From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.zeus03.de (zeus03.de [194.117.254.33]) (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 B6EC137700A for ; Mon, 4 May 2026 09:19:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=194.117.254.33 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777886349; cv=none; b=Ay95dykhE6fPqA9kzPZIgJU4oBvx3/xZ3dAh42G8SbgUGHd3pm39Bo5YL7H1k+CuhPd3qKcV4EonQqruYjOxMKOiXejDAO37wsSqqMkeSEat/hckraurSoo3L66WM0MbY3xy4867SFyrBMwAf28pYF9raxoPk/lSbLp8YvYiIVU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777886349; c=relaxed/simple; bh=B9iom6SoBtIl4KxAXQi4NBPS5mHObXAidFBUUi9eiaw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=BUsQRutFmsWrfdEXhNe+g2aGq8guvtIXMHhKVrHTtVExk/BocE4IE6K1QLLD75/tHim94CmGc2oOdeUTYw1VeCKlRbOdyq7W8aMKtIm5UJaHTSZZ5mn43nQnB4RihAyTBXzNP0w4NmquUeARFawWAFkv63NFZBFbmC8puS/nlGY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sang-engineering.com; spf=pass smtp.mailfrom=sang-engineering.com; dkim=pass (2048-bit key) header.d=sang-engineering.com header.i=@sang-engineering.com header.b=ikGAZ4BR; arc=none smtp.client-ip=194.117.254.33 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sang-engineering.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sang-engineering.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sang-engineering.com header.i=@sang-engineering.com header.b="ikGAZ4BR" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= sang-engineering.com; h=date:from:to:cc:subject:message-id :references:mime-version:content-type:in-reply-to; s=k1; bh=B9io m6SoBtIl4KxAXQi4NBPS5mHObXAidFBUUi9eiaw=; b=ikGAZ4BRLlXcusrljtCq ZUzhjqsTbHXGuqiMjjQvntHR3fPwQHdvQGLsc7hdn2jgNugYRcqCYCTNB7UaR3I8 ftPaAfDzT6Fr+8eZBrfR1aykgwqNfxRVvlNNI/PFuyjxu1jVZstpSHGST0ZLkGvD TQaL/npMegelSbV/ucaS68anDW2h5m6POCOhQD7Pgl3pD6CHSHuW2csi6HNEiWRE OJNVV+BqugbXKQx+w4BZ0pD+bMlKAeam7bq07Hcow2XGvRVyOoYbe72k5vMHDZoF TdZ+iVBUV/hG9XjDGIuZGfgsLRDYLYrIAs1WHoLzxMwtI1DGGOnaZwM4PbEdkrBB 1Q== Received: (qmail 2122993 invoked from network); 4 May 2026 11:19:04 +0200 Received: by mail.zeus03.de with UTF8SMTPSA (TLS_AES_256_GCM_SHA384 encrypted, authenticated); 4 May 2026 11:19:04 +0200 X-UD-Smtp-Session: l3s3148p1@1DoGbPpQPJ4ujnvR Date: Mon, 4 May 2026 11:19:04 +0200 From: Wolfram Sang To: Niels Franke Cc: westeri@kernel.org, linux-i2c@vger.kernel.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] i2c: acpi: Add ELAN0678 to i2c_acpi_force_100khz_device_ids Message-ID: References: <20260418053719.15766-1-nielsfranke@gmail.com> Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="oKyoE85Wsy/3DTOf" Content-Disposition: inline In-Reply-To: <20260418053719.15766-1-nielsfranke@gmail.com> --oKyoE85Wsy/3DTOf Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Apr 18, 2026 at 07:37:19AM +0200, Niels Franke wrote: > The ELAN0678 touchpad (04F3:3195) found in the Lenovo ThinkPad X13 > exhibits excessive smoothing when the I2C bus runs at 400KHz, making > the touchpad feel sluggish when plugged into AC power. This is the > same issue previously fixed for ELAN06FA. >=20 > The device's ACPI table (Lenovo TP-R22) specifies 0x00061A80 (400KHz) > for the I2cSerialBusV2 descriptor. Forcing the bus to 100KHz eliminates > the sluggish behavior. >=20 > Signed-off-by: Niels Franke Kept the sorting (alphanumeric) and applied to for-current, thanks! --oKyoE85Wsy/3DTOf Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAmn4ZIgACgkQFA3kzBSg KbY/iw//Q3MTxv0uoed9meVZMOoorKDntUhkTEsHs4nqKCkAg1nd/eTGT7BIRdS7 9slZckra+FUkf64J5XxTvXW2rmX+pWHNxuk9W1POcOWPaTFrR9qjdB8grosviAAe Jv+Lvq1SrSio0sYWUX8zbXC9+aLz0FSKSZFkVGvIo8MoeSCNj90x0fqx10ibMems Xm7Dy0w2NeVqX10rJG+PdEofNLj7vme4lElw0MCtHAUI/vyzKT2uRNFUklyDuFvA 1X+dNQZCddRNc13nuDHPv6QxZwyDbezi1oHi8lJg7HlYBdfiPwgCYC0Nx2vrkVyj Ccm/Fk/aLeGJ2dx1ePhTZhL/CIU/fIVL1+WyH9GrMo/VSVN5MX9HdKGmViN82CGY FRLAij+dZcJ3wqmr218vlmWin3/x8P/OeIPYzX70QticQfs+D4oyMV2y1JgGs10Z RIiW/VDISr08qvOSXycukIB1vMfFbDHcvdsP0mkGR8bjNE6GR2CGIZKU9JBk19g9 3TUCefJkY3oLvHxy9dnfKwCU2Q4zlh6MSjbcTeRSeSr3ZQ114Boe9WOx3PZyzoSP S+5N394XLF7wjzXtgFWkHTntPniLMTbYXuINco8jO66eDP9uSq2e5QHNZ1jSYHYi Gr9dZg99QumBk+HGdZmRNz3fRgpl2beYCoNDqJDskV/6qL2BtJw= =BDC4 -----END PGP SIGNATURE----- --oKyoE85Wsy/3DTOf--