power_supply: max77693: Make min/max charging current limit configurable

Adds two new properties, "maxim,min-charge-microamps" and "maxim,max-charge-microamps", that control the minimum/maximum current allowed for charging. By default, use the default min/max values for 0.5A (500000 uA).

Also make the Galaxy Tab 3 8.0 use those values.

(Note that this does not update dt-bindings to include the new values; if I should add that too, let me know.)

I think you should set the standard properties regulator-min-microamp / regulator-max-microamp to the regulator node instead.

Wouldn't that be overwritten by the regulator_set_current_limit call in the driver?

Checked the code:

regulator-min/max-microamp set the constraints (see [1]), which are checked when calling regulator_set_current_limit, see [2] [3]. So changing these values will only constrain the values passed to set_current_limit.

Unless you mean that the charger driver should read those constraints and use them for the charging limit configuration, which I suppose probably makes more sense than the approach I tried.

mentioned in merge request !15 (closed)

closed

Closing in favor of !15 (closed).