From: Archit Taneja <archit@ti.com>
To: Juha Kuikka <juha.kuikka@gmail.com>
Cc: "linux-omap@vger.kernel.org Mailing List" <linux-omap@vger.kernel.org>
Subject: Re: DSS2: Simultaneous DSI and DPI panels
Date: Fri, 13 May 2011 16:14:52 +0530 [thread overview]
Message-ID: <4DCD0BA4.2050904@ti.com> (raw)
In-Reply-To: <BANLkTi=1XZyu6hQq7RLxcjQ0WZ8neGbNcQ@mail.gmail.com>
Hi,
On Friday 13 May 2011 12:46 AM, Juha Kuikka wrote:
> Hello,
>
> I was wondering if it would be possible to run DPI and DSI interfaces
> simultaneously with OMAP3 (DM3730).
>
> Limitations:
> - DSI would have to be in video mode (data to DSI phy through video
> port with H/VSYNC signaling, OMAP_DSS_PARALLELMODE_BYPASS)
> - DSI PLL would need to be used for clock source
> - Both the DPI and DSI panels would have to accept identical clocking
> (PCLK, blanking intervals etc).
> - Data lane # must match.
> - And of course same data would go to both
>
> I realize the current SW does not support this, but I'm more wondering
> if it is possible from the HW point of view because it seems to me
> that data out from DISPC is pretty much identical in both cases.
I don't think this is possible on OMAP3, there is one LCD manager in
OMAP3 which can either feed pixels to DPI or DSI.
The only way you could run 2 panels is by routing LCD manager's content
to DPI, and use DSI's capability to do a system DMA directly and send
the data to the panel(bypassing DISPC), I don't think the system DMA
method will work with a video mode panel, only command mode panels will
do here.
Archit
>
> - Juha
> --
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next prev parent reply other threads:[~2011-05-13 10:40 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-12 19:16 DSS2: Simultaneous DSI and DPI panels Juha Kuikka
2011-05-13 10:44 ` Archit Taneja [this message]
2011-05-13 11:18 ` Tomi Valkeinen
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