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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E6FA9C2BD09 for ; Fri, 28 Jun 2024 17:46:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:References:Subject:To:From: Cc:Message-Id:Date:Mime-Version:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=h16LrDV5NXFbSOLjLF9pm1oIXS7MFfb54W+kTkz8zPU=; b=aIshEoUhJzp6Gu VvuAf/1BzspnBLBrCNIBE7fuz+6DAirm7vvDljyhkU4JPH1QbF5FRlrEjMtoEdvUlIw7NsIwLYRWV AsOK7XkXc6sG6jSmkrPMzZtu+Xv47e2UrvgGNSYtp6UnpAxIN6qBtDM3+9ZUCoF5T/Sbsy5hICoOr J195RKEP3NlphqPbAZUWcJ8lmuDwreElzHjZPugXbQcYo/ekqwSlxbocopfCoTj+GKIgN+8ofqEgM iomO5CGYXLCJxPy2p0x9qgjLZUE8nsDS+uQzquc6gsj55stBUO+D4Ma+ZDz/RY9t9AD7AM6Tu1Ynj 2iLmZdcEYiwQEH9f6BpA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sNFff-0000000EXN1-0Uu4; Fri, 28 Jun 2024 17:46:03 +0000 Received: from 0001.3ffe.de ([159.69.201.130] helo=mail.3ffe.de) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sNFfc-0000000EXKb-39nr for linux-mtd@lists.infradead.org; Fri, 28 Jun 2024 17:46:02 +0000 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) Mime-Version: 1.0 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: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240628_104600_955774_9F86D7BC X-CRM114-Status: GOOD ( 13.37 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org > 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 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/