linux-kernel - [PATCH] platform/x86: dell-lis3lv02d: Add Precision 3551

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Message-ID: <20250710190919.37842-1-kernel@aiyionpri.me>
Date: Thu, 10 Jul 2025 21:09:19 +0200
From: Jan-Niklas Burfeind <kernel@...ionpri.me>
To: linux-kernel@...r.kernel.org
Cc: platform-driver-x86@...r.kernel.org,
	Hans de Goede <hansg@...nel.org>,
	Paul Menzel <pmenzel@...gen.mpg.de>,
	Jan-Niklas Burfeind <kernel@...ionpri.me>
Subject: [PATCH] platform/x86: dell-lis3lv02d: Add Precision 3551

This marks 0x29 as accelerometer address on Dell Precision 3551.

I followed previous works of Paul Menzel and Hans de Goede to verify it:

$ cd /sys/bus/pci/drivers/i801_smbus/0000\:00\:1f.4

$ ls -d i2c-?
i2c-0

$ sudo modprobe i2c-dev

$ sudo i2cdetect 0
WARNING! This program can confuse your I2C bus, cause data loss and worse!
I will probe file /dev/i2c-0.
I will probe address range 0x08-0x77.
Continue? [Y/n] Y
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:                         08 -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- 29 -- -- -- -- -- --
30: 30 -- -- -- -- 35 UU UU -- -- -- -- -- -- -- --
40: -- -- -- -- 44 -- -- -- -- -- -- -- -- -- -- --
50: UU -- 52 -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --

$ echo lis3lv02d 0x29 > sudo tee /sys/bus/i2c/devices/i2c-0/new_device
lis3lv02d 0x29

$ sudo dmesg
[    0.000000] Linux version 6.12.28 (nixbld@...alhost) (gcc (GCC) 14.2.1 20250322, GNU ld (GNU Binutils) 2.44) #1-NixOS SMP PREEMPT_DYNAMIC Fri May  9 07:50:53 UTC 2025
[...]
[    0.000000] DMI: Dell Inc. Precision 3551/07YHW8, BIOS 1.18.0 10/03/2022
[...]
[ 3749.077624] lis3lv02d_i2c 0-0029: supply Vdd not found, using dummy regulator
[ 3749.077732] lis3lv02d_i2c 0-0029: supply Vdd_IO not found, using dummy regulator
[ 3749.098674] lis3lv02d: 8 bits 3DC sensor found
[ 3749.182480] input: ST LIS3LV02DL Accelerometer as /devices/platform/lis3lv02d/input/input28
[ 3749.182899] i2c i2c-0: new_device: Instantiated device lis3lv02d at 0x29

Signed-off-by: Jan-Niklas Burfeind <kernel@...ionpri.me>
---
 drivers/platform/x86/dell/dell-lis3lv02d.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/platform/x86/dell/dell-lis3lv02d.c b/drivers/platform/x86/dell/dell-lis3lv02d.c
index 0791118dd6b7..732de5f556f8 100644
--- a/drivers/platform/x86/dell/dell-lis3lv02d.c
+++ b/drivers/platform/x86/dell/dell-lis3lv02d.c
@@ -49,6 +49,7 @@ static const struct dmi_system_id lis3lv02d_devices[] __initconst = {
 	DELL_LIS3LV02D_DMI_ENTRY("Latitude E6330",     0x29),
 	DELL_LIS3LV02D_DMI_ENTRY("Latitude E6430",     0x29),
 	DELL_LIS3LV02D_DMI_ENTRY("Precision 3540",     0x29),
+	DELL_LIS3LV02D_DMI_ENTRY("Precision 3551",     0x29),
 	DELL_LIS3LV02D_DMI_ENTRY("Precision M6800",    0x29),
 	DELL_LIS3LV02D_DMI_ENTRY("Vostro V131",        0x1d),
 	DELL_LIS3LV02D_DMI_ENTRY("Vostro 5568",        0x29),
-- 
2.49.0