From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753169AbdLMNpC (ORCPT ); Wed, 13 Dec 2017 08:45:02 -0500 Received: from mail.free-electrons.com ([62.4.15.54]:35380 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753069AbdLMNo6 (ORCPT ); Wed, 13 Dec 2017 08:44:58 -0500 Date: Wed, 13 Dec 2017 14:44:46 +0100 From: Maxime Ripard To: Kevin Hilman Cc: Priit Laes , Chen-Yu Tsai , 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 Subject: Re: [linux-sunxi] [PATCH v2 3/6] ARM: sun4i: Convert to CCU Message-ID: <20171213134446.6q3iyajqtdg7px2z@flea.lan> References: <4357a69da97f46a324eec4c766f4bc9d9e7733ff.1490545262.git-series.plaes@plaes.org> <20171212172635.2utwz3koyo5iwglt@plaes.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="o4ghp3lngrezczob" Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20171027 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --o4ghp3lngrezczob Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable 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 >=20 > And you can reproduce the bug with gcc5 or gcc6? >=20 > Very strange that a DT only patch would cause a gcc related regression > and if it does, it should be investigated. I don't think requiring > gcc7 is an appropriate solution. >=20 > @Chen-Yu, @Maxime: are you guys OK with requiring gcc7 for working > upstream boot for A10? I'd rather not set that kind of constraints and fix the issue instead. Priit, can you test with an older compiler? You can find one here: http://toolchains.free-electrons.com/ Maxime --=20 Maxime Ripard, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com --o4ghp3lngrezczob Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE0VqZU19dR2zEVaqr0rTAlCFNr3QFAloxLsoACgkQ0rTAlCFN r3TahA/7BetxE9ShT3xOHs77ekpKHgm+Xz33fNf37j7jHe6rKHY+t8k0mihmErPC dgdkavcaGsloveHx2shWUa1sL9HoEoSeR88EVwGsnokfoel+dNqRQDeKBx2hb6wC G3WsTHrFqhC10334woIhJmWjE7K5vmYQAPCY2YxFpdkPtRXhs0o7O3Nk9hQdD1hz xYCp072ht7T0btZMBtey+e+4oYnWCc032vtZYEmQSdLUkgvr17an12dGvUNeewW2 varHbQkbADiAa4Kspv1nuBos/dpmspACvOr+jHKRH8obPvu09aZuYId+yPDfJ1n8 y3ox5BgykdbEhNPKilAstcf1Bd8N7Nc/zocUXmU0W0KQLRYMLht64gMpFMQv0YXg 4ENYjJb7HVi6PQ0z36yoSUL74mSvooN1J0ooRiYq1wZyY4HQw+WeQ/8O9+XUjIIZ Z4KA0lVdzGePAundbrMQhbDijYXoCJK/RCyfu9r16Ef86hD1tpEO9XZKN6LYb48p Q2//BBXOjJuyVHp4dUaEEXElEcz24X6879KNK+zjCjYtuTGch83edR6gK1kPzBVQ EFZnoU6Yfa9NKt7ZmFcfDQsbcY28e8oVPKz34Un8CSI6sgb8DOVkETX/EDDXNUYc hJx0cKA8LVdoyH95WpNjg+op3Xz2QvcJpAswuiCvNrdFoEdi8Yo= =m0Mu -----END PGP SIGNATURE----- --o4ghp3lngrezczob--