Re: [PATCH 1/2] dt-bindings: leds: backlight: add Kinetic KTD3137

[Daniel Thompson <danielt@kernel.org>]

On Mon, Nov 02, 2026 at 09:58:48PM +0200, Roman Vivchar via B4 Relay wrote:
> From: Roman Vivchar <rva333@protonmail.com>
>
> Kinetic KTD3137 is an LED IC, used in various mobile devices for the
> display backlight. Add devicetree bindings documentation for this chip.
>
> Datasheet: https://www.kinet-ic.com/uploads/KTD3137-04a.pdf
>
> Signed-off-by: Roman Vivchar <rva333@protonmail.com>
> ---
>  .../bindings/leds/backlight/kinetic,ktd3137.yaml   | 64 ++++++++++++++++++++++
>  MAINTAINERS                                        |  5 ++
>  2 files changed, 69 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/leds/backlight/kinetic,ktd3137.yaml b/Documentation/devicetree/bindings/leds/backlight/kinetic,ktd3137.yaml
> new file mode 100644
> index 000000000000..140615640a9a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/leds/backlight/kinetic,ktd3137.yaml
> @@ -0,0 +1,64 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/leds/backlight/kinetic,ktd3137.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Kinetic Technologies KTD3137 LED Backlight
> +
> +maintainers:
> +  - Roman Vivchar <rva333@protonmail.com>
> +
> +description:
> +  The Kinetic Technologies KTD3137 is an I2C LED backlight driver for medium
> +  to large size LCD panels.
> <snip>
> +  led-max-microamp:
> +    minimum: 5000
> +    maximum: 29800
> +    default: 20200
> +
> +  vin-supply: true
> +
> +required:
> +  - compatible
> +  - reg
> +  - vin-supply

Why is vin-supply required?


Daniel.