From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?B?QW5kcmVhcyBGw6RyYmVy?= Subject: Re: [PATCH V4 00/10] drm: exynos: few patches to enhance bridge chip support Date: Fri, 04 Jul 2014 15:06:56 +0200 Message-ID: <53B6A6F0.1070108@suse.de> References: <1402511228-18945-1-git-send-email-ajaykumar.rs@samsung.com> <53B4E7D6.6000204@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from cantor2.suse.de ([195.135.220.15]:54234 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752935AbaGDNHC (ORCPT ); Fri, 4 Jul 2014 09:07:02 -0400 In-Reply-To: Sender: linux-samsung-soc-owner@vger.kernel.org List-Id: linux-samsung-soc@vger.kernel.org To: Ajay kumar , Doug Anderson Cc: Ajay Kumar , "dri-devel@lists.freedesktop.org" , "linux-samsung-soc@vger.kernel.org" , "devicetree@vger.kernel.org" , Vincent Palatin , InKi Dae , Sean Paul , Rob Clark , Daniel Vetter , Thierry Reding , sunil joshi , Prashanth G , =?UTF-8?B?U3TDqXBoYW5lIE1hcmNoZXNpbg==?= , Rahul Sharma Hi Ajay, Am 03.07.2014 16:55, schrieb Ajay kumar: > On Thu, Jul 3, 2014 at 10:49 AM, Andreas F=C3=A4rber wrote: >> Am 11.06.2014 20:26, schrieb Ajay Kumar: >>> This series is based on exynos-drm-next branch of Inki Dae's tree a= t: >>> git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos.gi= t >>> >>> I have tested this after adding few DT changes for exynos5250-snow, >>> exynos5420-peach-pit and exynos5800-peach-pi boards. >> >> Unfortunately this series per se does not yet fix my display issues = on >> the Spring Chromebook. Can you share what dt changes you made for Sn= ow? >> >> Before, if the dp-controller dt node was present, I would get a dark >> screen immediately and I could ssh into the system shortly after. >> I worked around that by commenting the node out, which would allow m= e to >> graphically boot pretty much instantly. >> >> With these 10 patches applied on top of my dt on top of kgene's tree= , >> the last U-Boot screen stays visible for ~50 seconds, then the scree= n >> goes blank, and I can ssh in some time later. >> If I comment out the dp-controller node again, it takes long for the >> kernel boot to graphically proceed but works okay then. >> In both cases there's a gap of ~2900 seconds visible in dmesg. [...] >> https://github.com/afaerber/linux/commits/spring-next >> https://github.com/afaerber/u-boot/commits/spring > You need to add bridge chip node and panel node to use my patch serie= s. > Also, to support that you need to enable tps65090 regulator on spring= =2E >=20 > I have attached a patch which adds the bridge chip node and panel nod= e. Wow, that's more help than I expected! Many thanks. I'll strip down dp-controller accordingly for my v2. Your dt changes level again with my commenting out dp-controller. So I take it, the minute-long delay is regulator-induced somehow. > Also, I have attached a sample config which I used to compile the ker= nel. I simply answered y to all your new options. :) > Doug can help you in adding changes required for tps65090. Hm, Doug had pointed out an issue with tps65090 in my v1, so I dropped it: https://patchwork.kernel.org/patch/4397321/ Regards, Andreas --=20 SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 N=C3=BCrnberg, Germany GF: Jeff Hawn, Jennifer Guild, Felix Imend=C3=B6rffer; HRB 16746 AG N=C3= =BCrnberg