linux-kernel - Re: [PATCH v2] dt-bindings: iio: gyroscope: invensense,itg3200: add binding

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Message-ID: <20250530175649.000005d0@huawei.com>
Date: Fri, 30 May 2025 17:56:49 +0100
From: Jonathan Cameron <Jonathan.Cameron@...wei.com>
To: Rodrigo Gobbi <rodrigo.gobbi.7@...il.com>
CC: <jic23@...nel.org>, <robh@...nel.org>, <krzk+dt@...nel.org>,
	<conor+dt@...nel.org>, <dlechner@...libre.com>, <nuno.sa@...log.com>,
	<andy@...nel.org>, <manuel.stahl@....fraunhofer.de>,
	<~lkcamp/patches@...ts.sr.ht>, <linux-iio@...r.kernel.org>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] dt-bindings: iio: gyroscope: invensense,itg3200: add
 binding

On Tue, 27 May 2025 17:55:28 -0300
Rodrigo Gobbi <rodrigo.gobbi.7@...il.com> wrote:

> There is no txt file for it, add yaml for invensense,itg3200 gyroscope.
> 
> Signed-off-by: Rodrigo Gobbi <rodrigo.gobbi.7@...il.com>
> ---
> Originally I`ve added @Jonathan as the binding maintainer due another thread
> but @Krzysztof mentioned at v1: "...this should be someone interested in the hardware".
> I`m not sure who might be this person in this case, a reasonable choice would be
> the original author of the driver, but looks like his last patch is from a
> long time ago [2] but I`ll ping here.
> 
> Dear @Manuel Stahl, I`ve noticed that since the driver was added,
> there was no binding doc for it and this is what this patch is addressing.
> In this case, a maintainer ref is required inside the .yaml file and I would
> like to ask if I can add you in this case. 
> I would appreciate your comment or suggestion over this topic.

Manuel has not been active for quite a while. You never know though!

Fall back to me if needed given I end up seeing all these changes anyway.

I can make that change whilst applying.

Jonathan

> 
> Tks all and regards.
> 
> Changelog:
> v2: 
>     - removed the register map link; there is no datasheet available at public ref. At [1],
>     it is just a product overview, so we can`t use it;
>     - add supplies and external clocks (I`ve used as ref iio/gyroscope/invensense,mpu3050.yaml);
>     - add the author of the driver as the maintainer of this file but I`m CC him in
>     order to get his opinion about it;
>     - adding some CC missing at v1;
> 
> v1: https://lore.kernel.org/linux-devicetree/20250515002817.81863-1-rodrigo.gobbi.7@gmail.com/
> 
> [1] https://invensense.tdk.com/products/motion-tracking/3-axis/itg-3200/
> [2] https://web.git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/?qt=author&q=Manuel+Stahl
> ---
>  .../iio/gyroscope/invensense,itg3200.yaml     | 59 +++++++++++++++++++
>  1 file changed, 59 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/gyroscope/invensense,itg3200.yaml
> 
> diff --git a/Documentation/devicetree/bindings/iio/gyroscope/invensense,itg3200.yaml b/Documentation/devicetree/bindings/iio/gyroscope/invensense,itg3200.yaml
> new file mode 100644
> index 000000000000..4b2f9a57c6ea
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/gyroscope/invensense,itg3200.yaml
> @@ -0,0 +1,59 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/gyroscope/invensense,itg3200.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Invensense ITG-3200 Gyroscope
> +
> +maintainers:
> +  - Manuel Stahl <manuel.stahl@....fraunhofer.de>
> +
> +description: |
> +  Triple-axis, digital output gyroscope with a three 16-bit analog-to-digital
> +  converters (ADCs) for digitizing the gyro outputs, a user-selectable internal
> +  low-pass filter bandwidth, and a Fast-Mode I2C.
> +
> +properties:
> +  compatible:
> +    const: invensense,itg3200
> +
> +  reg:
> +    maxItems: 1
> +
> +  vdd-supply: true
> +
> +  vlogic-supply: true
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  mount-matrix:
> +    description: an optional 3x3 mounting rotation matrix.
> +
> +  clocks:
> +    maxItems: 1
> +
> +  clock-names:
> +    items:
> +      - const: ext_clock
> +
> +required:
> +  - compatible
> +  - reg
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    i2c {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +        gyroscope@68 {
> +            compatible = "invensense,itg3200";
> +            reg = <0x68>;
> +            interrupt-parent = <&gpio2>;
> +            interrupts = <24 IRQ_TYPE_EDGE_FALLING>;
> +        };
> +    };