From: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
To: linux-arm-kernel@lists.infradead.org
Subject: Re: RE: [PATCH 1/2] ARM: omapfb: add coherent dma memory support
Date: Thu, 09 Jan 2014 07:34:59 +0000 [thread overview]
Message-ID: <52CE5123.9050702@gmail.com> (raw)
In-Reply-To: <79CD15C6BA57404B839C016229A409A83EDB11F5@DBDE04.ent.ti.com>
On 09.01.2014 07:06, Hiremath, Vaibhav wrote:
> Tomi,
>
> I am seeing underflow issue on AM43x device if I use omapfb_vram argument.
> Did you see this on OMAP?
>
> I am using "omapfb_vram\x10M@0xA0000000", and I believe it is correct way of usage.
>
> Thanks,
> Vaibhav
>
AFAIK underflow interrupts could come from badly calculated DSS core
clock or bad HW resizer setup and should be unrelated to the memory
allocation. It might be something similar to the problem I have on N900
- see https://lkml.org/lkml/2014/1/6/173
Is it possible to upload the video you have problems with, so me to test
it on N900? So far I didn't see any underflow issues on it (N900 is
OMAP3, in case you're not aware), no matter the resolution of the videos
I played(up to 720p), however I didn't test the part that allocates the
memory on a pre-defined address. Though I don't think that should matter.
Ivo
next prev parent reply other threads:[~2014-01-09 7:34 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-30 13:19 [PATCH 0/2] omapfb: option to use coherent dma mem Tomi Valkeinen
2013-12-30 13:19 ` [PATCH 1/2] ARM: omapfb: add coherent dma memory support Tomi Valkeinen
2014-01-05 14:16 ` Ivaylo Dimitrov
2014-01-07 23:59 ` Tony Lindgren
2014-01-08 14:13 ` Tomi Valkeinen
2014-01-09 5:06 ` Hiremath, Vaibhav
2014-01-09 7:34 ` Ivaylo Dimitrov [this message]
2014-01-09 8:08 ` Hiremath, Vaibhav
2014-01-09 8:27 ` Tomi Valkeinen
2014-01-09 8:31 ` Hiremath, Vaibhav
2014-01-11 13:28 ` Ivaylo Dimitrov
2014-01-22 21:08 ` Ivaylo Dimitrov
2014-01-24 8:47 ` Hiremath, Vaibhav
2014-01-24 10:35 ` Tomi Valkeinen
2014-01-09 8:21 ` Tomi Valkeinen
2014-01-09 8:31 ` Hiremath, Vaibhav
2014-01-09 13:02 ` Hiremath, Vaibhav
2013-12-30 13:19 ` [PATCH 2/2] omapfb: add support to reserve fb at specified phys address Tomi Valkeinen
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