From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753876AbdLMTqo (ORCPT ); Wed, 13 Dec 2017 14:46:44 -0500 Received: from mail-lf0-f66.google.com ([209.85.215.66]:45717 "EHLO mail-lf0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753800AbdLMTqm (ORCPT ); Wed, 13 Dec 2017 14:46:42 -0500 X-Google-Smtp-Source: ACJfBostUwl6ywLbgi04yRBkPrrKA9U5UB0JMEOsm84hMQKU621uRP/eHhAnTkiPRRAytdpHzp00DPZ7U1gk2XwrFp0= MIME-Version: 1.0 In-Reply-To: <20171213171358.oocp24c2mdon45o5@plaes.org> References: <4357a69da97f46a324eec4c766f4bc9d9e7733ff.1490545262.git-series.plaes@plaes.org> <20171212172635.2utwz3koyo5iwglt@plaes.org> <20171213170933.qyfn3hgnrvjpmod7@plaes.org> <20171213171358.oocp24c2mdon45o5@plaes.org> From: Kevin Hilman Date: Wed, 13 Dec 2017 11:46:40 -0800 Message-ID: Subject: Re: [linux-sunxi] [PATCH v2 3/6] ARM: sun4i: Convert to CCU To: Priit Laes Cc: Chen-Yu Tsai , Maxime Ripard , lkml , linux-arm-kernel , devicetree , linux-clk@vger.kernel.org, linux-sunxi@googlegroups.com, Icenowy Zheng , Russell King , Mark Rutland , Rob Herring , Stephen Boyd , Michael Turquette , Philipp Zabel , Olof Johansson Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Dec 13, 2017 at 9:13 AM, Priit Laes wrote: > On Wed, Dec 13, 2017 at 05:09:33PM +0000, Priit Laes wrote: >> On Tue, Dec 12, 2017 at 01:24:52PM -0800, Kevin Hilman wrote: >> > On Tue, Dec 12, 2017 at 9:26 AM, Priit Laes wrote: >> > > On Mon, Dec 11, 2017 at 02:22:30PM -0800, Kevin Hilman wrote: >> > >> On Sun, Mar 26, 2017 at 10:20 AM, Priit Laes wrote: >> > >> > Convert sun4i-a10.dtsi to new CCU driver. >> > >> > >> > >> > Signed-off-by: Priit Laes >> > >> >> > >> I finally got around to bisecting a mainline boot failure on >> > >> sun4i-a10-cubieboard that's been happening for quite a while. Based >> > >> on on kernelci.org, it showed up sometime during the v4.15 merge >> > >> window[1]. It bisected down to this commit (in mainline as commit >> > >> 41193869f2bdb585ce09bfdd16d9482aadd560ad). >> > >> >> > >> When it fails, there is no output on the serial console, so I don't >> > >> know exactly how it's failing, just that it no longer boots. >> > > >> > > We tried out latest 4.15 with various compilers and it works: >> > > - gcc version 7.1.1 20170622 (Red Hat Cross 7.1.1-3) (GCC) - A10 Gemei G9 tablet >> > > - gcc 7.2.0-debian - A10 Cubieboard >> > >> > And you can reproduce the bug with gcc5 or gcc6? >> >> Tried following commits on Gemei G9 (A10 tablet): >> * 4.15.0-rc3-00037-gd39a01eff9af - latest master >> * 4.14.0-rc1-00002-g41193869f2bd - the exact commit, causing the issue. >> >> With the same Linaro toolchain: >> (gcc version 5.3.1 20160412 (Linaro GCC 5.3-2016.05)) > > And I also tried the same dtb and zImage from kernelci page [1] and it works with > that too... > > https://storage.kernelci.org/mainline/master/v4.15-rc3/arm/sunxi_defconfig/ Can you share a full boot-log (including all the u-boot output etc.) so I can see exactly how the kernel is being loaded? Especially the u-boot version? As $SUBJECT patch seems to be changing clocks around, perhaps this is an issue where some u-boot dependency is uncovered, and older versions of u-boot don't play well with this change. Kevin