On Thu, Dec 6, 2018 at 3:56 AM Jagan Teki [off-list ref] wrote:

On Mon, Dec 3, 2018 at 4:11 PM Chen-Yu Tsai [off-list ref] wrote:

quoted

On Mon, Dec 3, 2018 at 6:16 PM Jagan Teki [off-list ref] wrote:

quoted

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?

Yeah. That's better. It's always best to be precise with hardware
descriptions. If you simplify it, the reason should be given in
detail. And it should be a good one.

ChenYu