From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.15]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id ABA76330D22; Thu, 18 Jun 2026 06:09:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.15 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781762961; cv=none; b=WmBGTAMKPGfWUTl2JmegOzcGGqvHMpzfJlEhxRhpIyrExkGOiW+u+fGRjBOaYa/RSUH2Ohsz/qWewAOpj2NF32jKAa8QQngjv4fhCq+mVqQHXI1F5c0P13Vf1809LsV/JUv6qy8+hbixOOh5s56SKVGwBzpTQkczDLJhSYSh9PY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781762961; c=relaxed/simple; bh=JI8jdQgZ9rrZMYyekQhaHyLhcPwXxgLHD61shgXfCV4=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=PZJ97gpK+vSxdcul8w1+f99SrjjSyT4jSD8ROm6RXB99IC944bDnmvwz1UibxBn547ocOHmIRKWXy2Vv2Z+VHd0GQ2EhrGXouFFyDCCb7I/zWgz6VGWEF0IaxJNJnwLtKUNJIuBQY26kEqpu6Xa77OwNopc1NES9B6KGrDSzB9s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=PBCeaO3u; arc=none smtp.client-ip=198.175.65.15 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="PBCeaO3u" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1781762960; x=1813298960; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=JI8jdQgZ9rrZMYyekQhaHyLhcPwXxgLHD61shgXfCV4=; b=PBCeaO3uxbVwmZxyf5sgnCIUdRbCJCvAOM6bMRWWp1aEzqEdsjwKYW2J /mLFnXrFY92AlNBYZI+rnlAVGkQnLDqff+FKVTA9N9+FnCFnT5HfcwrwJ Hauy92lyT0lePDRS3RxwyO4IUTI5bTuZE6jeeRRYWzM6p+D9aOp11bWlg 3XcSsUaZJFZh8G3n5T3iewnluGLd69HFQXiAvtTgJL4UfFdmDFtohuqcc C92w+6izOiYRnAy+jgW9lQLqTHp7IWh7xyQmEEeJ9UWbYvbFgZN39t1BW VsVQ04tY6LkfauYmYsTB1We/aTkftb9GxyWYbQME8Ku41f1X3ylR5e/vo A==; X-CSE-ConnectionGUID: gvl3rY81Tw2N2doW7oP6TA== X-CSE-MsgGUID: 6kN7aB1+TFOg9vXuVVoItQ== X-IronPort-AV: E=McAfee;i="6800,10657,11820"; a="86263714" X-IronPort-AV: E=Sophos;i="6.24,210,1774335600"; d="scan'208";a="86263714" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by orvoesa107.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Jun 2026 23:09:20 -0700 X-CSE-ConnectionGUID: OLmT6bKwQBiqLOrfmLp4IA== X-CSE-MsgGUID: 6iViCqluSq68Rd3HIe/JKQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.24,210,1774335600"; d="scan'208";a="248342303" Received: from black.igk.intel.com ([10.91.253.5]) by orviesa007.jf.intel.com with ESMTP; 17 Jun 2026 23:09:18 -0700 Received: by black.igk.intel.com (Postfix, from userid 1001) id 8D07495; Thu, 18 Jun 2026 08:09:16 +0200 (CEST) Date: Thu, 18 Jun 2026 08:09:16 +0200 From: Mika Westerberg To: Abhijeeth Babu Cc: Mika Westerberg , Andi Shyti , linux-i2c@vger.kernel.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] i2c: acpi: Force ELAN1300 touchpads to 100 kHz Message-ID: <20260618060916.GI2990@black.igk.intel.com> References: <20260617192611.125513-1-babu.jeeth@gmail.com> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20260617192611.125513-1-babu.jeeth@gmail.com> On Thu, Jun 18, 2026 at 12:56:11AM +0530, Abhijeeth Babu wrote: > The ELAN1300 touchpad with HID ID 04F3:3104 on the ASUS VivoBook > X513UA_KM513UA exhibits severe pointer jumps and erratic movement when > the I2C bus operates at 400 kHz. > > The system DSDT describes the touchpad using an I2cSerialBusV2 resource > with a speed of 0x00061A80, corresponding to 400 kHz, on the > AMDI0010:03 controller. > > At this speed, libinput repeatedly reports: > > kernel bug: Touch jump detected and discarded > > Add ELAN1300 to i2c_acpi_force_100khz_device_ids so that it operates at > 100 kHz. > > Before the change, nine touch-jump events were recorded, with additional > messages suppressed by libinput's rate limiter. With the bus forced to > 100 kHz, no touch-jump events have been observed and the touchpad operates > normally. > > The affected system uses BIOS X513UA.319 dated 2023-05-09. > > Signed-off-by: Abhijeeth Babu Acked-by: Mika Westerberg