From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail.bugwerft.de ([46.23.86.59]:34620 "EHLO mail.bugwerft.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750747AbdJYMSZ (ORCPT ); Wed, 25 Oct 2017 08:18:25 -0400 Subject: Re: [PATCH v4 04/21] doc: media/v4l-drivers: Add Qualcomm Camera Subsystem driver document To: Todor Tomov Cc: mchehab@kernel.org, hans.verkuil@cisco.com, s.nawrocki@samsung.com, sakari.ailus@iki.fi, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org References: <1502199018-28250-1-git-send-email-todor.tomov@linaro.org> <1502199018-28250-5-git-send-email-todor.tomov@linaro.org> <7483f716-4240-899f-f9c5-23c6408f39ff@linaro.org> <3c042974-4118-957b-c9e8-411b30ed5909@linaro.org> From: Daniel Mack Message-ID: Date: Wed, 25 Oct 2017 14:18:22 +0200 MIME-Version: 1.0 In-Reply-To: <3c042974-4118-957b-c9e8-411b30ed5909@linaro.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-media-owner@vger.kernel.org List-ID: Hi Todor, On Wednesday, October 25, 2017 02:07 PM, Todor Tomov wrote: > On 16.10.2017 18:01, Daniel Mack wrote: >> I'd be grateful for any pointer about what I could investigate on. >> > > Everything that you have described seems correct. > > As you say that frames do not contain any data, do > VFE_0_IRQ_STATUS_0_IMAGE_MASTER_n_PING_PONG > fire at all or not? > > Do you see any interrupts on the ISPIF? Which? > > Could you please share what hardware setup you have - mezzanine and camera module. Thanks for your reply! I now got it working, at least as far as camss is concerned. I can confirm the camss driver is working for 4 lanes, and that the DTS settings described above are correct. Some of the problems I had were related to the sensor driver reporting wrong clock values, which in turn caused camss to not configure its hardware clocks correctly. Linux userspace does not seem to be prepared for Bayer 10bit packed formats at all however, but that's out of scope for this list I guess. Thanks again! Daniel