From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj2-f38.google.com (mail-pj2-f38.google.com [74.125.227.166]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 06F091A704B for ; Mon, 5 Oct 2026 02:47:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.227.166 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791168461; cv=none; b=OghWJNSxhXU/EOtkGLqLyLwoE82thVkZRpXmCmHkukaM4WjD7M0apV9oRCfO3X5wL09UvVQI7hNJsiTDJ2+GtE0x9m6HAYjHh7esbIuM85LkSurVP7xB0CEd8DxlxKT+u5nFMiK0gsTKEI35coOEWthL1nQpr8tXNPajGRZrFvM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791168461; c=relaxed/simple; bh=ZgvtJM/DUHMnHszNUGeuhEtSEbOa/wydpZaLbhEugRE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=YNP1A2bpsxGOezL/G5aO8bMb3xpUURCeHAyYBblQniDzd9fqme0IqVR+kjrbsy2z/AXC/QF82jbL2xc6ZYPiyf/O48jZj/i2LBQ9SKUbkv9AvgflRF6ILJtcu/o+iO2Kx8vAPJwCdjwsVILJCYKOs5E/KnVuV8JZ54u98n4kdHs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=qwCEx8N2; arc=none smtp.client-ip=74.125.227.166 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="qwCEx8N2" Received: by mail-pj2-f38.google.com with SMTP id d9443c01a7336-2e2db9f927cso4677225ad.1 for ; Sun, 04 Oct 2026 19:47:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1791168459; x=1791773259; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=5fPN+9NWOFucdGixkLZfdt14fhztpKr2pAx7CYx5nGY=; b=qwCEx8N24if+xWkPq68GJKkKtl9s60/nbKvwaUX2wbOwRBayypmyc1KZdpnNltelEI z3jLKgRVzal74WKXy3R679RxS8cVQI5XCYe6tsSZu47ukr2GhBmJ38uPsVD+3ns+hqoY j4y5444l5+sJNRYec2IhVNBrRTSxgd/6zwtBL2qp1Yzsr916lfnIRx88vx6MGrJIZGHq Pcgv9o2gbXAQzFbOn2cx2jwNNvnycjML6GI77DBDJqrUnrUXjLXSWu05VEvmxUSz/y2A 9gCprrmvAsoBgeRbscyjmVpeVdpEznSEhrL7GOxUnJY8TwwSmIz2nqRoYC9Ix7mW91/L U/6A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1791168459; x=1791773259; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=5fPN+9NWOFucdGixkLZfdt14fhztpKr2pAx7CYx5nGY=; b=228lUlk0uBjCgJq9x/ZuBs7MP4tZbU0700AhCM6tt2q0x57mYWIAE8WZJDSrHuhPTO zKaJ4fPWKEACmZuRuRORI9E+qHWNkjz2t9vz6k09j5gQb19Tm0Q95KDgQQLrdUVZ6u2S tuSDR1SOmpnCNn1c2w7ohsBHT4HQ2v7+MwpLNNFW9qVFg5VO3tvsNM3tZHR6ZCH/Tt/H jF8t0CULuRNgGvP09r9FFu3lLmIELVWRoF8dDgH1mkdwdLyqg5bqoSdy6qbHlUYKjth5 Q0BFfgqGw1PaT+lmC80L7KukaLkG6EbYd4G+uDOrU0eCQyZswsCn42g0m+GFmu99/7Re kyvg== X-Forwarded-Encrypted: i=1; AKwUvBzyhHUrADJ1dcZVAseqpBrLyeAIUKi0dLCHv/xGGf6hIRscPCJR7tJnoOUZoGKHBhboGzKevwx5QWBd/80=@vger.kernel.org X-Gm-Message-State: AFq9FYIsFWS6j2eK2GjJHOOGA646c4gNSnkOrheICH/JAFElnxRVjYfu 6qYtHqhzVoUVkLuZipq3C0hOGWuCi2/b3veoI8Jn+kppXGXr+0Ertz70 X-Gm-Gg: AYBFou1SMN9Co7ZDiPUbISw2ZTx3IaxwNGwGW5dv77D9h/YTOnB/tEu6W8e9IvrJ5cO LzNRPoc9aA0WkgnL1rE9B6weX1nMLQ+nW56FzbfVIVTB7Oxk94BP6m4TefZWooXx9E/JSZTIo6e m4WWgLHshCSbD+EJMNNz0rLWCufuuA5/hSw3f9iMgyChvBL/C7Lwxp/2pcLU5iSlSKSCpOCkGoA 2stNd/Jg40ubU62+fKe9yoXtgfuaem8o2Za0MmKqlP9JSeHQJVpKyDvAWlFJvIQsH/+g2VWYZ07 YS2uZ+L7iY3h0tleQxJi5u1B8Q9baa6moWwbsXteFoh2QyqA1WCMGZd1JO7xnaMdCZWpb+OdMIk nIMwqPeOSbSLnodY9YdNsoL//WNrhXFePqC26KSwTYnDUm49+l8t8TDBgr1DKFSuOfcjpAzDIUU p+9nddJdZs3sma+0g+yVXdZa85gfUfIYOTuJN2ixOT5l8KrW/8+A8WRePy/KL1PKc+I6HEMZK1s u+gP5/6lk4G7ZMYHUz3fFm9/heZmjskgkuhOAlkXOOc8vDVNQ== X-Received: by 2002:a17:902:d511:b0:2dd:c100:4b85 with SMTP id d9443c01a7336-2e49b6ea3b8mr89037265ad.60.1791168459101; Sun, 04 Oct 2026 19:47:39 -0700 (PDT) Received: from lenovo-thinkbook.lan ([112.2.158.7]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2e5a5ef5576sm744665ad.72.2026.10.04.19.47.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 04 Oct 2026 19:47:38 -0700 (PDT) From: Yuqi Xu To: Mika Westerberg Cc: westeri@kernel.org, andi.shyti@kernel.org, linux-i2c@vger.kernel.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] i2c: acpi: Add ELAN0662 to i2c_acpi_force_100khz_device_ids Date: Mon, 5 Oct 2026 10:46:54 +0800 Message-ID: <20261005024654.26888-1-xuyuqiabc@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260918055653.GD106095@black.igk.intel.com> References: <20260918054109.23550-1-xuyuqiabc@gmail.com> <20260918055653.GD106095@black.igk.intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hi Andi, I just wanted to gently ping on this patch. It has been a little over two weeks, and Mika acked it on Sep 18. Please let me know if there is anything else you would like changed. Otherwise, I would appreciate it if you could take a look when you have a moment. Thanks for your time, Yuqi On Fri, Sep 18, 2026 at 07:56:53 +0200, Mika Westerberg wrote: > On Fri, Sep 18, 2026 at 01:41:09PM +0800, Yuqi Xu wrote: > > The ELAN0662 touchpad (04F3:317C) in the Lenovo ThinkBook 14 G4+ ARA > > (21D0) intermittently stutters and drops touches. libinput discards > > invalid touch coordinates and logs (rate limited to five messages per > > 24 hours): > > > > libinput error: event6 - ELAN0662:00 04F3:317C Touchpad: kernel > > bug: Touch jump detected and discarded. > > > > The ACPI DSDT describes the touchpad's I2cSerialBus resource on an > > AMDI0010 controller with a connection speed of 0x00061A80 (400 kHz), > > and the kernel does not lower it for this device, so the touchpad runs > > at 400 kHz. This is the same issue previously fixed for ELAN06FA and > > ELAN0678. > > > > Forcing the bus to 100 kHz was tested with a DSDT override on the > > affected machine, and the kernel confirmed the override: > > > > ACPI: Table Upgrade: override [DSDT-LENOVO-CB-01] > > > > Before the change libinput discarded three touch jumps within about a > > minute of touchpad use; after the change no touch jumps were logged > > during more than an hour of normal use. The patch itself was not build > > tested; the behaviour was validated through the ACPI table override > > above. > > > > Assisted-by: DeepSeek:deepseek-v4.1-flash > > Signed-off-by: Yuqi Xu > > Acked-by: Mika Westerberg (Intel)