On 2/20/26 10:19 AM, Luca Weiss wrote: > Add a generic-adc-thermal node to convert the voltage read by the > battery temperature ADC into degree Celsius using the provided lookup > table. > > This will later be used as input for the fuel gauge node (QGauge on the > PM7250B). > > Signed-off-by: Luca Weiss <[email protected]> > --- > arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts | 83 > +++++++++++++++++++++++ > 1 file changed, 83 insertions(+) > > diff --git a/arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts > b/arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts > index b697051a0aaa..7857003099a6 100644 > --- a/arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts > +++ b/arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts > @@ -108,6 +108,89 @@ rear_cam_sensor: thermal-sensor-rear-cam { > io-channel-names = "sensor-channel"; > }; > > + bat_therm_sensor: thermal-sensor-bat-therm {
nit: this should be a little higher > + compatible = "generic-adc-thermal"; > + #thermal-sensor-cells = <0>; > + #io-channel-cells = <0>; > + io-channels = <&pm7250b_adc ADC5_BAT_THERM_30K_PU>; > + io-channel-names = "sensor-channel"; > + /* > + * Voltage to temperature table for 10kΩ (B=3435K) NTC with a > + * 1.875V reference and 30kΩ pull-up. > + */ I think this looks good. Is this data going to be correct for all/most devices (i.e. is there a single battery sku)? Konrad
