>>>> + >>>>> +The chosen node does not represent a real device, but serves as a place >>>>> +for passing data between firmware and the operating system, like boot >>>>> +arguments. Data in the chosen node does not represent the hardware. >>>>> + >>>>> + >>>>> +stdout-path property >>>> >>>> The code in patch 3/3 adds the extra options feature to the properties: >>>> >>>> stdout-path >>>> linux,stdout-path >>>> stdout [if (IS_ENABLED(CONFIG_PPC) ... ] >>> >>> I don't understand what you mean here. Are you suggesting a change to >>> this patch? Is there something deficient in it? >> >> Assuming that the code change in patch 3 is as desired, then the chosen.txt >> documentation applies to all three properties, not just stdout-path. So >> yes, a change is suggested for the documentation. > > how about if this is added: > > Implementation note: Linux will look for the property "linux,stdout-path" or > on PowerPC "stdout" if "stdout-path" is not found. However, the > "linux,stdout-path" and "stdout" properties are deprecated. New platforms > should only use the "stdout-path" property. > > g. > Yep, perfect. -Frank -- 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/