From: Tomi Valkeinen <tomi.valkeinen@ti.com>
To: linux-fbdev@vger.kernel.org
Subject: Re: OMAP3: DSS questions
Date: Mon, 09 Jan 2017 08:17:07 +0000 [thread overview]
Message-ID: <94ec010a-b8e7-0d65-3bb3-ae39fbcee14d@ti.com> (raw)
In-Reply-To: <CAGm1_ktY3djv8yp3e+w-DmtFa_9HmEkXn-d1e4AKsPGnES_Rrw@mail.gmail.com>
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On 05/01/17 18:49, Tony Lindgren wrote:
> * Yegor Yefremov <yegorslists@googlemail.com> [170104 08:27]:
>> I'm trying to get my am3517 board working with 4.10 (porting from
>> 2.6.37). An LCD screen is attached to OMAP DSS using 24 bits. Display
>> config looks like this in [1].
>>
>> What DTS options reflectes ".acb = 0x0"?
acb was only for passive matrix panels, which have never even been
supported. So you can just ignore acb.
>> Btw. I just need a frame buffer device and will use it with Embedded
>> Qt. Should I nevertheless use DRM flavor as it already provides frame
>> buffer driver?
Depends. If you somehow rely on the custom ioctls from omapfb, then it
might be easiest to use that. However, it's no longer developed, so I
suggest at least trying to use omapdrm first.
>> drivers/gpu/drm/omapdrm/displays/panel-dpi.c performs either platform
>> or OF initialization. Platform flavor contains data_lines info, OF -
>> not. As I'm using OF flavor, how do I get proper data_lines info?
With the endpoint's data-lines property. See, for example,
am437x-gp-evm.dts.
Tomi
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prev parent reply other threads:[~2017-01-09 8:17 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-04 16:25 OMAP3: DSS questions Yegor Yefremov
2017-01-05 16:49 ` Tony Lindgren
2017-01-09 8:17 ` Tomi Valkeinen [this message]
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