From patchwork Sat Oct 10 14:31:17 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yakir Yang X-Patchwork-Id: 7366721 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id EA9319F1B9 for ; Sat, 10 Oct 2015 14:33:56 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id D571520873 for ; Sat, 10 Oct 2015 14:33:55 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C06AB20857 for ; Sat, 10 Oct 2015 14:33:54 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZkvBj-0000B8-Bk; Sat, 10 Oct 2015 14:31:55 +0000 Received: from lucky1.263xmail.com ([211.157.147.130]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZkvBd-0008W4-VY; Sat, 10 Oct 2015 14:31:52 +0000 Received: from ykk?rock-chips.com (unknown [192.168.167.131]) by lucky1.263xmail.com (Postfix) with SMTP id 635A71E7D6C; Sat, 10 Oct 2015 22:31:20 +0800 (CST) X-263anti-spam: KSV:0; X-MAIL-GRAY: 1 X-MAIL-DELIVERY: 0 X-KSVirus-check: 0 X-ABS-CHECKED: 4 X-ADDR-CHECKED: 0 Received: from [192.168.2.101] (localhost.localdomain [127.0.0.1]) by smtp.263.net (Postfix) with ESMTP id D45B33FE; Sat, 10 Oct 2015 22:31:14 +0800 (CST) X-RL-SENDER: ykk@rock-chips.com X-FST-TO: linux-arm-kernel@lists.infradead.org X-SENDER-IP: 58.22.7.114 X-LOGIN-NAME: ykk@rock-chips.com X-UNIQUE-TAG: X-ATTACHMENT-NUM: 0 X-SENDER: ykk@rock-chips.com X-DNS-TYPE: 0 Received: from [192.168.2.101] (unknown [58.22.7.114]) by smtp.263.net (Postfix) whith ESMTP id 31517NL629Q; Sat, 10 Oct 2015 22:31:18 +0800 (CST) Message-ID: <56192135.2080608@rock-chips.com> Date: Sat, 10 Oct 2015 22:31:17 +0800 From: Yakir Yang User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.8.0 MIME-Version: 1.0 To: Javier Martinez Canillas , Inki Dae , Andrzej Hajda , Joonyoung Shim , Seung-Woo Kim , Kyungmin Park , Jingoo Han , Heiko Stuebner , Mark Yao , Thierry Reding , joe@perches.com, Krzysztof Kozlowski , Rob Herring Subject: Re: [PATCH v5 0/17] Add Analogix Core Display Port Driver References: <1441086371-24838-1-git-send-email-ykk@rock-chips.com> <1442906428-2609-1-git-send-email-ykk@rock-chips.com> <5614BADD.1070307@rock-chips.com> <5614DBE2.6080102@osg.samsung.com> <5614DFBC.8060105@rock-chips.com> <5614E553.6060108@osg.samsung.com> <5614FC6B.4080702@rock-chips.com> <56150128.2070309@osg.samsung.com> <5615BB93.9020008@rock-chips.com> In-Reply-To: <5615BB93.9020008@rock-chips.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20151010_073151_256122_6B942DFD X-CRM114-Status: GOOD ( 22.14 ) X-Spam-Score: -1.9 (-) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-samsung-soc@vger.kernel.org, Russell King , Pawel Moll , Ian Campbell , David Airlie , linux-kernel@vger.kernel.org, emil.l.velikov@gmail.com, dianders@chromium.org, djkurtz@chromium.org, Kishon Vijay Abraham I , linux-rockchip@lists.infradead.org, Kukjin Kim , Sean Paul , dri-devel@lists.freedesktop.org, Kumar Gala , ajaynumb@gmail.com, robherring2@gmail.com, Andy Yan , Gustavo Padovan , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Hi Javier, On 10/08/2015 08:40 AM, Yakir Yang wrote: > On 10/07/2015 07:25 PM, Javier Martinez Canillas wrote: >> On 10/07/2015 01:05 PM, Yakir Yang wrote: >>> On 10/07/2015 05:26 PM, Javier Martinez Canillas wrote: >>>> On 10/07/2015 11:02 AM, Yakir Yang wrote: >>>>> On 10/07/2015 04:46 PM, Javier Martinez Canillas wrote: >>>>>> On 10/07/2015 08:25 AM, Yakir Yang wrote: >>>>>>> Hi all, >>>>>>> >>>>>>> Friendly ping..... :) >>>>>>> >>>>>>> >>>>>>> Best regards, >>>>>>> - Yakir >>>>>>> >>>>>>> >>>>>> Do you have a tree that I can use to test these patches? >>>>> Wow, thanks a lot, I do have a tree on github >>>>> [https://github.com/yakir-Yang/linux/tree/analogix_dp], >>>>> crossing my finger, wish things works...... ;) >>>>> >>>> I tried your analogix_dp branch on an Exynos5800 Peach Pi Chromebook >>>> but the machine didn't boot. Unfortunately I need to do some soldering >>>> to have a serial console on this board so don't have a kernel boot >>>> log. >>>> >>>> I'll let you know if I can get more info about this issue. >>> Whoops, sorry for the failed, much appreciated for your works. >>> >>> Besides, I thought maybe I can find a Peach Pit Chromebook in my side, >>> I remember that some of our guys have brought one, but previously I >>> thought that mainline kernel wouldn't run on Peach Pit directly. >>> >> Great, mainline works correctly on all Exynos based Chromebooks. >> >>> Maybe you can email me the method the run mainline kernel on Peach >>> Pit, so I can debug the analogix_dp driver at the same time, that would >>> be great. >> I wrote a little blog post explaining how to run mainline on these >> boards: >> >> http://blogs.s-osg.org/install-linux-mainline-kernel-distro-exynos-chromebooks/ >> >> >> That explains the simplest setup though so if you need a different one >> (i.e: chain loading a non verified u-boot) or if you have any questions, >> feel free to contact me in private and I can help you with the setup. >> > > Ah, thanks, gonna to step-by-step. Thanks for your great material, although I meet some problems in the step-by-step process, and failed at this way to setup mainline kernel environment on Exynos chromebooks. But i do find another way to install mainline kernel to Exynos Chromebook: 1. Install any ChromeOS image into a USB media device (like dd tools) 2. "enable_dev_usb_boot" on Exynos chromebooks which would allowed boot from USB. 3. Flash the mainline kernel into the KERNEL-A and KERNEL-B partitions on host PC. 4. Insert USB device into Exynos chromebooks, and press CTRL+U, boot into USB OS. And it's better to enable pstore function on mainline kernel, so we can analysis the last log when the mainline kernel crashed. After enable PSTORE_RAM in .config, we still need add ramoops node into file, like: Anyway I'm going to send the v6 series, thanks for your good idea. - Yakir > > - Yakir > >>>> Also, there is Kconfig recursive dependency that you may want to fix: >>>> >>>> $ make exynos_defconfig >>>> drivers/video/fbdev/Kconfig:5:error: recursive dependency detected! >>>> drivers/video/fbdev/Kconfig:5: symbol FB is selected by >>>> DRM_KMS_FB_HELPER >>>> drivers/gpu/drm/Kconfig:34: symbol DRM_KMS_FB_HELPER depends on >>>> DRM_KMS_HELPER >>>> drivers/gpu/drm/Kconfig:28: symbol DRM_KMS_HELPER is selected by >>>> DRM_ANALOGIX_DP >>>> drivers/gpu/drm/bridge/analogix/Kconfig:1: symbol DRM_ANALOGIX_DP >>>> is selected by DRM_EXYNOS_DP >>>> drivers/gpu/drm/exynos/Kconfig:57: symbol DRM_EXYNOS_DP depends on >>>> DRM_EXYNOS_FIMD >>>> drivers/gpu/drm/exynos/Kconfig:19: symbol DRM_EXYNOS_FIMD depends >>>> on FB_S3C >>>> drivers/video/fbdev/Kconfig:2023: symbol FB_S3C depends on FB >>> Yeah, recursive dependency detected, guess I should remove the >>> "DRM_KMS_HELPER" from bridge analogix_dp Kconfig file, thanks >>> for your remind. >>> >>> --- a/drivers/gpu/drm/bridge/analogix/Kconfig >>> +++ b/drivers/gpu/drm/bridge/analogix/Kconfig >>> @@ -1,4 +1,3 @@ >>> config DRM_ANALOGIX_DP >>> tristate >>> depends on DRM >>> - select DRM_KMS_HELPER >>> >>> >> That fixes the recursive dependency issue indeed. Thanks. >> >>> Thanks, >>> - Yakir >> Best regards, > --- a/arch/arm/boot/dts/exynos5250.dtsi +++ b/arch/arm/boot/dts/exynos5250.dtsi @@ -750,6 +750,15 @@ iommu = <&sysmmu_gsc3>; }; + ramoops: ramoops { + compatible = "ramoops"; + name = "ramoops"; + reg = <0x41f00000 0x100000>; + record-size = <0x20000>; + dump-oops; + status = "okay"; + }; + hdmi: hdmi { compatible = "samsung,exynos4212-hdmi"; reg = <0x14530000 0x70000>; Aha, I have tested this series on two Exynos Chromebooks that I borrowed(Snow and Peach Pit) with previously method (actually I believed it's a common method without broken the original ChromeOS image). And I do find the crash place that make you failed at this series, here is the diff changes: diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index 5f8fc11..bcbc009 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -1169,6 +1169,7 @@ static int analogix_dp_create_bridge(struct drm_device *drm_dev, dp->bridge = bridge; + dp->encoder->bridge = bridge; bridge->driver_private = dp; bridge->encoder = dp->encoder; bridge->funcs = &analogix_dp_bridge_funcs; --- a/arch/arm/boot/dts/exynos5420-peach-pit.dts +++ b/arch/arm/boot/dts/exynos5420-peach-pit.dts @@ -151,7 +151,7 @@ samsung,color-depth = <1>; samsung,link-rate = <0x06>; samsung,lane-count = <2>; - hpd-gpio = <&gpx2 6 0>; + hpd-gpios = <&gpx2 6 0>; ports { port@0 {