From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from dd19416.kasserver.com ([85.13.139.185]:51821 "EHLO dd19416.kasserver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753344AbaH0KYu (ORCPT ); Wed, 27 Aug 2014 06:24:50 -0400 Message-ID: <53FDB1EE.6010107@herbrechtsmeier.net> Date: Wed, 27 Aug 2014 12:24:46 +0200 From: Stefan Herbrechtsmeier MIME-Version: 1.0 To: Laurent Pinchart CC: "linux-media@vger.kernel.org" Subject: Re: Problems with the omap3isp References: <53C4FC99.9050308@herbrechtsmeier.net> <3376696.nE771YBFja@avalon> <53DF513D.7010501@herbrechtsmeier.net> <5795344.auXD3SfuqM@avalon> In-Reply-To: <5795344.auXD3SfuqM@avalon> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: Hi Laurent, Am 04.08.2014 um 17:25 schrieb Laurent Pinchart: > On Monday 04 August 2014 11:24:13 Stefan Herbrechtsmeier wrote: >> Hi Laurent, >> >> thank you very much for your help. >> >> The problem is cross talk on the camera flex cable of the Gumstix Overo. >> The XCLKA signal is beside PCLK and VS. > Right, I should have mentioned that. It's a know issue, and there's not much > that can be done about it without a hardware redesign. A ground (or power > supply) signal should really have been inserted on each side of the XCLKA and > PCLK signals. Exists a list about knowing issues with the Gumstix Overo? Because I have some problems with the MMC3 too. >> Additionally the OV5647 camera tristate all outputs by default. This leads >> to HS_VS_IRQ interrupts. > This should be taken care of by pull-up or pull-down resistors on the camera > signals. I've disabled them with the Caspa camera given the low drive strength > of the buffer on the camera board, but you could enable them on your system. I have manually rework my camera adapter and change the camera clock from XCLKA to XCLKB. Additionally I have enable the pull-ups in my device tree. Now the camera sensor from the Raspberry Pi camera module works together with the Gumstix Overo. Thank you for your help, Stefan