From: "fangzhong.zhou" <myth5@myth5.com>
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 [thread overview]
Message-ID: <20250802231554.9920-1-myth5@myth5.com> (raw)
In-Reply-To: <20250801145405.11445-1-myth5@myth5.com>
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 <myth5@myth5.com>
---
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_100khz_device_ids[] = {
* a 400KHz frequency. The root cause of the issue is not known.
*/
{ "ELAN06FA", 0 },
+ { "DLL0945", 0 },
{}
};
--
2.48.1
next prev parent reply other threads:[~2025-08-02 23:16 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-20 5:28 [PATCH] " fangzhong.zhou
2025-07-28 8:59 ` Wolfram Sang
2025-08-01 14:54 ` fangzhong.zhou
2025-08-02 23:15 ` fangzhong.zhou [this message]
2025-08-03 20:39 ` [PATCH v1] " Wolfram Sang
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