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 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.lore.kernel.org (Postfix) with ESMTPS id 56E05C27C76 for ; Sat, 21 Jan 2023 22:33:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) id 0912AC4339B; Sat, 21 Jan 2023 22:33:52 +0000 (UTC) Received: from pandora.armlinux.org.uk (pandora.armlinux.org.uk [78.32.30.218]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.kernel.org (Postfix) with ESMTPS id 51B8AC433D2 for ; Sat, 21 Jan 2023 22:33:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 smtp.kernel.org 51B8AC433D2 Authentication-Results: smtp.kernel.org; dmarc=fail (p=none dis=none) header.from=armlinux.org.uk Authentication-Results: smtp.kernel.org; spf=none smtp.mailfrom=armlinux.org.uk 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 List-Id: 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-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3114bdeb-c8eb-3a3a-0d68-ca3370ce64ec@linaro.org> Sender: Russell King (Oracle) 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!