Furquan Shaikh has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/35158 )
Change subject: mb/google/hatch/var/helios: Increase touchscreen reset delay to 120ms ......................................................................
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Would be nice if we had a way to control the report_en pin timing as well (requires >10ms after reset), GPP_H14.
Is that 120ms + 10ms after reset deasserted?
No, 10ms after reset deassertion it is valid to set report_en. I don't see that pin exported in the device, so it must be up to the BIOS right now. We leave it high in gpio.c right now. Philip posted the datasheet in the bug for this. If it still "works," then I don't know if that pin is actually critical to the power on sequence or not.
There is a stop_gpio that you can potentially use for it.