Re: [PATCH V6 0/8] drm/exynos: few patches to enhance bridge chip support

From: Ajay kumar <ajaynumb@gmail.com>
To: "Andreas Färber" <afaerber@suse.de>
Cc: "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	"linux-samsung-soc@vger.kernel.org"
	<linux-samsung-soc@vger.kernel.org>,
	Sean Paul <seanpaul@google.com>,
	Daniel Vetter <daniel.vetter@ffwll.ch>,
	sunil joshi <joshi@samsung.com>,
	"dri-devel@lists.freedesktop.org"
	<dri-devel@lists.freedesktop.org>,
	Doug Anderson <dianders@chromium.org>,
	Javier Martinez Canillas <javier.martinez@collabora.co.uk>,
	Prashanth G <prashanth.g@samsung.com>,
	Ajay Kumar <ajaykumar.rs@samsung.com>
Subject: Re: [PATCH V6 0/8] drm/exynos: few patches to enhance bridge chip support
Date: Wed, 30 Jul 2014 11:51:13 +0530	[thread overview]
Message-ID: <CAEC9eQOpS90U9kWmY8YdcAtdxQYKoM9ikoWpkwMs6T2udLeZHA@mail.gmail.com> (raw)
In-Reply-To: <53D783CC.2080108@suse.de>

Hi Andreas,

On Tue, Jul 29, 2014 at 4:51 PM, Andreas Färber <afaerber@suse.de> wrote:
> Hi Ajay,
>
> Am 28.07.2014 08:13, schrieb Ajay kumar:
>> On 7/27/14, Andreas Färber <afaerber@suse.de> wrote:
>>> Am 25.07.2014 21:22, schrieb Ajay Kumar:
>>>> This series is based on exynos-drm-next branch of Inki Dae's tree at:
>>>> git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos.git
>>>>
>>>> I have tested this after adding few DT changes for exynos5250-snow,
>>>> exynos5420-peach-pit and exynos5800-peach-pi boards.
>>>
>>> I'm trying to test this with a modified exynos5250-spring DT based off
>>> kgene's for-next branch due to DT, and I run into the following:
>>>
>>>   CC      drivers/gpu/drm/bridge/ptn3460.o
>>> drivers/gpu/drm/bridge/ptn3460.c: In function ‘ptn3460_post_encoder_init’:
>>> drivers/gpu/drm/bridge/ptn3460.c:275:2: error: implicit declaration of
>>> function ‘drm_connector_register’ [-Werror=implicit-function-declaration]
>>>   drm_connector_register(&ptn_bridge->connector);
>>>   ^
>> Hope this might help:
>> http://www.spinics.net/lists/dri-devel/msg60578.html
>
> That fixed my build, thanks.
>
> Unfortunately the most I got on Spring with attached DT was a blank
> screen with a white horizontal line in the middle.
Then, I think bridge chip is working fine.
You just need to configure the proper mode for FIMD.
You can see backlight also, right?

> Do I need to specify a specific panel model for Spring?
Yes! Try using "chunghwa,claa101wb01" as compatible string for
panel node.

> For testing I re-applied your iommu patches (which btw fail now for 5420
> due to disp_pd) but didn't know what to do about your panel-lvds
> regulator patch now that it's gone.
Ignore that regulator patch.

Also, please attach the bootlog if possible after trying this.

Regards,
Ajay
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