Re: [PATCH 2/9] media: dt-bindings: Add Himax HM1092 NIR sensor

[Krzysztof Kozlowski]

On Wed, Jun 10, 2026 at 04:39:27PM +0530, Ramshouriesh wrote:
> Add a dt-binding schema for the Himax HM1092 1MP monochrome
> near-infrared CMOS sensor, used as the face-authentication IR camera on
> Snapdragon X laptops such as the ASUS Zenbook A14. The sensor streams
> 10-bit RAW over 1 or 2 MIPI CSI-2 data lanes.
> 
> The optional generic "leds" property (video-interface-devices.yaml)
> associates an IR illuminator flash LED with the sensor, which the
> driver strobes while streaming.
> 
> Signed-off-by: Ramshouriesh <rshouriesh@xxxxxxxxx>
> ---
>  .../bindings/media/i2c/himax,hm1092.yaml           | 118 +++++++++++++++++++++
>  1 file changed, 118 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/media/i2c/himax,hm1092.yaml b/Documentation/devicetree/bindings/media/i2c/himax,hm1092.yaml
> new file mode 100644
> index 000000000000..085001493a20
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/i2c/himax,hm1092.yaml
> @@ -0,0 +1,118 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/media/i2c/himax,hm1092.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Himax HM1092 Monochrome NIR Sensor
> +
> +maintainers:
> +  - Ramshouriesh <rshouriesh@xxxxxxxxx>
> +
> +description:
> +  The Himax HM1092 is a 1 megapixel monochrome near-infrared CMOS image
> +  sensor with a MIPI CSI-2 interface, commonly used as the IR camera for
> +  face authentication on laptops. It supports 10 bit RAW output at
> +  1288x728 over 1 or 2 CSI-2 data lanes. An optional infrared
> +  illuminator LED may be associated with the sensor through the generic
> +  "leds" property; the driver strobes it while the sensor is streaming
> +  so the scene stays lit for IR capture.
> +
> +allOf:
> +  - $ref: /schemas/media/video-interface-devices.yaml#
> +
> +properties:
> +  compatible:
> +    const: himax,hm1092
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +  avdd-supply:
> +    description: Analogue circuit voltage supply.
> +
> +  dovdd-supply:
> +    description: I/O circuit voltage supply.
> +
> +  dvdd-supply:
> +    description: Digital circuit voltage supply.
> +
> +  reset-gpios:
> +    maxItems: 1
> +    description: Active low GPIO connected to the XSHUTDOWN pad.
> +
> +  leds:

Drop, unevaluatedPropertes already allows that.

> +    description:
> +      Optional phandle to an infrared illuminator flash LED strobed by
> +      the driver while streaming.
> +
> +  port:
> +    $ref: /schemas/graph.yaml#/$defs/port-base
> +    additionalProperties: false
> +
> +    properties:
> +      endpoint:
> +        $ref: /schemas/media/video-interfaces.yaml#
> +        additionalProperties: false

use unevaluatedProperties here

> +
> +        properties:
> +          data-lanes:
> +            minItems: 1
> +            maxItems: 2
> +          link-frequencies: true
> +          remote-endpoint: true

And drop these two

> +
> +        required:
> +          - data-lanes
> +          - link-frequencies
> +          - remote-endpoint

Why do you need this? Which other binding did you take as an
example/starting point?

> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks

Supplies are required

> +  - port
> +
> +unevaluatedProperties: false

Best regards,
Krzysztof