Observed on dmesg of my laptop I see the following
output:

[   19.898700] psmouse serio1: synaptics: queried max coordinates: x [..5678], y [..4694]
[   19.936057] psmouse serio1: synaptics: queried min coordinates: x [1266..], y [1162..]
[   19.936076] psmouse serio1: synaptics: Your touchpad (PNP: LEN0411 PNP0f13) says it can support a different bus. If i2c-hid and hid-rmi are not used, you might want to try setting psmouse.synaptics_intertouch to 1 and report this to linux-input@vger.kernel.org.
[   20.008901] psmouse serio1: synaptics: Touchpad model: 1, fw: 10.32, id: 0x1e2a1, caps: 0xf014a3/0x940300/0x12e800/0x500000, board id: 3471, fw id: 2909640
[   20.008925] psmouse serio1: synaptics: serio: Synaptics pass-through port at isa0060/serio1/input0
[   20.053344] input: SynPS/2 Synaptics TouchPad as /devices/platform/i8042/serio1/input/input7
[   20.397608] mousedev: PS/2 mouse device common for all mice

This patch will add its pnp id to the smbus list to
produce the setup of intertouch for the device.
Signed-off-by: José Pekkarinen <jose.pekkarinen@foxhound.fi>
Link: https://lore.kernel.org/r/20231114063607.71772-1-jose.pekkarinen@foxhound.fiSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>