From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753645AbcILQ0b (ORCPT ); Mon, 12 Sep 2016 12:26:31 -0400 Received: from smtpoutz298.laposte.net ([178.22.154.198]:36722 "EHLO smtp.laposte.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752019AbcILQ00 (ORCPT ); Mon, 12 Sep 2016 12:26:26 -0400 Subject: Re: ARM, SoC: About the use DT-defined properties by 3rd-party drivers To: Mark Rutland References: <57BDAF2E.10502@laposte.net> <57D69FB1.2020801@laposte.net> <20160912123809.GB13741@leverpostej> <57D6AA54.6000208@laposte.net> <20160912135549.GA14165@leverpostej> <57D6D2A9.3010006@laposte.net> Cc: devicetree , Mason , Timur Tabi , Linux ARM , LKML From: Sebastian Frias Message-ID: <57D6D72F.3080605@laposte.net> Date: Mon, 12 Sep 2016 18:26:23 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.8.0 MIME-Version: 1.0 In-Reply-To: <57D6D2A9.3010006@laposte.net> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-VR-SrcIP: 78.31.43.6 X-VR-FullState: 0 X-VR-Score: -100 X-VR-Cause-1: gggruggvucftvghtrhhoucdtuddrfeeluddrieekgddutddvucdltddurdefledtrddttddmucetufdo X-VR-Cause-2: teggodetrfdotffvucfrrhhofhhilhgvmecunfetrffquffvgfenuceurghilhhouhhtmecuhedttden X-VR-Cause-3: ucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhepuffvfhfhkffffgggjggtgfesthej X-VR-Cause-4: rgdttdefheenucfhrhhomhepufgvsggrshhtihgrnhcuhfhrihgrshcuoehsfhekgeeslhgrphhoshht X-VR-Cause-5: vgdrnhgvtheqnecukfhppeejkedrfedurdegfedrieenucfrrghrrghmpehmohguvgepshhmthhpohhu X-VR-Cause-6: thdphhgvlhhopegludejvddrvdejrddtrddvudegngdpihhnvghtpeejkedrfedurdegfedriedpmhgr X-VR-Cause-7: ihhlfhhrohhmpehsfhekgeeslhgrphhoshhtvgdrnhgvthdprhgtphhtthhopehmrghrkhdrrhhuthhl X-VR-Cause-8: rghnugesrghrmhdrtghomh X-VR-AvState: No X-VR-State: 0 X-VR-State: 0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 09/12/2016 06:07 PM, Sebastian Frias wrote: > Hi Mark, > > On 09/12/2016 04:01 PM, Mark Rutland wrote: >>> 3rd parties could choose to write a driver (as opposed to use say, a user-mode >>> library) if it fits their programming model better, if they think they would >>> have better performance, or other reasons. >> >> A vendor can always choose to "add value" in this manner. The general >> expectation of *some* driver being upstreamed remains. > > Yes, that's the idea. Just to clarify, what I meant is that, using the DT as the authoritative source of HW description is a way to "add value" to everybody, because both, 3rd-parties and the open-source community get the same information. This creates the conditions for drivers to exist, with the expectation that eventually said drivers would be upstreamed.