Re: [PATCH] i2c: acpi: Add VEN_04F3 to i2c_acpi_force_100khz_device_ids

[Mika Westerberg]

Hi,

On Tue, May 19, 2026 at 01:24:24AM -0400, Jacob Bazata wrote:
> 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 <jacobbazata@xxxxxxxxx>
> ---
>  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 },

This is interesting ACPI ID. Adding Andy just in case he has any comments
on it.

I'm fine with this.

>  	{}
>  };
>  
> -- 
> 2.54.0