From mboxrd@z Thu Jan 1 00:00:00 1970 From: Javier Martinez Canillas Subject: Re: [RFC PATCH 1/1] drm/exynos: Move platform drivers registration to module init Date: Thu, 20 Nov 2014 18:47:41 +0100 Message-ID: <546E293D.9000300@collabora.co.uk> References: <1416318821-7925-1-git-send-email-javier.martinez@collabora.co.uk> <7hh9xwxsev.fsf@deeprootsystems.com> <546CCAB8.9050402@collabora.co.uk> <7hppchsu29.fsf@deeprootsystems.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: Received: from bhuna.collabora.co.uk ([93.93.135.160]:33286 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757555AbaKTRrr (ORCPT ); Thu, 20 Nov 2014 12:47:47 -0500 In-Reply-To: <7hppchsu29.fsf@deeprootsystems.com> Sender: linux-samsung-soc-owner@vger.kernel.org List-Id: linux-samsung-soc@vger.kernel.org To: Kevin Hilman , Vivek Gautam Cc: Inki Dae , Andrzej Hajda , Krzysztof Kozlowski , "dri-devel@lists.freedesktop.org" , "linux-samsung-soc@vger.kernel.org" , Paolo Pisati , Vivek Gautam Hello, For completeness I'll comment what we talked with Kevin on IRC since probably this is the same issue that Paolo is facing. On 11/20/2014 05:41 PM, Kevin Hilman wrote: > Peach # setenv preboot "usb start; sleep 1"setenv bootargs console=tty1 console=ttySAC3,115200 debug earlyprintk rw root=/dev/mmcblk1p3 rootwait rootfstype=ext3 My kernel command line is almost the same with the difference that I'm using clk_ignore_unused and I just checked that not passing that parameter, makes linux-next to hang showing the same output log that Kevin reported. Now, the question is why this does not happen with 3.18-rc+? My guess is that the clock been disabled by the common clock framework got added recently and it used to be unmanaged and left with the state set by the bootloader since the kernel didn't know about it. That's why clk_ignore_unused was not needed. Any ideas? Best regards, Javier