[PATCH 2/4] dt-bindings: display: bridge: Repurpose lvds-encoder

[Neil Armstrong]

Hi,


On 30/10/2019 14:43, Fabrizio Castro wrote:
> In an effort to repurpose lvds-encoder.c to also serve the
> function of LVDS decoders, we ended up defining a new "generic"
> compatible string, therefore adapt the dt-bindings to fit the
> new purpose.

You should convert it to dt-schemas in this case.

Neil

> 
> Signed-off-by: Fabrizio Castro <fabrizio.castro at bp.renesas.com>
> ---
>  .../bindings/display/bridge/lvds-codec.txt         | 100 +++++++++++++++++++++
>  .../bindings/display/bridge/lvds-transmitter.txt   |  66 --------------
>  2 files changed, 100 insertions(+), 66 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/display/bridge/lvds-codec.txt
>  delete mode 100644 Documentation/devicetree/bindings/display/bridge/lvds-transmitter.txt
> 
> diff --git a/Documentation/devicetree/bindings/display/bridge/lvds-codec.txt b/Documentation/devicetree/bindings/display/bridge/lvds-codec.txt
> new file mode 100644
> index 0000000..45fd81c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/bridge/lvds-codec.txt
> @@ -0,0 +1,100 @@
> +Trasnparent LVDS encoders and LVDS decoders
> +-------------------------------------------
> +
> +This binding supports transparent LVDS encoders and LVDS decoders that don't
> +require any configuration.
> +
> +LVDS is a physical layer specification defined in ANSI/TIA/EIA-644-A. Multiple
> +incompatible data link layers have been used over time to transmit image data
> +to LVDS panels. This binding targets devices compatible with the following
> +specifications only.
> +
> +[JEIDA] "Digital Interface Standards for Monitor", JEIDA-59-1999, February
> +1999 (Version 1.0), Japan Electronic Industry Development Association (JEIDA)
> +[LDI] "Open LVDS Display Interface", May 1999 (Version 0.95), National
> +Semiconductor
> +[VESA] "VESA Notebook Panel Standard", October 2007 (Version 1.0), Video
> +Electronics Standards Association (VESA)
> +
> +Those devices have been marketed under the FPD-Link and FlatLink brand names
> +among others.
> +
> +
> +Required properties:
> +
> +- compatible: Must be "lvds-encoder" for LVDS encoders or "lvds-decoder" for
> +              LVDS decoders.
> +
> +  Any encoder compatible with this generic binding, but with additional
> +  properties not listed here, must list a device specific compatible first
> +  followed by the generic compatible.
> +
> +Required nodes:
> +
> +This device has two video ports. Their connections are modeled using the OF
> +graph bindings specified in Documentation/devicetree/bindings/graph.txt.
> +
> +For LVDS encoders:
> +- Video port 0 for parallel input
> +- Video port 1 for LVDS output
> +
> +For LVDS decoders:
> +- Video port 0 for LVDS input
> +- Video port 1 for parallel output
> +
> +
> +LVDS encoder example
> +--------------------
> +
> +lvds-encoder {
> +	compatible = "lvds-encoder";
> +
> +	ports {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		port at 0 {
> +			reg = <0>;
> +
> +			lvds_enc_in: endpoint {
> +				remote-endpoint = <&display_out_rgb>;
> +			};
> +		};
> +
> +		port at 1 {
> +			reg = <1>;
> +
> +			lvds_enc_out: endpoint {
> +				remote-endpoint = <&lvds_panel_in>;
> +			};
> +		};
> +	};
> +};
> +
> +LVDS decoder example
> +--------------------
> +
> +lvds-decoder {
> +	compatible = "lvds-decoder";
> +
> +	ports {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		port at 0 {
> +			reg = <0>;
> +
> +			lvds_dec_in: endpoint {
> +				remote-endpoint = <&display_out_lvds>;
> +			};
> +		};
> +
> +		port at 1 {
> +			reg = <1>;
> +
> +			lvds_dec_out: endpoint {
> +				remote-endpoint = <&rgb_panel_in>;
> +			};
> +		};
> +	};
> +};
> diff --git a/Documentation/devicetree/bindings/display/bridge/lvds-transmitter.txt b/Documentation/devicetree/bindings/display/bridge/lvds-transmitter.txt
> deleted file mode 100644
> index 60091db..0000000
> --- a/Documentation/devicetree/bindings/display/bridge/lvds-transmitter.txt
> +++ /dev/null
> @@ -1,66 +0,0 @@
> -Parallel to LVDS Encoder
> -------------------------
> -
> -This binding supports the parallel to LVDS encoders that don't require any
> -configuration.
> -
> -LVDS is a physical layer specification defined in ANSI/TIA/EIA-644-A. Multiple
> -incompatible data link layers have been used over time to transmit image data
> -to LVDS panels. This binding targets devices compatible with the following
> -specifications only.
> -
> -[JEIDA] "Digital Interface Standards for Monitor", JEIDA-59-1999, February
> -1999 (Version 1.0), Japan Electronic Industry Development Association (JEIDA)
> -[LDI] "Open LVDS Display Interface", May 1999 (Version 0.95), National
> -Semiconductor
> -[VESA] "VESA Notebook Panel Standard", October 2007 (Version 1.0), Video
> -Electronics Standards Association (VESA)
> -
> -Those devices have been marketed under the FPD-Link and FlatLink brand names
> -among others.
> -
> -
> -Required properties:
> -
> -- compatible: Must be "lvds-encoder"
> -
> -  Any encoder compatible with this generic binding, but with additional
> -  properties not listed here, must list a device specific compatible first
> -  followed by this generic compatible.
> -
> -Required nodes:
> -
> -This device has two video ports. Their connections are modeled using the OF
> -graph bindings specified in Documentation/devicetree/bindings/graph.txt.
> -
> -- Video port 0 for parallel input
> -- Video port 1 for LVDS output
> -
> -
> -Example
> --------
> -
> -lvds-encoder {
> -	compatible = "lvds-encoder";
> -
> -	ports {
> -		#address-cells = <1>;
> -		#size-cells = <0>;
> -
> -		port at 0 {
> -			reg = <0>;
> -
> -			lvds_enc_in: endpoint {
> -				remote-endpoint = <&display_out_rgb>;
> -			};
> -		};
> -
> -		port at 1 {
> -			reg = <1>;
> -
> -			lvds_enc_out: endpoint {
> -				remote-endpoint = <&lvds_panel_in>;
> -			};
> -		};
> -	};
> -};
>