From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BE8ED3F9FC; Mon, 24 Jun 2024 08:55:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719219339; cv=none; b=N89rr/nxHE1pJP/sb7h+Q3iLbQmctq5ZblNMv1YAqaKUDmHA4ofxgDdRH68VTr/ThjJUOOQoR0qm+rRtWC3bWsqjsKnq6iV1vBN8fYTdpyGG5FeSViBuxfsSJ83/ncKfQ0N77P6Jp9+X3sh6l5SGoefj/TBgCuB57wjsmLAhwBk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719219339; c=relaxed/simple; bh=GZdM7RgAiulGjt8VwbxLG+6rinyzS20ZKJ2DX8G/7DA=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=XrvWoLaLUTexHHINhpRkE0zzQFAUKKOw908hLJtYZb1rvZGYZQ/eWW3PadCgWK+MmjkYD0UEjxQ0/g/EF+gsOb/HZAeg2rW+Ep3mIgDSnoJPstcuCG8giQXBpvU4BTG/dBSV3EjjHj3Seor7ae4VvWFbcrXIwIkDsmILgt+hMXs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Trj3GrNK; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Trj3GrNK" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 05AB2C32782; Mon, 24 Jun 2024 08:55:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1719219339; bh=GZdM7RgAiulGjt8VwbxLG+6rinyzS20ZKJ2DX8G/7DA=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=Trj3GrNKUfHKTAjwPPQW79NqukdD4xt/4ta/5b0rD6NUqDz+ZiT898NL5vostu/ug yZuBQsoaSZI8FNDvmJCMLmCpGwlCng/ZzollweZwlCP0OpuTT8kk0k177VZxOxRwke rHC4HnCDBdT140Eplr/JH654xdjrTX5h/m5gt9oB6JgsEkZ5IxvBQcharKmho45Rmf 2GBzqIPmFOsIE2T88V/3w54m6GBDJcsd7gAWw9TmZSRbQ+RQo7KAkkrUR76Vr3N12B J2Q1SulPaP/GB4xN+6iutsEV0G38xwq6LxfJb8Pyulxe2Zj+NSJNLoGL1yKJ7mYI3X aSLB2Kfeh54Kw== Message-ID: <42b32958-89ee-43b6-96d1-f3e18c7d8955@kernel.org> Date: Mon, 24 Jun 2024 10:55:31 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCHv5 7/9] ASoC: dt-bindings: imx-audio-spdif: remove binding To: Elinor Montmasson Cc: Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shawn Guo , Sascha Hauer , Fabio Estevam , Russell King , Catalin Marinas , Will Deacon , Jaroslav Kysela , Takashi Iwai , shengjiu wang , Xiubo Lee , Nicolin Chen , Pengutronix Kernel Team , linux-sound , devicetree , imx , linux-arm-kernel , linux-kernel , alsa-devel , linuxppc-dev , Philip-Dylan Gleonec References: <20240620132511.4291-1-elinor.montmasson@savoirfairelinux.com> <20240620132511.4291-8-elinor.montmasson@savoirfairelinux.com> <17a0efe3-72fa-4d13-b3b0-90e6640308f3@kernel.org> <1566099232.1714447.1719219107779.JavaMail.zimbra@savoirfairelinux.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 24/06/2024 10:51, Elinor Montmasson wrote: > From: "Krzysztof Kozlowski" > Sent: Sunday, 23 June, 2024 13:09:33 >> On 20/06/2024 15:25, Elinor Montmasson wrote: >>> imx-audio-spdif was merged into the fsl-asoc-card driver, and therefore >>> removed. >> >> So what happens with all existing users (e.g. DTS)? They become >> invalid/not supported? > > > Next commits, 8/9 and 9/9, update all DTS files that currently use > the "fsl,imx-audio-spdif" compatible. You mean in-tree. I mean all users, in- and out-of-tree. Other projects. > From the users point of view, currently configured spdif audio cards > will behave just the same. > > >> After quick look, I do not see backwards compatibility in the driver and >> above commit msg tells me nothing about ABI break. > > > For the next version I will state in this commit message the upcoming modifications to DTS > and compatibility, why it will be done, and that support for existing DTS is not dropped. > > Previous `imx-spdif` driver used the dummy codec instead of > using declared spdif codecs. It was discussed in previous version of this contribution > that using the dummy codec isn't good practice. So one to one backward compatibility > isn't really possible. Heh, that's not good. This is improvement, cleanup. While it is important and useful, it should also not break existing users. Best regards, Krzysztof