From patchwork Wed Sep 10 11:17:28 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Will Deacon X-Patchwork-Id: 4876231 Return-Path: X-Original-To: patchwork-linux-samsung-soc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id BABFB9F371 for ; Wed, 10 Sep 2014 11:18:26 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 9E1F020179 for ; Wed, 10 Sep 2014 11:18:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 48C58200F0 for ; Wed, 10 Sep 2014 11:18:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751587AbaIJLSX (ORCPT ); Wed, 10 Sep 2014 07:18:23 -0400 Received: from cam-admin0.cambridge.arm.com ([217.140.96.50]:62442 "EHLO cam-admin0.cambridge.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751338AbaIJLSX (ORCPT ); Wed, 10 Sep 2014 07:18:23 -0400 Received: from arm.com (edgewater-inn.cambridge.arm.com [10.1.203.204]) by cam-admin0.cambridge.arm.com (8.12.6/8.12.6) with ESMTP id s8ABHSwo003679; Wed, 10 Sep 2014 12:17:28 +0100 (BST) Date: Wed, 10 Sep 2014 12:17:28 +0100 From: Will Deacon To: Javier Martinez Canillas Cc: Grant Likely , Mark Brown , Tomasz Figa , "kgene.kim@samsung.com" , Doug Anderson , "linux-samsung-soc@vger.kernel.org" , "olof@lixom.net" , "linux-arm-kernel@lists.infradead.org" , "rahul.sharma@samsung.com" , Stephen Warren Subject: Re: Unable to boot mainline on snow chromebook since 3.15 Message-ID: <20140910111728.GG28488@arm.com> References: <20140905122232.GP13515@arm.com> <540C202E.2060009@collabora.co.uk> <540C7F5B.6070307@gmail.com> <540C83DE.10505@collabora.co.uk> <540C8577.2070907@gmail.com> <20140908112112.GK26030@arm.com> <20140908134937.GK4015@sirena.org.uk> <540DB7B4.4060300@collabora.co.uk> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <540DB7B4.4060300@collabora.co.uk> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org X-Spam-Status: No, score=-9.4 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP On Mon, Sep 08, 2014 at 03:05:40PM +0100, Javier Martinez Canillas wrote: > Hello Will, Hi Javier, > Since many folks don't agree that hacking different subsystems is the way > forward I'll hold the patches and don't post them. The sunxi thread [0] > already shows how different people have strong opposite positions on the > correct approach to handle this. > > For now you can just disable the tps65090 PMIC support by not enabling the > CONFIG_REGULATOR_TPS65090 kconfig symbol on your kernel config. That will give > you exactly the same behavior that before tps65090 support was added to the > Snow DT on commit b16be76 ("ARM: dts: add tps65090 power regulator for > exynos5250-snow") which AFAIU was good enough for your workflow. Disabling the regulator support gives me my framebuffer back, thanks. I then get stuck mounting my root filesystem over sd card because it's reported as read-only. The following hack solved the issue, but I'm not exactly sure where this regression has come from (whether this is a board quirk or pinctrl is really misconfigured). Will --->8 --- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/arch/arm/boot/dts/exynos5250-snow.dts b/arch/arm/boot/dts/exynos5250-snow.dts index f2b8c41..932d82e 100644 --- a/arch/arm/boot/dts/exynos5250-snow.dts +++ b/arch/arm/boot/dts/exynos5250-snow.dts @@ -231,6 +231,7 @@ }; mmc@12220000 { + disable-wp; status = "okay"; };