On other machines, there is serial bus controller (i2c controller), but
your machine doesn't have it, maybe you could enable it in the BIOS
setting? You could find the I2C controller with lspci as below:
00:15.0 Serial bus controller [0c80]: Intel Corporation Tiger Lake-LP Serial IO
I2C Controller #0 [8086:a0e8] (rev 20)
DeviceName: Onboard - Other
Subsystem: Device [1e39:a025]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 27
Region 0: Memory at 4017000000 (64-bit, non-prefetchable) [virtual]
[size=4K]
Capabilities: <access denied>
Kernel driver in use: intel-lpss
Kernel modules: intel_lpss_pci
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https://bugs.launchpad.net/bugs/1943368
Title:
Touchpad not recognised
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