From nobody Sun Oct 5 14:31:48 2025 Received: from out28-63.mail.aliyun.com (out28-63.mail.aliyun.com [115.124.28.63]) (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 67F872BAF7; Sat, 2 Aug 2025 23:16:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=115.124.28.63 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754176581; cv=none; b=MMQwv4qRxxig2qtsMXxl+bdXJOv1jumoviQIHcB45k2xXl92ZfP5SZolCmFxBirseJTai5uu7OS3Wbn4dTgBr8Qe4H3UIOCG4A/K8sbJJyVpJYrVJpCRnSrIVg2S7wE6iBgqWAEiH1SmtFEpy2w/WdsYpOQ0FDH15QApnOfbzIs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754176581; c=relaxed/simple; bh=HCclWy8DKnHGYD/vBeYYhYHKVZ4J0XsnSgLnWfrRbPw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=rhso+zIIImLrJRYo8UL2W1dXFUpB4en6oK8WtWqhdT4D1phQp+ll9Bq/trNmu5ENan227dgxw5aC5OwFWG/r295+z5JS9VihX6z0zQwXdxRMb+eQQKDq3Lo+XIeC/giYxCTjBPMv96/Uv7FifAEQbvUkETpfQZqQ9JvPRza6HIg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=myth5.com; spf=pass smtp.mailfrom=myth5.com; arc=none smtp.client-ip=115.124.28.63 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=myth5.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=myth5.com Received: from precision-5560..(mailfrom:myth5@myth5.com fp:SMTPD_---.e4WzbAK_1754176557 cluster:ay29) by smtp.aliyun-inc.com; Sun, 03 Aug 2025 07:16:03 +0800 From: "fangzhong.zhou" To: wsa+renesas@sang-engineering.com Cc: linux-acpi@vger.kernel.org, linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, myth5@myth5.com, westeri@kernel.org Subject: [PATCH v1] i2c: Force DLL0945 touchpad i2c freq to 100khz Date: Sun, 3 Aug 2025 07:15:54 +0800 Message-ID: <20250802231554.9920-1-myth5@myth5.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250801145405.11445-1-myth5@myth5.com> References: <20250801145405.11445-1-myth5@myth5.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" This patch fixes an issue where the touchpad cursor movement becomes slow on the Dell Precision 5560. Force the touchpad freq to 100khz as a workaround. Tested on Dell Precision 5560 with 6.14 to 6.14.6. Cursor movement is now smooth and responsive. Changes in v1: - No code changes from first commit. Signed-off-by: fangzhong.zhou --- 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 d2499f302..5b424637b 100644 --- a/drivers/i2c/i2c-core-acpi.c +++ b/drivers/i2c/i2c-core-acpi.c @@ -371,6 +371,7 @@ static const struct acpi_device_id i2c_acpi_force_100kh= z_device_ids[] =3D { * a 400KHz frequency. The root cause of the issue is not known. */ { "ELAN06FA", 0 }, + { "DLL0945", 0 }, {} }; =20 --=20 2.48.1