linux-kernel - Re: [PATCH v3 1/2] dt-bindings: media: i2c: add galaxycore,gc2145 DVP bus support

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Date: Wed, 22 May 2024 12:11:36 +0000
From: Sakari Ailus <sakari.ailus@...ux.intel.com>
To: Andrey Skvortsov <andrej.skvortzov@...il.com>
Cc: Alain Volmat <alain.volmat@...s.st.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>, linux-media@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	Ondřej Jirman <megi@....cz>,
	Pavel Machek <pavel@....cz>,
	Arnaud Ferraris <arnaud.ferraris@...labora.com>,
	Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: Re: [PATCH v3 1/2] dt-bindings: media: i2c: add galaxycore,gc2145
 DVP bus support

Hi Andrey,

On Sat, May 04, 2024 at 07:41:14PM +0300, Andrey Skvortsov wrote:
> Signed-off-by: Andrey Skvortsov <andrej.skvortzov@...il.com>
> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> ---
>  .../bindings/media/i2c/galaxycore,gc2145.yaml | 65 ++++++++++++++++++-
>  1 file changed, 64 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/media/i2c/galaxycore,gc2145.yaml b/Documentation/devicetree/bindings/media/i2c/galaxycore,gc2145.yaml
> index 1726ecca4c77..3ca5bb94502d 100644
> --- a/Documentation/devicetree/bindings/media/i2c/galaxycore,gc2145.yaml
> +++ b/Documentation/devicetree/bindings/media/i2c/galaxycore,gc2145.yaml
> @@ -61,8 +61,38 @@ properties:
>          properties:
>            link-frequencies: true
>  
> +          bus-type:
> +            enum:
> +              - 4 # CSI-2 D-PHY
> +              - 5 # Parallel
> +            default: 4
> +
> +          bus-width:
> +            const: 8
> +
> +          hsync-active:
> +            enum: [0, 1]
> +            default: 1
> +
> +          vsync-active:
> +            enum: [0, 1]
> +            default: 1
> +
> +          pclk-sample:
> +            enum: [0, 1]
> +            default: 1

These are relevant for bus-type 5 only.

> +
>          required:
> -          - link-frequencies
> +          - bus-type
> +
> +        allOf:
> +          - if:
> +              properties:
> +                bus-type:
> +                  const: 4
> +            then:
> +              required:
> +                - link-frequencies

I think I'd keep the link-frequencies for DVP as well.

>  
>      required:
>        - endpoint
> @@ -84,6 +114,7 @@ additionalProperties: false
>  
>  examples:
>    - |
> +    #include <dt-bindings/media/video-interfaces.h>
>      #include <dt-bindings/gpio/gpio.h>
>  
>      i2c {
> @@ -103,6 +134,7 @@ examples:
>              port {
>                  endpoint {
>                      remote-endpoint = <&mipid02_0>;
> +                    bus-type = <MEDIA_BUS_TYPE_CSI2_DPHY>;
>                      data-lanes = <1 2>;
>                      link-frequencies = /bits/ 64 <120000000 192000000 240000000>;
>                  };
> @@ -110,4 +142,35 @@ examples:
>          };
>      };
>  
> +  - |
> +    #include <dt-bindings/media/video-interfaces.h>
> +    #include <dt-bindings/gpio/gpio.h>
> +
> +    i2c {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        camera@3c {
> +            compatible = "galaxycore,gc2145";
> +            reg = <0x3c>;
> +            clocks = <&clk_ext_camera>;
> +            iovdd-supply = <&scmi_v3v3_sw>;
> +            avdd-supply = <&scmi_v3v3_sw>;
> +            dvdd-supply = <&scmi_v3v3_sw>;
> +            powerdown-gpios = <&mcp23017 3 (GPIO_ACTIVE_LOW | GPIO_PUSH_PULL)>;
> +            reset-gpios = <&mcp23017 4 (GPIO_ACTIVE_LOW | GPIO_PUSH_PULL)>;
> +
> +            port {
> +                endpoint {
> +                    remote-endpoint = <&parallel_from_gc2145>;
> +                    bus-type = <MEDIA_BUS_TYPE_PARALLEL>;
> +                    bus-width = <8>;
> +                    hsync-active = <1>;
> +                    vsync-active = <1>;
> +                    pclk-sample = <1>;
> +                };
> +            };
> +        };
> +    };
> +
>  ...

-- 
Kind regards,

Sakari Ailus