Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support

From: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
To: Ajay kumar <ajaynumb@gmail.com>,
	Tomi Valkeinen <tomi.valkeinen@ti.com>,
	Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Ajay Kumar <ajaykumar.rs@samsung.com>,
	"dri-devel@lists.freedesktop.org"
	<dri-devel@lists.freedesktop.org>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	"linux-samsung-soc@vger.kernel.org"
	<linux-samsung-soc@vger.kernel.org>,
	InKi Dae <inki.dae@samsung.com>,
	Kukjin Kim <kgene.kim@samsung.com>,
	Sean Paul <seanpaul@google.com>,
	Thierry Reding <thierry.reding@gmail.com>,
	Daniel Vetter <daniel.vetter@ffwll.ch>,
	Pannaga Bhushan Reddy Patel <bhushan.r@samsung.com>,
	Prashanth G <prashanth.g@samsung.com>,
	gustavo Padovan <gustavo.padovan@collabora.co.uk>
Subject: Re: [PATCH V8 00/14] drm/exynos: few patches to enhance bridge chip support
Date: Wed, 19 Nov 2014 10:35:40 +0100	[thread overview]
Message-ID: <546C646C.4060303@collabora.co.uk> (raw)
In-Reply-To: <CAEC9eQOrKw2Z1q-ztFfadXmsL3CTcAkkv9kcS2QnDOAVSh2AuQ@mail.gmail.com>

Hello Ajay,

On 11/18/2014 07:20 AM, Ajay kumar wrote:
> On Sat, Nov 15, 2014 at 3:24 PM, Ajay Kumar <ajaykumar.rs@samsung.com> wrote:
>> This series is based on master branch of Linus tree at:
>> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

I applied your series on top of 3.18-rc5 + linux-next's commit:

0ef76ae ("ARM: exynos_defconfig: Enable options for display panel support").

I think you should had mentioned what other patches are needed as a
dependency since I spent quite a bit of time figuring out why the
ps8622 bridge driver probe was always deferred due of_drm_find_panel()
failing and then I noticed that a patch from linux-next was needed:

e35e305 ("drm/panel: simple: Add AUO B116XW03 panel support")

With that commit the ps8622 drm bridge driver probe succeed but I still
don't have display working on an Exynos5240 Peach Pit, the kernel log shows:

platform 145b0000.dp-controller: Driver exynos-dp requests probe deferral
exynos-drm exynos-drm: bound 14400000.fimd (ops fimd_component_ops)
exynos-drm exynos-drm: failed to bind 145b0000.dp-controller (ops exynos_dp_ops): -517
exynos-drm exynos-drm: master bind failed: -517
platform 145b0000.dp-controller: Driver exynos-dp requests probe deferral

Any idea what else I could be missing here?

Your patches don't apply cleanly in linux-next btw, although the are many
issues with the Exynos DRM currently in linux-next anyways so probably using
3.18-rc as a base makes more sense for now until all those things get fixed
but you should rebase so they can be picked.

Best regards,
Javier