On Mon, Dec 3, 2018 at 4:11 PM Chen-Yu Tsai <wens@xxxxxxxx> wrote: > > On Mon, Dec 3, 2018 at 6:16 PM Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx> wrote: > > > > vcc-supply property is need for some Goodix CTP controller like GT5663 > > where 3.3V external pull-up regulator connected via controller VCC pin. > > "External pull-up regulator" sounds fishy. Chips have power supply > pins, either combined, or separate rails for analog, digital, and I/O. > For Goodix chips these are AVDD28, AVDD22, DVDD12, amd VDDIO. The name > and description you provide match none of these. We have vcc pin in the connector to supply vcc-ctp, but indeed it is AVDD28 supply as per the reference schematic design[1] Page 23. Host interface has AVDD pin which is connected to ADVDD28 on goodix chip, so I can name this as avdd28-supply. is that OK? [1] https://www.crystalfontz.com/controllers/GOODIX/GT5663/459/
