[JasperLake] Lenovo Flex 3i 15 (Beetley) - Touchscreen not working on some units

Back in October - N4000 non-working Win11 cbmem logs from coreboot 4.21 were compared with working ChromeOS dmsg logs and @WeirdTreeThing identified
HID input: GTCH7503:00 device as the touchscreen working on ChromeOS.
On Win11 - device manager appears to see device - but touch screen function missing (even with proper drivers installed)

on another unit Blipper/Beetly (N6000) with no Issues – the device was identified as

Not sure if this is a Coreboot issue or a not supported Driver issue on Win11

Mine does this too, phaser360

It’s possible increasing reset_delay_ms in coreboot may fix it. May want to ask @MrChromebox for a ROM with it adjusted on GTCH7503

Does it work under Linux?

Touchscreen does not work on Win or Fedora- only ChromeOS (when reverted back to stock)

please provide cbmem logs and dmesg logs for both working and non-working cases

ok, ChromeOS says you have a G2 touchscreen:

[ 0.969015] input: GTCH7503:00 2A94:A822 as /devices/pci0000:00/0000:00:15.2/i2c_designware.1/i2c-12/i2c-GTCH7503:00/0018:2A94:A822.0001/input/input5

My firmware also detects this:

[INFO ] \_SB.PCI0.I2C2.H040: G2 Touchscreen at I2C: 00:40

so I’m at a bit of a loss as to why it wouldn’t work under Linux/Windows, unless the delays between power states need some tweaking. Other DEDEDE boards use the same touchscreen with slightly different delays, we can try using those instead

sure im willing to try

Same issue on mine also.