Re: [PATCH v6 1/2] dt-bindings: iio: light: add as7343

[Joshua Crofts]

On Tue, 13 Oct 2026 19:56:38 +0800
Chang Yu <marcus.yu.56@xxxxxxxxx> wrote:

> Add binding for AMS AS7343 which is a 14-channel multi-spectral sensor
> with i2c address of 0x39.
> 
> The GPIO pin is not described because the datasheet does not document
> how to use it for hardware synchronization at all. The GPIO register
> also has no mode-select bit to isolate the pin from the chip's
> internal control logic. Exposing it as a generic GPIO could result
> in kernel writes being overwritten by internal logic.
> 
> Datasheet: https://look.ams-osram.com/m/5f2d27fff9a874d2/original/AS7343-14-Channel-Multi-Spectral-Sensor.pdf
> Signed-off-by: Chang Yu <marcus.yu.56@xxxxxxxxx>
> ---
> Changes in v6:
>  - Add a ref to leds/common.yaml for the LDR pin.
> 
> Changes in v5:
>  - Remove the GPIO pin.
> 
> Changes in v4:
>  - Fix led-max-microamp property name.
> 
> Changes in v3:
>  - Add missing include for gpio.
>  - Expand GPIO descrption to include hardware synchronization.
>  - Use led-max-microamp instead of led-current-microamp for the LDR pin.
> 
> Changes in v2:
>  - Add the LDR, the interrupt pin, and the GPIO pin to the bindings.
>  - Fix node name and unit address mismatch.
>  - Include MAINTAINERS changes.
> 
>  .../bindings/iio/light/ams,as7343.yaml        | 66 +++++++++++++++++++
>  MAINTAINERS                                   |  6 ++
>  2 files changed, 72 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/light/ams,as7343.yaml
> 
> diff --git a/Documentation/devicetree/bindings/iio/light/ams,as7343.yaml b/Documentation/devicetree/bindings/iio/light/ams,as7343.yaml
> new file mode 100644
> index 000000000000..7fb10b0d4843
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/light/ams,as7343.yaml
> @@ -0,0 +1,66 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/light/ams,as7343.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: AMS AS7343 14-Channel Multi-Spectral Sensor
> +
> +maintainers:
> +  - Chang Yu <marcus.yu.56@xxxxxxxxx>
> +
> +description: |
> +  The AMS AS7343 is a 14-channel multi-spectral sensor with i2c address of 0x39.
> +  https://look.ams-osram.com/m/5f2d27fff9a874d2/original/AS7343-14-Channel-Multi-Spectral-Sensor.pdf
> +
> +properties:
> +  compatible:
> +    enum:
> +      - ams,as7343
> +
> +  reg:
> +    description:
> +      I2C address of the device (0x39).
> +    maxItems: 1
> +
> +  interrupts:
> +    description:
> +      Open drain output active low interrupt pin.
> +    maxItems: 1
> +
> +  vdd-supply: true
> +
> +  led-max-microamp:
> +    description:
> +      The driver current for the external LED connected to the LDR pin.
> +    minimum: 4000
> +    maximum: 258000
> +    multipleOf: 2000
> +    default: 12000
> +
> +required:
> +  - compatible
> +  - reg
> +  - vdd-supply
> +
> +additionalProperties: false

Should be unevaluatedProperties as you're using $refs in the binding,
but Jonathan could tweak that when applying.

-- 
Kind regards,
Joshua Crofts