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SubjectRe: [PATCH v2] i2c: i801: Register optional lis3lv02d i2c device on Dell machines
> Dell platform team told us that some (DMI whitelisted) Dell Latitude
> machines have ST microelectronics accelerometer at i2c address 0x29.
> Presence of that ST microelectronics accelerometer is verified by existence
> of SMO88xx ACPI device which represent that accelerometer. Unfortunately
> ACPI device does not specify i2c address.
> This patch registers lis3lv02d device for selected Dell Latitude machines
> at i2c address 0x29 after detection. And for Dell Vostro V131 machine at
> i2c address 0x1d which was manually detected.
> Finally commit a7ae81952cda ("i2c: i801: Allow ACPI SystemIO OpRegion to
> conflict with PCI BAR") allowed to use i2c-i801 driver on Dell machines so
> lis3lv02d correctly initialize accelerometer.
> Tested on Dell Latitude E6440.
> Signed-off-by: Pali Rohár <>
> ---
> Changes since v1:
> * Added Dell Vostro V131 based on Michał Kępień testing

I tested this patch on a Vostro V131 and it seems to work as expected:
"lis3lv02d: 8 bits sensor found" is logged during boot, an input device
gets registered and its axis values seem to be consistent with laptop's

Tested-by: Michał Kępień <>

I did not review the contents of the patch this time, sorry.

Best regards,
Michał Kępień

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