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[69.113.139.205]) by smtp.gmail.com with ESMTPSA id af79cd13be357-910ba463814sm1708612785a.5.2026.05.18.22.11.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 18 May 2026 22:11:00 -0700 (PDT) From: Jacob Bazata To: wsa+renesas@sang-engineering.com, westeri@kernel.org Cc: linux-i2c@vger.kernel.org, linux-acpi@vger.kernel.org, inux-kernel@vger.kernel.org, Jacob Bazata Subject: [PATCH] i2c: acpi: Add VEN_04F3 to i2c_acpi_force_100khz_device_ids Date: Tue, 19 May 2026 01:10:31 -0400 Message-ID: <20260519051031.6660-1-jacobbazata@gmail.com> X-Mailer: git-send-email 2.54.0 Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 }, {} }; -- 2.54.0