nPM1300 Configuration

[levijo]

Hi,

I would like your support in reviewing and helping define the correct configuration for the NPM1300 charger in our application.

Here is the current configuration we are using:

npm1300_charger: charger {
    compatible = "nordic,npm1300-charger";
    status = "okay";
    term-microvolt = <4100000>;
    term-warm-microvolt = <4000000>;
    current-microamp = <130000>;
    dischg-limit-microamp = <1340000>;
    vbus-limit-microamp = <500000>;
    thermistor-ohms = <10000>;
    thermistor-beta = <3435>;
    charging-enable;
};

We are using the following battery: renata ICP621333PA-01 3.7V / 230mAh

Could you please confirm whether this configuration is appropriate for the battery in use? I noticed that the PMIC offers additional protection and safety configurations. If possible, I would appreciate your guidance on defining a recommended and more complete set of parameters.

We are also encountering a couple of issues:

1. Occasionally, the PMIC does not detect the USB-C charger connection during boot.

2. When the USB connection is not recognized, the fuel gauge reports 0% state of charge (SOC).

Any advice or suggestions to address these issues would be greatly appreciated.