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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 76EF5C433EF for ; Wed, 16 Mar 2022 17:43:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237455AbiCPRo2 (ORCPT ); Wed, 16 Mar 2022 13:44:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58738 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236541AbiCPRo1 (ORCPT ); Wed, 16 Mar 2022 13:44:27 -0400 Received: from mail-pl1-x636.google.com (mail-pl1-x636.google.com [IPv6:2607:f8b0:4864:20::636]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 24B8813F2D; Wed, 16 Mar 2022 10:43:13 -0700 (PDT) Received: by mail-pl1-x636.google.com with SMTP id w4so2369787ply.13; Wed, 16 Mar 2022 10:43:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=ffIAIQFc2cAlKifnXo9kBri/p18XrYzz9Wn/ebkpe2Y=; b=oRaai7D6WoTdn09DUthJ/tCt3ZRRRmTzMA9X8s8oBmeJAg4xuhj7WSnLzfEEhEgo2q DPQt68VNB+OVBXGlLhiEMHEqhRgGOQ6FznYvsQO3pSP3mKq2fQbVYApDCLtvu+m6TXub OQ3gOjdeLx4Ju83hgwuQrZ1VX6sKiMYMOix6Gt9suK2mEtycc+nIg765JAyisOEJLIl9 cFPvtIgB5mIdKc8h9FYLeJ9OXBGUuLxmMkRZX6oz/Os2hvWArKKuLNgOXg9KDXlOm1Hv j5WeXFkxP3L83WDfWIsCvjRR3+oZ/byvxYBspjIXAtF0fidfuwVcLlwf32PaEEogdmtY hHDw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=ffIAIQFc2cAlKifnXo9kBri/p18XrYzz9Wn/ebkpe2Y=; b=bUTlq2qWgter4K7m7YKPb++WjFUnlIELAn8BN79zxOzWXj3X1HJOUT6HwlAJrKGYE3 vKtoHu3Fg8hma91GCn199qwUSngrrvk502JahajWDjsNXELY+VHzySrupmRDW4sNEFun sqb6WaJLmukLQvdSHEiD643iOUN61ehptgWiBfAh6B+gyQ+jSc5WGBFOP2iIjYACmrSC ANyScmCHxeLzrZoLf1705+1RkpqYjvbymMHIoKx7RLFjg9qXRt7CoQpk57E2H+AfNXtB VVYdTOInMtB3EPeDUto5OTmfV79ZeXg92cRs4hAJ+ld6rerNTHICzaxmiMJsJo4zr1IB XIyw== X-Gm-Message-State: AOAM532M3lKDXlCZDyDFFJT6o2BCsLqFeBbERg9pcWgfK3JcaKPbb06u 5VSMt08iCXtt8UC0ObhhNAU= X-Google-Smtp-Source: ABdhPJyQXcnhJGX4GLSkway+M5F+Uzq+ULmdDX4acrkkN+dZx1VsMPBvO0zpceH6za8lhtXP6hIjJA== X-Received: by 2002:a17:902:a40d:b0:153:7213:1584 with SMTP id p13-20020a170902a40d00b0015372131584mr778008plq.56.1647452592648; Wed, 16 Mar 2022 10:43:12 -0700 (PDT) Received: from 9a2d8922b8f1 ([122.161.51.18]) by smtp.gmail.com with ESMTPSA id n18-20020a628f12000000b004f743724c75sm3777905pfd.53.2022.03.16.10.43.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Mar 2022 10:43:12 -0700 (PDT) Date: Wed, 16 Mar 2022 23:13:06 +0530 From: Kuldeep Singh To: Krzysztof Kozlowski Cc: Marc Zyngier , Mark Rutland , Daniel Lezcano , Thomas Gleixner , Rob Herring , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org Subject: Re: [PATCH 2/3] dt-bindings: timer: Document arm,cortex-a7-timer for arch timer Message-ID: <20220316174306.GC21737@9a2d8922b8f1> References: <20220316095433.20225-1-singh.kuldeep87k@gmail.com> <20220316095433.20225-3-singh.kuldeep87k@gmail.com> <662981fe-7cf4-b0e6-2d43-3f33a53a6abd@canonical.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <662981fe-7cf4-b0e6-2d43-3f33a53a6abd@canonical.com> Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On Wed, Mar 16, 2022 at 05:28:49PM +0100, Krzysztof Kozlowski wrote: > On 16/03/2022 10:54, Kuldeep Singh wrote: > > Renesas RZ/N1D platform uses compatible "arm,cortex-a7-timer" in > > conjugation with "arm,armv7-timer". Since, initial entry is not > > documented, it start raising dtbs_check warnings. > > > > ['arm,cortex-a7-timer', 'arm,armv7-timer'] is too long > > 'arm,cortex-a7-timer' is not one of ['arm,armv7-timer', 'arm,armv8-timer'] > > 'arm,cortex-a7-timer' is not one of ['arm,cortex-a15-timer'] > > > > In general, removing an existing entry is mostly devastating considering > > backward compatibility. Therefore, document it. > > How removing undocumented and unused compatible is devastating for > backwards compatibility? I don't see it. > > DTS is rather wrong, not bindings. Otherwise please explain it more, why > DTS is correct. Please see my comment on 3/3 patch. - Kuldeep