From patchwork Mon Nov 25 21:20:27 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?TsOtY29sYXMgRi4gUi4gQS4gUHJhZG8=?= X-Patchwork-Id: 13885296 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 98AC0D59D71 for ; Mon, 25 Nov 2024 21:22:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To: Content-Transfer-Encoding:Content-Type:MIME-Version:Message-Id:Date:Subject: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=LuyvxCn8sD6+TwxrJm30Ftk9S3JBWhdfj1Mgj3Q1Ng0=; b=VjJlDi5SOQ9dvM ZHXFAWpby2q7T1i67VphI8vdk/T+8bIICGScy/MF+YE7RMLz3s6ADNbZQ2+2k1r4ii4KDpvn7JBoP aLreH9E6KniU7Y9nrufzvHRjjZQrDieYf1ChM5viL2nFAYEWjBo78FkyaR+jhhcjppLzor3NiummJ IwAIFeKdwfUdj5SExsC5sv0zXDzsljc/f9iMDwZ0TjmRMPMY6PxMm8NAEvHsgIeMFdY68rJEzAKbx eEWNKxba/Wbf5S5yZvQCDCfhXytwHVi+48eQbe1mt5x8nzuPZvPapdzGRvndwvbGFEgarMuZfBTV5 tQm7hS6+mpvk2yhftkUQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tFgWy-000000097S9-47j3; Mon, 25 Nov 2024 21:22:04 +0000 Received: from bali.collaboradmins.com ([2a01:4f8:201:9162::2]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tFgVx-000000097HF-38zi; Mon, 25 Nov 2024 21:21:05 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1732569657; bh=TBn4GCrh/WfYjRfNUoDjtRI7in6N7aD9t1Df+F3kcLg=; h=From:Subject:Date:To:Cc:From; b=AjJ0mxeCylxaNDYHU0wW1TaOcxTioyLmpbIZsmwJu/sQwutdwY0UokpY1zOxyvymh mMZaKTQ/XgEKCNlQkv5x8U1LFMjbononY8fRsdVlkEU/wLqgq6/XQgSXBnV2uX+wT4 JKp/Me7vxcbgJEElBqVdLQ+rpaj0jzPKLc9T3/uEmfVwu4ChFSCwtybzMWmDj0Zzzi MDR0zBfrMU9hliJaZIb7K+xYPgsRvxWcvdlmaBVQ8MH3zhOhk4Ln66tACjAV3lSJEN E792fx+Snp3dYrLZkipEMDaEw+aUJq0axVVtDc8miqfF5JFAjpDQz6rS1OqlBnMRp6 a5p6tefZD8DEw== Received: from [192.168.1.63] (pool-100-2-116-133.nycmny.fios.verizon.net [100.2.116.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: nfraprado) by bali.collaboradmins.com (Postfix) with ESMTPSA id 29EA417E37C8; Mon, 25 Nov 2024 22:20:54 +0100 (CET) From: =?utf-8?b?TsOtY29sYXMgRi4gUi4gQS4gUHJhZG8=?= Subject: [PATCH 0/5] thermal/drivers/mediatek/lvts: Fixes for suspend and IRQ storm, and cleanups Date: Mon, 25 Nov 2024 16:20:27 -0500 Message-Id: <20241125-mt8192-lvts-filtered-suspend-fix-v1-0-42e3c0528c6c@collabora.com> MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIABvqRGcC/x2NwQrCMBAFf6Xs2YXuWqH6K+IhJk9dqLFkYxFK/ 93Q48xhZiVHMThdupUKFnP75AZy6Ci+Qn6CLTUm7XUQUeF3HeWsPC3V+WFTRUFi//qMnJr4cTj 1R41hRMSdWmYuaHpfXG/b9gfgps9rcgAAAA== X-Change-ID: 20241121-mt8192-lvts-filtered-suspend-fix-a5032ca8eceb To: "Rafael J. Wysocki" , Daniel Lezcano , Zhang Rui , Lukasz Luba , Matthias Brugger , AngeloGioacchino Del Regno , Alexandre Mergnat , Balsam CHIHI Cc: kernel@collabora.com, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, Hsin-Te Yuan , Chen-Yu Tsai , =?utf-8?q?Bernhard_Rosenkr=C3=A4nzer?= , "Rafael J. Wysocki" , =?utf-8?b?TsOtY29sYXMg?= =?utf-8?b?Ri4gUi4gQS4gUHJhZG8=?= , stable@vger.kernel.org X-Mailer: b4 0.14.2 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241125_132102_751586_A60175F7 X-CRM114-Status: GOOD ( 12.32 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Patches 1 and 2 of this series fix the issue reported by Hsin-Te Yuan [1] where MT8192-based Chromebooks are not able to suspend/resume 10 times in a row. Either one of those patches on its own is enough to fix the issue, but I believe both are desirable, so I've included them both here. Patches 3-5 fix unrelated issues that I've noticed while debugging. Patch 3 fixes IRQ storms when the temperature sensors drop to 20 Celsius. Patches 4 and 5 are cleanups to prevent future issues. To test this series, I've run 'rtcwake -m mem -d 60' 10 times in a row on a MT8192-Asurada-Spherion-rev3 Chromebook and checked that the wakeup happened 60 seconds later (+-5 seconds). I've repeated that test on 10 separate runs. Not once did the chromebook wake up early with the series applied. I've also checked that during those runs, the LVTS interrupt didn't trigger even once, while before the series it would trigger a few times per run, generally during boot or resume. Finally, as a sanity check I've verified that the interrupts still work by lowering the thermal trip point to 45 Celsius and running 'stress -c 8'. Indeed they still do, and the temperature showed by the thermal_temperature ftrace event matched the expected value. [1] https://lore.kernel.org/all/20241108-lvts-v1-1-eee339c6ca20@chromium.org/ Signed-off-by: Nícolas F. R. A. Prado --- Nícolas F. R. A. Prado (5): thermal/drivers/mediatek/lvts: Disable monitor mode during suspend thermal/drivers/mediatek/lvts: Disable Stage 3 thermal threshold thermal/drivers/mediatek/lvts: Disable low offset IRQ for minimum threshold thermal/drivers/mediatek/lvts: Start sensor interrupts disabled thermal/drivers/mediatek/lvts: Only update IRQ enable for valid sensors drivers/thermal/mediatek/lvts_thermal.c | 103 ++++++++++++++++++++++---------- 1 file changed, 72 insertions(+), 31 deletions(-) --- base-commit: b852e1e7a0389ed6168ef1d38eb0bad71a6b11e8 change-id: 20241121-mt8192-lvts-filtered-suspend-fix-a5032ca8eceb Best regards,