From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BEF3EC38145 for ; Fri, 2 Sep 2022 11:28:43 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A631810E7DA; Fri, 2 Sep 2022 11:28:33 +0000 (UTC) Received: from smtp.domeneshop.no (smtp.domeneshop.no [IPv6:2a01:5b40:0:3005::1]) by gabe.freedesktop.org (Postfix) with ESMTPS id 52FBC10E7DA; Fri, 2 Sep 2022 11:28:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=tronnes.org ; s=ds202112; h=Content-Transfer-Encoding:Content-Type:In-Reply-To:From: References:Cc:To:Subject:MIME-Version:Date:Message-ID:Sender:Reply-To: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=3P4G0s8jHHnMDuhy8+v0Q+ixmj390VbhdMQwj5y5Wjc=; b=bZtQWi7EyAVPLA42Rzf8cb5JdM G/3PyoSsE4+TzQ45xyyuvyIG/+TEOpTWEC9Otb+gWl6o0joUn+Fb2soBCKyda0m/awdEZrUKc7uak z51s4DGVhtB++KNaE9LcvK41LZ+PM5S/HiBly41wGr52SLb4ElQBdb5IssVAsOaMMzlyCEgKM7B4P wiVGMqooxE9e6urqnga+WXRKxxZVYoGuxulJw2ZV1V29cJpJe+yW0s0LvhhpPHIehl5vgWFClYJI4 xk9vQt5rQTEuzB79xm1Vd+fefkG8uvdSATf2/klQmygxH9N0KRAJEPTZEgVWsKx0Q385qyG2Lyz62 t3IxvyDQ==; Received: from [2a01:799:961:d200:cca0:57ac:c55d:a485] (port=64065) by smtp.domeneshop.no with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1oU4qX-0004pl-Pv; Fri, 02 Sep 2022 13:28:25 +0200 Message-ID: <020d44e6-884b-a817-8265-3461638cac71@tronnes.org> Date: Fri, 2 Sep 2022 13:28:16 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.13.0 Subject: Re: [PATCH v2 00/41] drm: Analog TV Improvements To: Maxime Ripard , Maxime Ripard , Ben Skeggs , David Airlie , Chen-Yu Tsai , Thomas Zimmermann , Jani Nikula , Lyude Paul , Philipp Zabel , Maarten Lankhorst , Rodrigo Vivi , Tvrtko Ursulin , Jernej Skrabec , Samuel Holland , Karol Herbst , Emma Anholt , Daniel Vetter , Joonas Lahtinen , Dom Cobley References: <20220728-rpi-analog-tv-properties-v2-0-459522d653a7@cerno.tech> <24e09a29-6d04-3b1e-63ce-cd3c31d350e2@tronnes.org> From: =?UTF-8?Q?Noralf_Tr=c3=b8nnes?= In-Reply-To: <24e09a29-6d04-3b1e-63ce-cd3c31d350e2@tronnes.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Dave Stevenson , nouveau@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-sunxi@lists.linux.dev, Hans de Goede , =?UTF-8?Q?Noralf_Tr=c3=b8nnes?= , Geert Uytterhoeven , Mateusz Kwiatkowski , Phil Elwell , linux-arm-kernel@lists.infradead.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Den 01.09.2022 21.35, skrev Noralf Trønnes: > > > I have finally found a workaround for my kernel hangs. > > Dom had a look at my kernel and found that the VideoCore was fine, and > he said this: > >> That suggests cause of lockup was on arm side rather than VC side. >> >> But it's hard to diagnose further. Once you've had a peripheral not >> respond, the AXI bus locks up and no further operations are possible. >> Usual causes of this are required clocks being stopped or domains >> disabled and then trying to access the hardware. >> > > So when I got this on my 64-bit build: > > [ 166.702171] SError Interrupt on CPU1, code 0x00000000bf000002 -- SError > [ 166.702187] CPU: 1 PID: 8 Comm: kworker/u8:0 Tainted: G W > 5.19.0-rc6-00096-gba7973977976-dirty #1 > [ 166.702200] Hardware name: Raspberry Pi 4 Model B Rev 1.1 (DT) > [ 166.702206] Workqueue: events_freezable_power_ thermal_zone_device_check > [ 166.702231] pstate: 200000c5 (nzCv daIF -PAN -UAO -TCO -DIT -SSBS > BTYPE=--) > [ 166.702242] pc : regmap_mmio_read32le+0x10/0x28 > [ 166.702261] lr : regmap_mmio_read+0x44/0x70 > ... > [ 166.702606] bcm2711_get_temp+0x58/0xb0 [bcm2711_thermal] > > I wondered if that reg read was stalled due to a clock being stopped. > > Lo and behold, disabling runtime pm and keeping the vec clock running > all the time fixed it[1]. > > I don't know what the problem is, but at least I can now test this patchset. > > [1] https://gist.github.com/notro/23b984e7fa05cfbda2db50a421cac065 > It turns out I didn't have to disable runtime pm: https://gist.github.com/notro/0adcfcb12460b54e54458afe11dc8ea2 Noralf.