From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from galahad.ideasonboard.com ([185.26.127.97]:55465 "EHLO galahad.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965521AbcKKBbn (ORCPT ); Thu, 10 Nov 2016 20:31:43 -0500 From: Laurent Pinchart To: Xuan Truong Nguyen Cc: duclm , ryusuke.sakato.bx@renesas.com, kuninori.morimoto.gx@renesas.com, magnus.damm@gmail.com, geert+renesas@glider.be, h-inayoshi@jinso.co.jp, yoshihiro.shimoda.uh@renesas.com, nv-dung@jinso.co.jp, cm-hiep@jinso.co.jp, laurent.pinchart+renesas@ideasonboard.com, horms+renesas@verge.net.au, linux-renesas-soc@vger.kernel.org, wsa@sang-engineering.com Subject: Re: The failure summary report of GEN2 for linux stable v4.8 Date: Fri, 11 Nov 2016 03:31:46 +0200 Message-ID: <2073526.U7B9OGNC0q@avalon> In-Reply-To: <5754513.jIbGsJMV7d@avalon> References: <57A46D20.7040106@jinso.co.jp> <5754513.jIbGsJMV7d@avalon> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-renesas-soc-owner@vger.kernel.org List-ID: Hello Truong, On Friday 21 Oct 2016 14:20:24 Laurent Pinchart wrote: > On Friday 21 Oct 2016 19:53:47 Xuan Truong Nguyen wrote: > > Hello Laurent. > > > > > The document mentions that you have used shmobile_defconfig. However, > > > that configuration in v4.8 doesn't enable CONFIG_CMA, which causes at > > > least the DU driver to fail probing the device. I thus assume you have > > > modified the configuration to enable CMA. The fact that > > > shmobile_defconfig doesn't include the uvcvideo driver used by test 14 > > > seems to confirm local modifications to the configuration. > > > Issue 8 ("Lager: bad image quality when shown on HDMI display") can't be > > > reproduced on my system when displaying a test pattern with the modetest > > > application. Could you please share more information on how to reproduce > > > the problem ? > > > > We retested this issue No 8 again with the CONFIG_CMA enabled but the > > result is the same. you could see it by the error.jpg image in > > attachments. the display device used is Panasonic TH-L19C3 (refer the > > device.jpg). we also send you my configs file, too (lager_du.config). > > Thank you for the information, I'll try to reproduce the problem here with > your kernel configuration. I've been able to reproduce the problem here, and at this point I'm not sure what goes wrong. I've tested older kernels up to the point where HDMI support for Lager was introduced, and the bug was present in all of them. I'll try to fix it, but I have other higher priority tasks at the moment. > > just one more thing, with CONFIG_CMA enabled, the driver fails on > > probing if we boot the board without the HDMI cable inserted in advance. > > we have to insert the cable before booting the board. and not all the > > display work with current HDMI driver (as our LG display will not work) > > we are using the mainline upstream version 4.8 > > Interesting, I'll check that too. I haven't had time to check this yet. > > if you need any information to debug, please lets us know. > > Could you please tell me what you're using to test the display ? -- Regards, Laurent Pinchart