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

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Message-ID: <20250929-panther-providing-d69e6016acc9@spud>
Date: Mon, 29 Sep 2025 18:33:45 +0100
From: Conor Dooley <conor@...nel.org>
To: Lakshay Piplani <lakshay.piplani@....com>
Cc: linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org,
	jic23@...nel.org, dlechner@...libre.com, nuno.sa@...log.com,
	andy@...nel.org, marcelo.schmitt1@...il.com,
	gregkh@...uxfoundation.org, viro@...iv.linux.org.uk,
	peterz@...radead.org, jstephan@...libre.com, robh@...nel.org,
	krzk+dt@...nel.org, conor+dt@...nel.org, devicetree@...r.kernel.org,
	jonathan.cameron@...wei.com, vikash.bansal@....com,
	priyanka.jain@....com, shashank.rebbapragada@....com
Subject: Re: [PATCH v3 1/2] dt-bindings: iio: temperature: Add NXP P3T175x
 support

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@....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@....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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