From mboxrd@z Thu Jan 1 00:00:00 1970 From: Archit Taneja Subject: Re: DSS2: Simultaneous DSI and DPI panels Date: Fri, 13 May 2011 16:14:52 +0530 Message-ID: <4DCD0BA4.2050904@ti.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from comal.ext.ti.com ([198.47.26.152]:54739 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753372Ab1EMKkH (ORCPT ); Fri, 13 May 2011 06:40:07 -0400 In-Reply-To: Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Juha Kuikka Cc: "linux-omap@vger.kernel.org Mailing List" 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 > -- > To unsubscribe from this list: send the line "unsubscribe linux-omap" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >