Re: [PATCH RFC] arm64: dts: qcom: nord: add ADC-TM thermistor channels for Nord PMICs

[Shawn Guo]

On Mon, Nov 02, 2026 at 12:54:37PM +0100, Konrad Dybcio wrote:
> On 10/28/26 4:01 PM, Shawn Guo wrote:
> > From: Dhruvin Rajpura <dhruvin.rajpura@xxxxxxxxxxxxxxxx>
> > 
> > PMAU0102 (Kai_MV) and PMM8650AU's Kobra_MM ADC5 Gen3 controllers only
> > expose REF_GND/1P25VREF/DIE_TEMP calibration channels; none of their
> > AMUX thermistor pins are wired up, so none of the board thermistor
> > rails feed the thermal framework.
> > 
> > Only 3 AMUX pins are actually wired to thermistors on Nord, all on
> > Kai and none on Kobra: Kai instance E's AMUX1 (SDRAM3 THERM) and Kai
> > instance I's AMUX1/AMUX2 (SDRAM1 THERM, UFS THERM). Kai's other AMUX
> > pins are either DO_NOT_USE or wired to voltage-rail monitors, not
> > thermistors, so add only these 3 channels.
> 
> These thermistors seem to concern board-side thermistors, not
> channels coming straight from the PMIC, so these additional
> thermistors belong in the board DT

Indeed! The AMUX wiring is board specific. I will send v2 to keep only
#thermal-sensor-cells in pmau0102-nord.dtsi (for all Kai ADC instances,
as it is a PMIC capability), and move the thermistor channels and thermal
zones into the board DTS.

Thanks for the review, Konrad!

Shawn