From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.3ffe.de (0001.3ffe.de [159.69.201.130]) (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 8CADF153561; Fri, 28 Jun 2024 17:45:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.69.201.130 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719596761; cv=none; b=FBpWIx4eS26MMeLl3mMWsYUGz6nL23kuvn0rV4wtVYQFu1fcjkKL5JynB0iRy4Ymt1AoerRak28i7t314OrcY7c/Q/hYtc1ZGUs1UKf453vHRplSxLB9FCk9jmZHvNFJZuq3CC70ylauEO0M+s9FCqWP8NDWrKL/B2IOKWrymsU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719596761; c=relaxed/simple; bh=dS4es04tRYOZvf4zDFdFl25ye6JoEREx0hlNLrRlOP4=; h=Mime-Version:Content-Type:Date:Message-Id:Cc:From:To:Subject: References:In-Reply-To; b=a3/kKdXOeMSHteHgb6mkVFbg4qcsnVBDLKNawk66BgZyJOx6W2MOykcCB7uwzNyvzPFMxzVtx0SEpWEnAHww66BHDYUU3czaMxy8O9jZGZyvpcnCFlYrpKMNabd9XpCcRF88CN4QVsMY30NHVKvPoltTb8KotU46iqrbyAVHO/A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org; spf=pass smtp.mailfrom=walle.cc; arc=none smtp.client-ip=159.69.201.130 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=walle.cc Received: from localhost (unknown [IPv6:2a02:810b:4340:4ee9:4685:ff:fe12:5967]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mail.3ffe.de (Postfix) with ESMTPSA id 7147F5444; Fri, 28 Jun 2024 19:45:50 +0200 (CEST) Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Fri, 28 Jun 2024 19:45:50 +0200 Message-Id: Cc: "Conor Dooley" , "Erez Geva" , , "Tudor Ambarus" , "Pratyush Yadav" , , "Miquel Raynal" , "Richard Weinberger" , "Vignesh Raghavendra" , , "Rob Herring" , "Krzysztof Kozlowski" , "Conor Dooley" From: "Michael Walle" To: "Erez" Subject: Re: [PATCH 3/4] dt-bindings: mtd: macronix,mx25l12833f: add SPI-NOR chip X-Mailer: aerc 0.16.0 References: <20240628140328.279792-1-erezgeva@nwtime.org> <20240628140328.279792-4-erezgeva@nwtime.org> <20240628-refuse-actress-b76985aa020c@spud> In-Reply-To: > What is the kernel policy regarding obsolete flash chips? > Macronix annonce on end of life of mx25l12805d in 2010. Which doesn't mean there are no boards using it. But EOL in 2010 might be a strong argument to remove it. But I don't see the need for it, yet. > > Also please have a look at > > https://docs.kernel.org/driver-api/mtd/spi-nor.html > > The new mx25l12833f supports SFDP, the obsolete mx25l12805d does not. > I did manage to read the SFDP, though I do not have a copy of it (I do > not have the hardware any more). So how would you test newer versions of this series? > To my best knowledge SFDP table do not contain information on OTP, That's true, but we need it to detect flashes during runtime in the future. Imagine sometime later, there's a third flash with this exact ID, then we need to have the SFDP to figure out if there are any differences between yours and the new one. -michael