linux-kernel - Re: [PATCH v2 02/21] dt-bindings: display: tegra: vi: add 'vip' property and example

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Message-ID: <20221201231636.GA1660613-robh@kernel.org>
Date:   Thu, 1 Dec 2022 17:16:36 -0600
From:   Rob Herring <robh@...nel.org>
To:     Luca Ceresoli <luca.ceresoli@...tlin.com>
Cc:     David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Sowjanya Komatineni <skomatineni@...dia.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Dmitry Osipenko <digetx@...il.com>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        linux-media@...r.kernel.org, linux-tegra@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-staging@...ts.linux.dev,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Paul Kocialkowski <paul.kocialkowski@...tlin.com>,
        Richard Leitner <richard.leitner@...data.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: Re: [PATCH v2 02/21] dt-bindings: display: tegra: vi: add 'vip'
 property and example

On Mon, Nov 28, 2022 at 04:23:17PM +0100, Luca Ceresoli wrote:
> The Tegra20 VI peripheral can receive parallel input from the VIP parallel
> input module. Add it to the allowed properties and augment the existing
> nvidia,tegra20-vi example to show a 'vip' property.
> 
> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> Signed-off-by: Luca Ceresoli <luca.ceresoli@...tlin.com>
> 
> ---
> 
> Changed in v2 (suggested by Krzysztof Kozlowski):
> - rename "i2c3" -> "ic2"
> - add review tag
> ---
>  .../display/tegra/nvidia,tegra20-vi.yaml      | 68 +++++++++++++++++++
>  MAINTAINERS                                   |  1 +
>  2 files changed, 69 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-vi.yaml b/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-vi.yaml
> index 782a4b10150a..5b5583c2b562 100644
> --- a/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-vi.yaml
> +++ b/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-vi.yaml
> @@ -74,6 +74,22 @@ properties:
>    avdd-dsi-csi-supply:
>      description: DSI/CSI power supply. Must supply 1.2 V.
>  
> +  vip:
> +    $ref: /schemas/display/tegra/nvidia,tegra20-vip.yaml
> +
> +  ports:
> +    $ref: /schemas/graph.yaml#/properties/ports
> +
> +    properties:
> +      port@0:
> +        $ref: /schemas/graph.yaml#/properties/port
> +        description:
> +          Input from the VIP (parallel input capture) module
> +
> +        properties:
> +          endpoint:
> +            $ref: /schemas/graph.yaml#/properties/endpoint

You can drop 'endpoint'. You only need port nodes if there's no extra 
properties in the endpoints.

> +
>  patternProperties:
>    "^csi@[0-9a-f]+$":
>      type: object
> @@ -109,6 +125,22 @@ examples:
>      #include <dt-bindings/clock/tegra20-car.h>
>      #include <dt-bindings/interrupt-controller/arm-gic.h>
>  
> +    i2c {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +        camera@48 {
> +            compatible = "aptina,mt9v111";
> +            reg = <0x48>;
> +            clocks = <&camera_clk>;
> +
> +            port {
> +                mt9v111_out: endpoint {
> +                    remote-endpoint = <&vi_vip_in>;
> +                };
> +            };
> +        };
> +    };
> +
>      vi@...80000 {
>          compatible = "nvidia,tegra20-vi";
>          reg = <0x54080000 0x00040000>;
> @@ -116,6 +148,42 @@ examples:
>          clocks = <&tegra_car TEGRA20_CLK_VI>;
>          resets = <&tegra_car 100>;
>          reset-names = "vi";
> +
> +        vip {
> +            compatible = "nvidia,tegra20-vip";
> +            #address-cells = <1>;
> +            #size-cells = <0>;
> +            channel@0 {
> +                reg = <0>;
> +                ports {
> +                    #address-cells = <1>;
> +                    #size-cells = <0>;
> +                    port@0 {
> +                        reg = <0>;
> +                        vi_vip_in: endpoint {
> +                            remote-endpoint = <&mt9v111_out>;
> +                        };
> +                    };
> +                    port@1 {
> +                        reg = <1>;
> +                        vi_vip_out: endpoint {
> +                            remote-endpoint = <&vi_in>;
> +                        };
> +                    };
> +                };
> +            };
> +        };
> +
> +        ports {
> +            #address-cells = <1>;
> +            #size-cells = <0>;
> +            port@0 {
> +                reg = <0>;
> +                vi_in: endpoint {
> +                    remote-endpoint = <&vi_vip_out>;
> +                };
> +            };
> +        };
>      };
>  
>    - |
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 92c762f85f17..0c97ce22735d 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -20320,6 +20320,7 @@ M:	Luca Ceresoli <luca.ceresoli@...tlin.com>
>  L:	linux-media@...r.kernel.org
>  L:	linux-tegra@...r.kernel.org
>  S:	Maintained
> +F:	Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-vi.yaml
>  F:	Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-vip.yaml
>  
>  TEGRA XUSB PADCTL DRIVER
> -- 
> 2.34.1
> 
>