[PATCH v3 1/2] dt-bindings: thermal: imx: Document calibration offset property

[Conor Dooley]

On Fri, Jul 10, 2026 at 10:50:40AM +0800, HaoNing Cheng via B4 Relay wrote:
> From: HaoNing Cheng <Haoning.CHENG at cn.bosch.com>
> 
> Some boards need a small per-design correction to align the reported CPU
> temperature with board-level measurements.
> 
> Document the optional fsl,temp-calibration-offset-millicelsius property,
> a signed offset in millicelsius that is added to the calculated sensor
> temperature. The property is optional and the existing behaviour is kept
> when it is omitted.
> 
> Update the binding example to show its usage.
> 
> Signed-off-by: HaoNing Cheng <Haoning.CHENG at cn.bosch.com>

Acked-by: Conor Dooley <conor.dooley at microchip.com>
pw-bot: not-applicable

> ---
>  Documentation/devicetree/bindings/thermal/imx-thermal.yaml | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/thermal/imx-thermal.yaml b/Documentation/devicetree/bindings/thermal/imx-thermal.yaml
> index 949b154856c5..704bf2fa48cf 100644
> --- a/Documentation/devicetree/bindings/thermal/imx-thermal.yaml
> +++ b/Documentation/devicetree/bindings/thermal/imx-thermal.yaml
> @@ -59,6 +59,15 @@ properties:
>    clocks:
>      maxItems: 1
>  
> +  fsl,temp-calibration-offset-millicelsius:
> +    maxItems: 1
> +    description:
> +      A signed calibration offset, in millicelsius, added to the calculated
> +      sensor temperature to compensate for board-level measurement
> +      differences. When absent, no offset is applied.
> +    minimum: -28580
> +    maximum: 28580
> +
>    "#thermal-sensor-cells":
>      const: 0
>  
> @@ -109,6 +118,7 @@ examples:
>              nvmem-cells = <&tempmon_calib>, <&tempmon_temp_grade>;
>              nvmem-cell-names = "calib", "temp_grade";
>              clocks = <&clks IMX6SX_CLK_PLL3_USB_OTG>;
> +            fsl,temp-calibration-offset-millicelsius = <(-6400)>;
>              #thermal-sensor-cells = <0>;
>          };
>      };
> 
> -- 
> 2.43.0
> 
> 
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