From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mailout-de.gmx.net ([213.165.64.22]:57661 "HELO mailout-de.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1752841Ab2JANFQ (ORCPT ); Mon, 1 Oct 2012 09:05:16 -0400 Message-ID: <5069958E.3090407@gmx.net> Date: Mon, 01 Oct 2012 15:07:26 +0200 From: Andreas Nagel MIME-Version: 1.0 To: Laurent Pinchart CC: linux-media@vger.kernel.org Subject: Re: Integrate camera interface of OMAP3530 in Angstrom Linux References: <5048E4A4.40901@gmx.net> <1545584.uHsE0d20W1@avalon> In-Reply-To: <1545584.uHsE0d20W1@avalon> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: Hi Laurent, thanks for your reply. Using a current mainline kernel is a little problematic. Recently I compiled the 2.6.39 and it wasn't able to boot at all. The reason for this are probably the chips, that are built on the CPU module. Usually, a working kernel for this module was undergoing some modifications by Technexion because of these chips. Currently, Technexion only offers the 2.6.32. and 2.6.37 kernel. The latter one makes a new device node /dev/media0 available (after activating some 'experimental' marked options in the kernel config), but I wasn't able to capture any signal. I'm going to try the latest mainline kernel, but I doubt it will work. Kind regards, Andreas Am 26.09.2012 13:41, schrieb Laurent Pinchart: > Hi Andreas, > > On Thursday 06 September 2012 20:00:04 Andreas Nagel wrote: >> Hello, >> >> I am using an embedded module called TAO-3530 from Technexion, which has >> an OMAP3530 processor. >> This processor has a camera interface, which is part of the ISP >> submodule. For an ongoing project I want to capture a video signal from >> this interface. After several days of excessive research I still don't >> know, how to access it. >> I configured the Angstrom kernel (2.6.32), so that the driver for OMAP 3 >> camera controller (and all other OMAP 3 related things) is integrated, >> but I don't see any new device nodes in the filesystem. > You should upgrade to a much more recent kernel, as the driver for the OMAP3 > ISP included in the Angstrom 2.6.32 kernel is just bad legacy code that should > be burried in a very deep cave. > >> I also found some rumors, that the Media Controller Framework or driver >> provides the device node /dev/media0, but I was not able to install it. > You will need to upgrade your kernel for that. I'd advise going for the latest > mainline kernel. > >> I use OpenEmbedded, but I don't have a recipe for Media Controller. On >> the Angstrom website ( http://www.angstrom-distribution.org/repo/ ) >> there's actually a package called "media-ctl", but due to the missing >> recipe, i can't install it. Can't say, I am an expert in OE. >> >> Can you help me point out, what's necessary to make the camera interface >> accessible?