linux-kernel - Re: [PATCH] i2c: Force DLL0945 touchpad i2c freq to 100khz

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Message-ID: <20250801145405.11445-1-myth5@myth5.com>
Date: Fri,  1 Aug 2025 22:54:05 +0800
From: "fangzhong.zhou" <myth5@...h5.com>
To: wsa+renesas@...g-engineering.com
Cc: linux-acpi@...r.kernel.org,
	linux-i2c@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	myth5@...h5.com,
	westeri@...nel.org
Subject: Re: [PATCH] i2c: Force DLL0945 touchpad i2c freq to 100khz

On Mon, Jul 28, 2025 at 10:59 AM +0200, Wolfram Sang wrote:
>Please add a commit message indicating on which laptop you encountered
>the issue, what happened before and after the fix.

Ok, thanks for tell me. This issue happened in the dell precision 5560.
When the issue happens, the cursor movements become shorter, 
meaning that to the same input swipe, the traveled distance of the 
cursor is like half of the expected one.
It's also really hard to make precise movements. But if apply this 
patch, the touchpad still work well and have expected precise movements