[PATCH v2 1/5] dt-bindings: display: rk3588-dw-hdmi-qp: Add tmds-enable-gpios property

[Dmitry Baryshkov]

On Mon, Oct 06, 2025 at 02:55:37AM +0300, Laurent Pinchart wrote:
> From: Cristian Ciocaltea <cristian.ciocaltea at collabora.com>
> 
> Add an optional property to RK3588 HDMI TX Controller binding describing
> a GPIO line to be asserted when operating in HDMI 1.4/2.0 TMDS mode and
> deasserted for HDMI 2.1 FRL.
> 
> This is used to control an external level shifter for HDMI data lines.
> 
> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea at collabora.com>
> Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
> ---
>  .../display/rockchip/rockchip,rk3588-dw-hdmi-qp.yaml   | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip,rk3588-dw-hdmi-qp.yaml b/Documentation/devicetree/bindings/display/rockchip/rockchip,rk3588-dw-hdmi-qp.yaml
> index 96b4b088eebe..eec0d40c91ea 100644
> --- a/Documentation/devicetree/bindings/display/rockchip/rockchip,rk3588-dw-hdmi-qp.yaml
> +++ b/Documentation/devicetree/bindings/display/rockchip/rockchip,rk3588-dw-hdmi-qp.yaml
> @@ -113,6 +113,13 @@ properties:
>      description:
>        Additional HDMI QP related data is accessed through VO GRF regs.
>  
> +  tmds-enable-gpios:
> +    description:
> +      Optional GPIO line to be asserted when operating in HDMI 1.4/2.0
> +      TMDS mode and deasserted for HDMI 2.1 FRL. It can be used to control
> +      an external level shifter for HDMI data lines.
> +    maxItems: 1

Just my 2c: since TMDS is assumed to be a default mode, shouldn't this
be a frl-enable-gpios instead?

> +
>  required:
>    - compatible
>    - reg

-- 
With best wishes
Dmitry