linux-kernel - Re: KMS Framebuffer on Intel N2600 (GMA3600)

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Message-ID: <20121115125749.3604ebdf@pyramind.ukuu.org.uk>
Date:	Thu, 15 Nov 2012 12:57:49 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Forconi <forconi@...ecomm.it>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: KMS Framebuffer on Intel N2600 (GMA3600)

On Thu, 15 Nov 2012 09:09:35 +0000 (UTC)
Forconi <forconi@...ecomm.it> wrote:

> Hi Alan,
> thanks again for your answer.
> 
> Reading the manual of the board I found this specification:
> LVDS: 24-bit dual channel via CH7511 thru eDP
> 
> The Chrontel CH7511 is a DisplayPort (DP/eDP) to LVDS converter.
> 
> So, what I understand is that the LVDS interface that comes out
> from the connector on the board is connected to the CH7511 that
> is connected to the DP/eDP port on the CPU.
> 
> Until now I was starting the kernel with video=LVDS-1.....,
> maybe I have to use another video device like DVI to use the eDP port?

Could help explain why there is no backlight. Initial eDP support got
added to the driver very recently so it might work but it should still
have decided itself you have eDP given a current kernel.

Alan
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