From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from www3345.sakura.ne.jp ([49.212.235.55]:60222 "EHLO www3345.sakura.ne.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965233AbcKKCon (ORCPT ); Thu, 10 Nov 2016 21:44:43 -0500 Subject: Re: The failure summary report of GEN2 for linux stable v4.8 To: Laurent Pinchart References: <57A46D20.7040106@jinso.co.jp> <5754513.jIbGsJMV7d@avalon> <2073526.U7B9OGNC0q@avalon> 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 From: Xuan Truong Nguyen Message-ID: Date: Fri, 11 Nov 2016 11:44:37 +0900 MIME-Version: 1.0 In-Reply-To: <2073526.U7B9OGNC0q@avalon> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-renesas-soc-owner@vger.kernel.org List-ID: Hi Laurent please check this when you have time. If you need any information, let us know. thanks and best regard JINSO/Truong On 2016年11月11日 10:31, Laurent Pinchart wrote: > 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 ?