Connect one of the TP pins to a GPIO
We are trying to get the TE (tearing effect) pin of the LCD controller connected to the one of the (otherwise unused) TP pins of the FPCB. We can use this to synchronize to the refresh of the panel.
We have one pin left: PMIC_GPIO but that only goes to the PMIC and then via I2C to the controller. I'm not sure if that will be fast enough (maybe via the interrupt).
Proposed solution:
- Add 0 Ohm resistors to both TP pins (we don't know which one will be connected ATM)
- Connect the PMIC_GPIO after the 0 Ohms
- Connect a 1M resistor to one of the SAO GPIO pins after the 0 Ohms