From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.21]) (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 0F69B480DEC; Tue, 19 May 2026 10:05:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.21 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779185134; cv=none; b=g9i5bsxzcAEOKsslCbV0TCm+ARMCxm/lxVnafOP/QjJD9QIXSeQO78x6URRM2BEBUuSQQu7tY2oGmppLrpK9u/xIMdfEITKLxQAI9l9lpOaZOJOXeH0wY/LOWwaR+qZh9lMr27Xwzfn66fW21ib70TfAjhunSlD+olgvmDxqatA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779185134; c=relaxed/simple; bh=JfHxkiYYYsRZk/sQ8UDVFTOv9W9E8MI4MSUnUR+6nQE=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=ZgbHQ5TBP3IRDZogp30moj4DmVhkkrMgoCM39GezmWaKZ580JdTCx9rzN1z4PLiuqHYHKQRv077ApI1Bm2BayJrQWjawsaGhPJKkPAvF67cLYAskM8fxfTjiJ9I3wUQE+C8cKRz/jb0kd0/fnSKcWMp73OsWfHqF6xrHcozvveg= 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=UfTaMXs3; arc=none smtp.client-ip=198.175.65.21 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="UfTaMXs3" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1779185133; x=1810721133; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=JfHxkiYYYsRZk/sQ8UDVFTOv9W9E8MI4MSUnUR+6nQE=; b=UfTaMXs3TX6/uRvMYT2WO+5gUY48f2zlnsT5/AXvN9WgsknIPKRHUTwY XZClMemRV++Kg7A6IEn+uxVZzjlRTGzvVmqs9AAhlu1Xsuip46uSSqsDH IkmjMWcMtLSVh9k8accyU3r4OeXKod55WrznkdocddUqKVuSuMq0mvAnP omh0/L76KcrhTFmVkVAFhgrSBW1RXJ9eX4bSr073Bl32c2Fj86OCD+MDI IWQdj61EhINXYGkUD7KS5S7r4/PEye5jUFw3k8OlmHUY+Jmp17/I2U6BL StmMsL2S2lt5XeYXKqNb0uGbfDYyUDdc6hOrC2rOgL9B3cmvNhs3e9W1+ Q==; X-CSE-ConnectionGUID: /wBrlr+uTJerJq6KG8Up7Q== X-CSE-MsgGUID: hBi9yKnZSZORN25fdjur5Q== X-IronPort-AV: E=McAfee;i="6800,10657,11790"; a="79959210" X-IronPort-AV: E=Sophos;i="6.23,243,1770624000"; d="scan'208";a="79959210" Received: from fmviesa005.fm.intel.com ([10.60.135.145]) by orvoesa113.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 May 2026 03:05:32 -0700 X-CSE-ConnectionGUID: 3vtqKRjZQiGb3zoXjJ9+IA== X-CSE-MsgGUID: X/trvKl+Tj2ryzVUEMbRPQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,243,1770624000"; d="scan'208";a="244714976" Received: from black.igk.intel.com ([10.91.253.5]) by fmviesa005.fm.intel.com with ESMTP; 19 May 2026 03:05:30 -0700 Received: by black.igk.intel.com (Postfix, from userid 1001) id 1F83E95; Tue, 19 May 2026 12:05:29 +0200 (CEST) Date: Tue, 19 May 2026 12:05:29 +0200 From: Mika Westerberg To: Jacob Bazata Cc: wsa+renesas@sang-engineering.com, westeri@kernel.org, linux-i2c@vger.kernel.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, Andy Shevchenko Subject: Re: [PATCH] i2c: acpi: Add VEN_04F3 to i2c_acpi_force_100khz_device_ids Message-ID: <20260519100529.GA8580@black.igk.intel.com> References: <20260519052424.7591-1-jacobbazata@gmail.com> Precedence: bulk X-Mailing-List: linux-i2c@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: <20260519052424.7591-1-jacobbazata@gmail.com> Hi, On Tue, May 19, 2026 at 01:24:24AM -0400, Jacob Bazata wrote: > This model trackpad (04F3:32AA), found on various Dell XPS models > from 2023 including XPS 9500, 9510, 9520 and 9530 is well documented to, > at random, exhibit excessive smoothing with no obvious cause, similar > to other trackpad devices listed in the i2c_acpi_force_100khz_device > _ids struct. > > Forcing the bus to 100KHz eliminates this behavior. > > Signed-off-by: Jacob Bazata > --- > drivers/i2c/i2c-core-acpi.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c > index 28c0e4884..512ebdfcc 100644 > --- a/drivers/i2c/i2c-core-acpi.c > +++ b/drivers/i2c/i2c-core-acpi.c > @@ -373,6 +373,7 @@ static const struct acpi_device_id i2c_acpi_force_100khz_device_ids[] = { > { "DLL0945", 0 }, > { "ELAN0678", 0 }, > { "ELAN06FA", 0 }, > + { "VEN_04F3", 0 }, This is interesting ACPI ID. Adding Andy just in case he has any comments on it. I'm fine with this. > {} > }; > > -- > 2.54.0