Re: Problems with latest prototype

Am Mon, 15 Oct 2018 16:16:23 +0200 hat "H. Nikolaus Schaller" hns@goldelico.com geschrieben:

Hi,

...

Isn't the voltage for the PWM stabilized by the PALMAS as well?

No, it is the VSYS input voltage for efficiency reasons. If we would provide some Palmas voltage to the display inverter, we would loose 5-10% energy.

Ah, I see. That makes sense.

...

In your U-Boot? I don't think we've got it implemented in our U-Boot yet.

No, in kernel. U-Boot does no detection at all, except checking for battery presence. So as long as you run in U-Boot console mode there is only the automatic charging detection/handling of the bq24297.

Which kernel version? Already in 4.18 or only in 4.19?