Re: [PATCH v3 1/2] dt-bindings: iio: temperature: Add NXP P3T175x support

Conor Dooley
2025-09-29T17:33:51Z

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On Mon, Sep 29, 2025 at 03:15:42PM +0530, Lakshay Piplani wrote:
> Add bindings for the NXP P3T175x (P3T1750/P3T1755) temperature
> sensor, supporting both I2C & I3C interfaces.

Can you please mention here what the difference between devices is?

>
> Signed-off-by: Lakshay Piplani <lakshay.piplani@nxp.com>
> ---
> V2 -> V3: Changes since V2:
> - Removed nxp,interrupt-mode and nxp,fault-queue properties from DT binding
> - Updated compatible strings:
> - nxp,p3t1750-iio → nxp,p3t1750dp
> - nxp,p3t1755-iio → nxp,p3t1755dp
> V1 -> V2: Changes since V1:
> - Dropped nxp,alert-active-high
> - Fixed YAML formatting, line wrapping, and examples
>
> .../bindings/iio/temperature/nxp,p3t1755.yaml | 62 +++++++++++++++++++
> 1 file changed, 62 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/iio/temperature/nxp,p3t1755.yaml
>
> diff --git a/Documentation/devicetree/bindings/iio/temperature/nxp,p3t1755.yaml b/Documentation/devicetree/bindings/iio/temperature/nxp,p3t1755.yaml
> new file mode 100644
> index 000000000000..16a01fa81251
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/temperature/nxp,p3t1755.yaml
> @@ -0,0 +1,62 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/temperature/nxp,p3t1755.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: NXP P3T175xDP Temperature Sensor
> +
> +maintainers:
> + - Lakshay Piplani <lakshay.piplani@nxp.com>
> +
> +description: |
> + Datasheet: https://www.nxp.com/docs/en/data-sheet/P3T1755.pdf
> +
> + P3T175xDP (P3T1750/P3T1755) is a digital temperature sensor with a range of
> + -40°C to +125°C and a 12-bit resolution. It supports communication over both
> + I2C and I3C interfaces.
> +
> + The I2C interface supports up to 32 static addresses and provides an ALERT
> + output to signal when temperature thresholds are crossed.
> +
> + The I3C interface supports In-Band interrupts (IBI) in interrupt mode,
> + allowing the device to notify the controller of threshold events without
> + dedicated alert pin.
> +
> +properties:
> + compatible:
> + enum:
> + - nxp,p3t1750dp
> + - nxp,p3t1755dp
> +
> + interrupts:
> + maxItems: 1
> +
> + reg:
> + maxItems: 1
> + description: |
> + In I2C mode, the device supports up to 32 static addresses.
> + In I3C mode, the 'reg' property encodes a triplet of
> + <static-address BCR PID> used for device matching.
> + Static address is optional if matching is done via PID.
> +
> +required:
> + - compatible
> + - reg
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/interrupt-controller/irq.h>
> + i2c {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + temp-sensor@48 {
> + compatible = "nxp,p3t1755dp";
> + reg = <0x48>;
> + interrupt-parent = <&gpio2>;
> + interrupts = <3 IRQ_TYPE_EDGE_FALLING>;
> + };
> + };
> --
> 2.25.1
>

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