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 18C25C27C76 for ; Sat, 21 Jan 2023 22:37:16 +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:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=gqZii36A1Mv+KA3u/DNVM/8ZF6eRri4Ean8VAvZOcl4=; b=0LszCWKGhWz9xx hV8UmF80f3R5LYc6yFfJIMNaSnOmcwjK4gtBdVX/Fkhyvy5T4ZTlEXjfwAdQjr4MVqD7JCQ5amQ2D mG6PvEJ29QcpUy/HAcIcFCy5JEeuyHFPyELSyutjNS+Wy64pB9BgVdzYgcOrkyaLhCSI8rnBL6IZ8 KDdPLegZHWdbKSgz2dHCiYxwVAjglv4xejDrlBkeyGxuiY6U6Oz/c3kRcF5wxMuAu5fydIs5oVLAk ChZrPCg8U2nFwR3lhqycI2fhqfYDch4pmmO6R928wCTOLn16CAp4o+uR6cxDx3nX8Ki29bHWeihz5 dT2XBOTboP6lS1ndGVBw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pJMSs-00EcGB-MV; Sat, 21 Jan 2023 22:35:58 +0000 Received: from pandora.armlinux.org.uk ([2001:4d48:ad52:32c8:5054:ff:fe00:142]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pJMSp-00EcBQ-Mq for linux-arm-kernel@lists.infradead.org; Sat, 21 Jan 2023 22:35:57 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2019; h=Sender:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=qSIbpGBcZLqkCpexATgZFICQef87VnQGSmdts/43mig=; b=ctyqb7SFKq7PzL80nZrlEAu+C/ ho+MZHR9P3yZsJAGT4aqF8EaygxfGuMsT0QTZBM0M+XjZ/9/TcBBULVC3EtGTGfSbLu0Oi+lPPZ+D aG1bReWRdfO7uyjDZ82yhlymFnGZiCed8K5qVpdQldmE0JWvn/hewHJGnYC/scXfSdhk5tfbeBPgU kNgpgoS9+3JnyfzkbTvJqxLCvwoyrXf75ccQYhu7udywcKvK35VlyPI8JOA6hx35iC2s1NlaNOBcb z7ZlAB8bmK8oevwZOIDS0KwngcfkPAcFj2la7dEAYqHQir82ib3S+uyManrnCZSzik8o9xNYpHsgp uMNS6qkg==; Received: from shell.armlinux.org.uk ([fd8f:7570:feb6:1:5054:ff:fe00:4ec]:36250) by pandora.armlinux.org.uk with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1pJMQc-0001Td-3v; Sat, 21 Jan 2023 22:33:37 +0000 Received: from linux by shell.armlinux.org.uk with local (Exim 4.94.2) (envelope-from ) id 1pJMQW-0002lj-EM; Sat, 21 Jan 2023 22:33:32 +0000 Date: Sat, 21 Jan 2023 22:33:32 +0000 From: "Russell King (Oracle)" To: Krzysztof Kozlowski Cc: Alexander Stein , Rob Herring , Krzysztof Kozlowski , Arnd Bergmann , Olof Johansson , Shawn Guo , Li Yang , Marek Vasut , Marcel Ziswiler , soc@kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH 8/9] ARM: multi_v7_defconfig: Add options to support TQMLS102xA series Message-ID: References: <20230119144236.3541751-1-alexander.stein@ew.tq-group.com> <20230119144236.3541751-9-alexander.stein@ew.tq-group.com> <2168770.1BCLMh4Saa@steina-w> <3114bdeb-c8eb-3a3a-0d68-ca3370ce64ec@linaro.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <3114bdeb-c8eb-3a3a-0d68-ca3370ce64ec@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230121_143555_781888_C56055EF X-CRM114-Status: GOOD ( 14.85 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Sat, Jan 21, 2023 at 09:27:52PM +0100, Krzysztof Kozlowski wrote: > On 20/01/2023 15:57, Russell King (Oracle) wrote: > > Clearly, "defconfig=y is only for critical stuff" is rather false in > > practice, and I suspect is little more than a desire rather than a > > rule. I suspect it's more "defconfig=y is for stuff that makes most > > platforms successfully boot without an initramfs". > > Yes, that's true, although there was already pushback against this. > Having an initramfs is not a big deal and nowadays I think all new ARMv8 > platforms use it. > > Anyway this talk here is about RTC which is not needed at all as built in. Provided NFS doesn't repeat XIDs at boot (which it used to when the kernel had no idea what the TOD is.) I believe the NFS standard allows NFS servers to repeat their response to a repeated XID even if the request is different... which used to cause chaos for me with a machine that has no RTC and boots using NFS root. So just be aware that if the NFS XID is still dependent on TOD, then not having RTCs loaded can cause chaos. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last! _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel