Re: [PATCH RFC] arm64: dts: qcom: nord: add ADC-TM thermistor channels for Nord PMICs
From: Bartosz Golaszewski
Date: Fri Oct 30 2026 - 05:28:48 EST
On Wed, Oct 28, 2026 at 11:01:03PM +0800, 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.
>
> Add #thermal-sensor-cells = <1> to the two Kai adc@ nodes that gain
> a channel, the new AMUX1[/AMUX2]_THM channel(s) with qcom,adc-tm,
> and a per-channel thermal-zone for each, following the existing
> Gen3/Gen4 board pattern of a direct thermal-sensors phandle into the
> ADC channel.
>
> Signed-off-by: Dhruvin Rajpura <dhruvin.rajpura@xxxxxxxxxxxxxxxx>
> Signed-off-by: Shawn Guo <shengchao.guo@xxxxxxxxxxxxxxxx>
> ---
...
> +
> pmau0102_f_thermal: pmau0102-f-thermal {
> polling-delay-passive = <100>;
> thermal-sensors = <&pmau0102_f_mbg_temp>;
> @@ -501,6 +545,42 @@ trip0 {
> };
> };
>
> + pmau0102_i_sdram1_thermal: pm-i-sdram1-thermal {
Existing thermal zone nodes use the "pmau0102" prefix.
With that:
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxxxxxxxx>