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Date: Tue, 10 Feb 2026 08:19:17 -0600
From: Rob Herring <robh@kernel.org>
To: Svyatoslav Ryhel <clamor95@gmail.com>
Cc: David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Thierry Reding <thierry.reding@gmail.com>,
	Jonathan Hunter <jonathanh@nvidia.com>,
	dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org,
	linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v1 1/2] dt-bindings: display: tegra: document Tegra20
 HDMI port
Message-ID: <20260210141917.GA2659856-robh@kernel.org>
References: <20260210094908.14276-1-clamor95@gmail.com>
 <20260210094908.14276-2-clamor95@gmail.com>
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In-Reply-To: <20260210094908.14276-2-clamor95@gmail.com>

On Tue, Feb 10, 2026 at 11:49:07AM +0200, Svyatoslav Ryhel wrote:
> Tegra HDMI can be modeled using an OF graph. Reflect this in the bindings.
> 
> Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
> ---
>  .../bindings/display/tegra/nvidia,tegra20-hdmi.yaml | 13 +++++++++++--
>  1 file changed, 11 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-hdmi.yaml b/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-hdmi.yaml
> index f77197e4869f..f33b700bf0ee 100644
> --- a/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-hdmi.yaml
> +++ b/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-hdmi.yaml
> @@ -82,6 +82,10 @@ properties:
>      description: phandle of a display panel
>      $ref: /schemas/types.yaml#/definitions/phandle
>  
> +  port:
> +    description: connection to controller receiving HDMI signals

Describe this in terms of this block, not what it is connected to. It 
could be an hdmi-connector node or a bridge.

> +    $ref: /schemas/graph.yaml#/properties/port
> +
>    "#sound-dai-cells":
>      const: 0
>  
> @@ -97,8 +101,13 @@ required:
>    - reset-names
>    - pll-supply
>    - vdd-supply
> -  - nvidia,ddc-i2c-bus
> -  - nvidia,hpd-gpio
> +
> +anyOf:
> +  - required:
> +    - nvidia,ddc-i2c-bus
> +    - nvidia,hpd-gpio
> +  - required:
> +    - port
>  
>  examples:
>    - |
> -- 
> 2.51.0
>