From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 34207C11D0C for ; Thu, 20 Feb 2020 19:51:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0EBF3206F4 for ; Thu, 20 Feb 2020 19:51:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582228289; bh=BZllZP0S6mHq3M1d/mWw0S2QK7ydm/Mjik/9RGjRhL8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=uU8ecHpV7DFOhVGi9l9VyJkcDhdCulax/gsVh1BZRHQutVsWX7KW2bqTJm0wov4f9 j8PiREM2/bpDl0VjQkoVwc9dMVEcG431FSQzLS9FJ51znyM1h4mAoq2NEqdBYS8WJQ Gxkr6xLipr5+JUPP+jxE9iTu5aHfhQYMgbS0rWDw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728966AbgBTTvZ (ORCPT ); Thu, 20 Feb 2020 14:51:25 -0500 Received: from foss.arm.com ([217.140.110.172]:50438 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728514AbgBTTvZ (ORCPT ); Thu, 20 Feb 2020 14:51:25 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id D90DF30E; Thu, 20 Feb 2020 11:51:24 -0800 (PST) Received: from localhost (unknown [10.37.6.21]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 4EF083F68F; Thu, 20 Feb 2020 11:51:24 -0800 (PST) Date: Thu, 20 Feb 2020 19:51:22 +0000 From: Mark Brown To: Chuanhong Guo Cc: linux-mediatek@lists.infradead.org, linux-spi@vger.kernel.org, linux-mtd@lists.infradead.org, "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Rob Herring , Mark Rutland , Matthias Brugger , linux-arm-kernel@lists.infradead.org, open list Subject: Re: [PATCH 0/2] rewrite mtk-quadspi spi-nor driver with spi-mem Message-ID: <20200220195122.GL3926@sirena.org.uk> References: <20200215065826.739102-1-gch981213@gmail.com> <20200218125557.GD4232@sirena.org.uk> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="kaF1vgn83Aa7CiXN" Content-Disposition: inline In-Reply-To: X-Cookie: You are number 6! Who is number one? User-Agent: Mutt/1.10.1 (2018-07-13) Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org --kaF1vgn83Aa7CiXN Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Thu, Feb 20, 2020 at 07:58:06AM +0800, Chuanhong Guo wrote: > On Tue, Feb 18, 2020 at 8:55 PM Mark Brown wrote: > > This is an ABI break so you shouldn't be doing this, if the existing > > binding works it should continue to work. > The missing spi-max-frequency is the only part preventing old > device tree to work with this driver. > If the goal is to make existing dt binding work, I could patch dt using > of_add_property in v2. I saw similar device tree patching for legacy > bindings in pinctrl-single driver. That's fine I think, so long as old DTs continue to work. --kaF1vgn83Aa7CiXN Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAl5O4zkACgkQJNaLcl1U h9CnhQf/csTFVBvPtYuq5Xz1OdgQcpPuRzKFr7JAXvgpfAUv5qPV/34M4juJxze6 ei2b2s9UlxK2Naa8GFKqAEKOK79jnk5HrI7QkELb2UpQPSJQKubjc8iHzDsQ8rgC V7Qf/2Lv2J/NW4R2XzC0ZXMeSnEMBQepx/pUCQnwXOqReWiy/l2X7pLEJsI4J4pR ba9BzEWWAXYoP4SYj/cVlqhWrBh807h6owmwTlV86VrwRRh2cxosTUZVMx6nRNq6 MBFLZ/vayfFd9LF7BQ5r2isKv+BUrZZ8bd06Gt8vZrrLBoH4YiGhXDLL3CGWvFhk 6M/bBGLDrkTKwSBb6zMaLOsygszigQ== =rZ8a -----END PGP SIGNATURE----- --kaF1vgn83Aa7CiXN--