[PATCH v4 2/5] power: supply: add support for max77759 fuel gauge

[André Draszik]

Hi,

On Mon, 2025-07-07 at 08:16 +0100, Peter Griffin wrote:
> Hi Thomas,
> 
> On Tue, 24 Jun 2025 at 16:45, Thomas Antoine <t.antoine at uclouvain.be> wrote:
> 
> > I am unsure about what to do about this initalization, especially for values
> > which slightly differ from the devicetree. I think for next version, I
> > will have the same parameters be passed in the devicetree like android.
> 
> We don't really pass register values like the downstream driver is
> doing in the device tree. I think you will likely need to add a
> max77759-gs101-oriole compatible to the driver and then have the
> application specific values, and m5 gauge model algorithm as static
> info in the driver applied from the dedicated compatible. It would
> also be worth checking whether any more of those register values can
> be represented by the standard power-supply binding properties that
> already exist.

I believe these are likely battery specific values, and were obtained during
battery characterization by the vendor (or Maxim). They can change (with a
different battery supplier etc, hence I don't think basing this on a
max77759-gs101-oriole would be correct here.

As we learned from the Pixel 6a battery updates, the same phone may use
batteries (e.g. from different suppliers).

Either it needs to know about the specific battery model, or the values
should be passed from DT in some way.

Cheers,
Andre'