linux-kernel - Re: [PATCH v4 1/2] dt-bindings: iio: light: Add APDS9160 binding

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Message-ID: <20250107232919.GA2044181-robh@kernel.org>
Date: Tue, 7 Jan 2025 17:29:19 -0600
From: Rob Herring <robh@...nel.org>
To: Mikael Gonella-Bolduc <mgonellabolduc@...onoff.com>
Cc: Jonathan Cameron <jic23@...nel.org>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Nathan Chancellor <nathan@...nel.org>,
	Nick Desaulniers <ndesaulniers@...gle.com>,
	Bill Wendling <morbo@...gle.com>,
	Justin Stitt <justinstitt@...gle.com>,
	Mikael Gonella-Bolduc <m.gonella.bolduc@...il.com>,
	linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, llvm@...ts.linux.dev,
	Hugo Villeneuve <hvilleneuve@...onoff.com>,
	Matti Vaittinen <mazziesaccount@...il.com>
Subject: Re: [PATCH v4 1/2] dt-bindings: iio: light: Add APDS9160 binding

On Mon, Jan 06, 2025 at 05:23:01PM -0500, Mikael Gonella-Bolduc wrote:
> Add device tree bindings for APDS9160
> Note: Using alternate email for maintainer
> 
> Signed-off-by: Mikael Gonella-Bolduc <mgonellabolduc@...onoff.com>
> ---
>  .../bindings/iio/light/brcm,apds9160.yaml          | 86 ++++++++++++++++++++++
>  1 file changed, 86 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/iio/light/brcm,apds9160.yaml b/Documentation/devicetree/bindings/iio/light/brcm,apds9160.yaml
> new file mode 100644
> index 0000000000000000000000000000000000000000..756d46c2edb171da840ee49a7339cb781fe84ad2
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/light/brcm,apds9160.yaml
> @@ -0,0 +1,86 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/light/brcm,apds9160.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Broadcom Combined Proximity & Ambient light sensor
> +
> +maintainers:
> +  - Mikael Gonella-Bolduc <m.gonella.bolduc@...il.com>
> +
> +description: |
> +  Datasheet: https://docs.broadcom.com/docs/APDS-9160-003-DS
> +
> +properties:
> +  compatible:
> +    enum:
> +      - brcm,apds9160
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  vdd-supply: true
> +
> +  ps-cancellation-duration:

These all need a vendor prefix.

> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: |

Don't need '|' if no formatting to preserve.

> +      Proximity sensor cancellation pulse duration in half clock cycles.
> +      This parameter determines a cancellation pulse duration.

But maybe this is a paragraph break. If so, blank line between 
paragraphs. And '>' is more appropriate than '|' in that case.

> +      The cancellation is applied in the integration phase to cancel out
> +      unwanted reflected light from very near objects such as tempered glass
> +      in front of the sensor.
> +    minimum: 0

That's already the min being unsigned.

> +    maximum: 63
> +    default: 0
> +
> +  ps-cancellation-current-coarse:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: |
> +      Proximity sensor crosstalk cancellation current coarse value.
> +      This parameter adjust the current in steps of 60 nA up to 240 nA.
> +      This parameter is used in conjunction with the cancellation duration.
> +    minimum: 0
> +    maximum: 4
> +    default: 0
> +
> +  ps-cancellation-current-fine:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: |
> +      Proximity sensor crosstalk cancellation current fine value.
> +      This parameter adjust the current in steps of 2.4 nA up to 36 nA.
> +      This parameter is used in conjunction with the cancellation duration.
> +    minimum: 0
> +    maximum: 15
> +    default: 0
> +
> +required:
> +  - compatible
> +  - reg
> +  - vdd-supply
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +
> +    i2c {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        light-sensor@53 {
> +            compatible = "brcm,apds9160";
> +            reg = <0x53>;
> +            vdd-supply = <&vdd_reg>;
> +            interrupts = <29 IRQ_TYPE_EDGE_FALLING>;
> +            interrupt-parent = <&pinctrl>;
> +            ps-cancellation-duration = <10>;
> +            ps-cancellation-current-coarse = <2>;
> +            ps-cancellation-current-fine = <10>;
> +        };
> +    };
> +...
> 
> -- 
> 2.34.1
>