Unverified Commit a43661e7 authored by Xin Ji's avatar Xin Ji Committed by Robert Foss
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dt-bindings:drm/bridge:anx7625:add vendor define 



Add 'bus-type' and 'data-lanes' define for port0. Add DP tx lane0,
lane1 swing register setting array, and audio enable flag.

The device which cannot pass DP tx PHY CTS caused by long PCB trace or
embedded MUX, adjusting ANX7625 PHY parameters can pass the CTS test. The
adjusting type include Pre-emphasis, Vp-p, Rterm(Resistor Termination)
and Rsel(Driven Strength). Each lane has maximum 20 registers for
these settings.

Signed-off-by: default avatarXin Ji <xji@analogixsemi.com>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarRobert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20211104033444.2634397-1-xji@analogixsemi.com
parent 16e10105

Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml

+63 −2
Original line number Diff line number Diff line
@@ -43,14 +43,70 @@ properties: 
  vdd33-supply:

    description: Regulator that provides the supply 3.3V power.



  analogix,lane0-swing:

    $ref: /schemas/types.yaml#/definitions/uint8-array

    minItems: 1

    maxItems: 20

    description:

      an array of swing register setting for DP tx lane0 PHY.

      Registers 0~9 are Swing0_Pre0, Swing1_Pre0, Swing2_Pre0,

      Swing3_Pre0, Swing0_Pre1, Swing1_Pre1, Swing2_Pre1, Swing0_Pre2,

      Swing1_Pre2, Swing0_Pre3, they are for [Boost control] and

      [Swing control] setting.

      Registers 0~9, bit 3:0 is [Boost control], these bits control

      post cursor manual, increase the [Boost control] to increase

      Pre-emphasis value.

      Registers 0~9, bit 6:4 is [Swing control], these bits control

      swing manual, increase [Swing control] setting to add Vp-p value

      for each Swing, Pre.

      Registers 10~19 are Swing0_Pre0, Swing1_Pre0, Swing2_Pre0,

      Swing3_Pre0, Swing0_Pre1, Swing1_Pre1, Swing2_Pre1, Swing0_Pre2,

      Swing1_Pre2, Swing0_Pre3, they are for [R select control] and

      [R Termination control] setting.

      Registers 10~19, bit 4:0 is [R select control], these bits are

      compensation manual, increase it can enhance IO driven strength

      and Vp-p.

      Registers 10~19, bit 5:6 is [R termination control], these bits

      adjust 50ohm impedance of DP tx termination. 00:55 ohm,

      01:50 ohm(default), 10:45 ohm, 11:40 ohm.



  analogix,lane1-swing:

    $ref: /schemas/types.yaml#/definitions/uint8-array

    minItems: 1

    maxItems: 20

    description:

      an array of swing register setting for DP tx lane1 PHY.

      DP TX lane1 swing register setting same with lane0

      swing, please refer lane0-swing property description.



  analogix,audio-enable:

    type: boolean

    description: let the driver enable audio HDMI codec function or not.



  ports:

    $ref: /schemas/graph.yaml#/properties/ports



    properties:

      port@0:

        $ref: /schemas/graph.yaml#/properties/port

        $ref: /schemas/graph.yaml#/$defs/port-base

        unevaluatedProperties: false

        description:

          Video port for MIPI DSI input.

          MIPI DSI/DPI input.



        properties:

          endpoint:

            $ref: /schemas/media/video-interfaces.yaml#

            type: object

            additionalProperties: false



            properties:

              remote-endpoint: true



              bus-type:

                enum: [1, 5]

                default: 1



              data-lanes: true



      port@1:

        $ref: /schemas/graph.yaml#/properties/port
@@ -87,6 +143,9 @@ examples: 
            vdd10-supply = <&pp1000_mipibrdg>;

            vdd18-supply = <&pp1800_mipibrdg>;

            vdd33-supply = <&pp3300_mipibrdg>;

            analogix,audio-enable;

            analogix,lane0-swing = /bits/ 8 <0x14 0x54 0x64 0x74>;

            analogix,lane1-swing = /bits/ 8 <0x14 0x54 0x64 0x74>;



            ports {

                #address-cells = <1>;
@@ -96,6 +155,8 @@ examples: 
                    reg = <0>;

                    anx7625_in: endpoint {

                        remote-endpoint = <&mipi_dsi>;

                        bus-type = <5>;

                        data-lanes = <0 1 2 3>;

                    };

                };