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 X-Spam-Level: X-Spam-Status: No, score=-12.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PULL_REQUEST,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2137AC43603 for ; Sat, 14 Dec 2019 13:00:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E7A3D2465B for ; Sat, 14 Dec 2019 13:00:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=armlinux.org.uk header.i=@armlinux.org.uk header.b="NYBnGKnB" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726741AbfLNNAB (ORCPT ); Sat, 14 Dec 2019 08:00:01 -0500 Received: from pandora.armlinux.org.uk ([78.32.30.218]:34498 "EHLO pandora.armlinux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725884AbfLNNAA (ORCPT ); Sat, 14 Dec 2019 08:00:00 -0500 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=cVfsByPBGAH0nlXQRgx8tkvnwPRM93zqT8emFAC0MMo=; b=NYBnGKnByJHlzENS5UPOeXPvF lDm53oKLDryplzcg2wtiqsmjk3vVDVik46mpm2X542ZB8jgKcPYXLegNwiMKoe4d/3zB/HFIpweM3 W9zQNX2o0ic0jH6Xf1nD2ANFnYiJlYjPoErAzdJGnDjLlJNXwP6FaMq4iNpGOlslXBp3lY4Q1YfNZ w7c61lybarYqsCdd00nAaqbA6LMJjEqcOt3OUo2xgdSp0A6sZSEZU0regJQgOud95o2biPA9vHEu9 6z87usN65hGtdKwyFimNG1lclpP+feXTewWQLO1uyc6CFoN3NYiXmGfYCsCkUKChTdYYOtCTKUm45 Rj/NHc5jw==; Received: from shell.armlinux.org.uk ([2001:4d48:ad52:3201:5054:ff:fe00:4ec]:41234) by pandora.armlinux.org.uk with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ig71T-0002v6-Ew; Sat, 14 Dec 2019 12:59:51 +0000 Received: from linux by shell.armlinux.org.uk with local (Exim 4.92) (envelope-from ) id 1ig71P-0000SH-FH; Sat, 14 Dec 2019 12:59:47 +0000 Date: Sat, 14 Dec 2019 12:59:47 +0000 From: Russell King - ARM Linux admin To: "H. Nikolaus Schaller" Cc: Stefan Wahren , Florian Fainelli , Tony Lindgren , Linux Kernel Mailing List , bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org, Discussions about the Letux Kernel , Linux-OMAP , arm-soc Subject: Re: BUG - was: [GIT PULL 2/3] bcm2835-soc-next-2019-10-15 Message-ID: <20191214125947.GD1337@shell.armlinux.org.uk> References: <1571159725-5090-1-git-send-email-wahrenst@gmx.net> <1571159725-5090-2-git-send-email-wahrenst@gmx.net> <12244E4E-A1A0-4EE9-ACD3-EA165D9A2C79@goldelico.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <12244E4E-A1A0-4EE9-ACD3-EA165D9A2C79@goldelico.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Dec 14, 2019 at 11:54:19AM +0100, H. Nikolaus Schaller wrote: > Hi Stefan, > > > Am 15.10.2019 um 19:15 schrieb Stefan Wahren : > > > > Hi Florian, > > > > The following changes since commit 54ecb8f7028c5eb3d740bb82b0f1d90f2df63c5c: > > > > Linux 5.4-rc1 (2019-09-30 10:35:40 -0700) > > > > are available in the git repository at: > > > > git://github.com/anholt/linux tags/bcm2835-soc-next-2019-10-15 > > > > for you to fetch changes up to 781fa0a954240c8487683ddf837fb2c4ede8e7ca: > > > > ARM: bcm: Add support for BCM2711 SoC (2019-10-10 19:21:03 +0200) > > this patch has finally arrived in v5.5-rc1 but it seems to break > multiplatform build. > > We run a distribution kernel that supports OMAP3/4/5, i.MX6 and RasPi 3B+ > but since rebasing to v5.5-rc1 the kernel hangs after "Starting Kernel ...". > On all ARM devices (incl. RasPi 3B+). > > Playing with our defconfig did show that deconfiguring CONFIG_ARCH_BCM2835 > makes the kernel work again. > > After further analysis it turns out that reverting this patch also > makes the boards work again. > > I am not exactly sure what the reason is, but it may have something to > do with the new auto-selection of CONFIG_ZONE_DMA which is not automatically > selected by OMAP and i.MX6. > > To reproduce on some OMAP device (i.MX6 should be similar) > > 1st test: > > git checkout v5.5-rc1 > make omap2plus_defconfig > > => boots OMAP device > > 2nd test: > > ( echo CONFIG_ARCH_BCM2835=y; echo CONFIG_ARCH_BCM=y ) >>arch/arm/configs/omap2plus_defconfig > make omap2plus_defconfig > > => fails to boot OMAP device > > 3rd test: > > git revert 781fa0a954240c8487683ddf837fb2c4ede8e7ca > make omap2plus_defconfig > > => boots OMAP device > > BTW: the RasPi 3B+ runs equally well without this patch. So what is it > good for? > > So please check and fix this patch. Enabling ZONE_DMA shouldn't cause this problem - but as it does, please enable memblock debugging and early console, and please send any boot messages you can get from the system when it fails to boot. Also having a successful boot log may be useful. Thanks. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up According to speedtest.net: 11.9Mbps down 500kbps up