Re: [PATCH 03/13] dt-bindings: thermal: add mt6323 PMIC thermal

Rob Herring
2026-05-05T14:05:23Z

On Mon, May 04, 2026 at 09:24:55PM +0300, Roman Vivchar wrote:
> The MediaTek mt6323 PMIC temperature can be read using AUXADC channel.
>
> Add the devicetree binding documentation for the MediaTek mt6323 thermal.
> Due similarities with newer PMICs like mt6358, which include more than
> one thermal sensor, the #thermal-sensor-cells should be set to 1, to
> avoid breaking devicetree ABI in future.
>
> Tested-by: Ben Grisdale <bengris32@protonmail.ch> # Amazon Echo Dot (2nd Generation)
> Signed-off-by: Roman Vivchar <rva333@protonmail.com>
> ---
> .../bindings/thermal/mediatek,mt6323-thermal.yaml | 63 ++++++++++++++++++++++
> 1 file changed, 63 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/thermal/mediatek,mt6323-thermal.yaml b/Documentation/devicetree/bindings/thermal/mediatek,mt6323-thermal.yaml
> new file mode 100644
> index 000000000000..1882816ba274
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/thermal/mediatek,mt6323-thermal.yaml
> @@ -0,0 +1,63 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/thermal/mediatek,mt6323-thermal.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: MediaTek PMIC thermal
> +
> +maintainers:
> + - Roman Vivchar <rva333@protonmail.com>
> +
> +description:
> + The MediaTek PMIC thermal sensor uses an AUXADC channel to read raw
> + temperature data and applies calibration data from NVMEM.
> +
> +allOf:
> + - $ref: thermal-sensor.yaml#
> +
> +properties:
> + compatible:
> + const: mediatek,mt6323-thermal
> +
> + io-channels:
> + description: >

Don't need '>'.

> + IIO channel for the AUXADC to read raw data from.
> + maxItems: 1
> +
> + io-channel-names:
> + const: vts

-names properties are pointless for a single entry.

> +
> + nvmem-cells:
> + description: >
> + NVMEM cell with phandle to the calibration data provided by the
> + NVMEM device. If unspecified default values will be used.

Drop. Don't need generic descriptions.

> + maxItems: 1
> +
> + nvmem-cell-names:
> + const: calibration-data
> +
> + "#thermal-sensor-cells":
> + const: 1
> +
> +required:
> + - compatible
> + - io-channels
> + - io-channel-names
> + - "#thermal-sensor-cells"
> +
> +unevaluatedProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/iio/adc/mediatek,mt6323-auxadc.h>
> +
> + mt6323_thermal: thermal {

Drop unused labels.

> + compatible = "mediatek,mt6323-thermal";
> + nvmem-cells = <&mt6323_thermal_calibration_data>;
> + nvmem-cell-names = "calibration-data";
> +
> + io-channels = <&mt6323_adc MT6323_AUXADC_CHIP_TEMP>;
> + io-channel-names = "vts";
> + #thermal-sensor-cells = <1>;
> + };
>
> --
> 2.53.0
>