xref: /openbmc/linux/Documentation/devicetree/bindings/display/allwinner,sun8i-a83t-dw-hdmi.yaml (revision a485a5fd)

# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/display/allwinner,sun8i-a83t-dw-hdmi.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Allwinner A83t DWC HDMI TX Encoder Device Tree Bindings

description: |
  The HDMI transmitter is a Synopsys DesignWare HDMI 1.4 TX controller
  IP with Allwinner\'s own PHY IP. It supports audio and video outputs
  and CEC.

  These DT bindings follow the Synopsys DWC HDMI TX bindings defined
  in bridge/synopsys,dw-hdmi.yaml with the following device-specific
  properties.

maintainers:
  - Chen-Yu Tsai <wens@csie.org>
  - Maxime Ripard <mripard@kernel.org>

properties:
  "#phy-cells":
    const: 0

  compatible:
    oneOf:
      - const: allwinner,sun8i-a83t-dw-hdmi
      - const: allwinner,sun50i-h6-dw-hdmi

      - items:
          - enum:
              - allwinner,sun8i-h3-dw-hdmi
              - allwinner,sun8i-r40-dw-hdmi
              - allwinner,sun50i-a64-dw-hdmi
          - const: allwinner,sun8i-a83t-dw-hdmi

  reg:
    maxItems: 1

  reg-io-width:
    const: 1

  interrupts:
    maxItems: 1

  clocks:
    minItems: 3
    maxItems: 6
    items:
      - description: Bus Clock
      - description: Register Clock
      - description: TMDS Clock
      - description: HDMI CEC Clock
      - description: HDCP Clock
      - description: HDCP Bus Clock

  clock-names:
    minItems: 3
    maxItems: 6
    items:
      - const: iahb
      - const: isfr
      - const: tmds
      - const: cec
      - const: hdcp
      - const: hdcp-bus

  resets:
    minItems: 1
    maxItems: 2
    items:
      - description: HDMI Controller Reset
      - description: HDCP Reset

  reset-names:
    minItems: 1
    maxItems: 2
    items:
      - const: ctrl
      - const: hdcp

  phys:
    maxItems: 1
    description:
      Phandle to the DWC HDMI PHY.

  phy-names:
    const: phy

  hvcc-supply:
    description:
      The VCC power supply of the controller

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

    properties:
      port@0:
        $ref: /schemas/graph.yaml#/properties/port
        description: |
          Input endpoints of the controller. Usually the associated
          TCON.

      port@1:
        $ref: /schemas/graph.yaml#/properties/port
        description: |
          Output endpoints of the controller. Usually an HDMI
          connector.

    required:
      - port@0
      - port@1

required:
  - compatible
  - reg
  - reg-io-width
  - interrupts
  - clocks
  - clock-names
  - resets
  - reset-names
  - phys
  - phy-names
  - ports

if:
  properties:
    compatible:
      contains:
        enum:
          - allwinner,sun50i-h6-dw-hdmi

then:
  properties:
    clocks:
      minItems: 6

    clock-names:
      minItems: 6

    resets:
      minItems: 2

    reset-names:
      minItems: 2


additionalProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/arm-gic.h>

    /*
     * This comes from the clock/sun8i-a83t-ccu.h and
     * reset/sun8i-a83t-ccu.h headers, but we can't include them since
     * it would trigger a bunch of warnings for redefinitions of
     * symbols with the other example.
     */
    #define CLK_BUS_HDMI	39
    #define CLK_HDMI		93
    #define CLK_HDMI_SLOW	94
    #define RST_BUS_HDMI1	26

    hdmi@1ee0000 {
        compatible = "allwinner,sun8i-a83t-dw-hdmi";
        reg = <0x01ee0000 0x10000>;
        reg-io-width = <1>;
        interrupts = <GIC_SPI 88 IRQ_TYPE_LEVEL_HIGH>;
        clocks = <&ccu CLK_BUS_HDMI>, <&ccu CLK_HDMI_SLOW>,
                 <&ccu CLK_HDMI>;
        clock-names = "iahb", "isfr", "tmds";
        resets = <&ccu RST_BUS_HDMI1>;
        reset-names = "ctrl";
        phys = <&hdmi_phy>;
        phy-names = "phy";
        pinctrl-names = "default";
        pinctrl-0 = <&hdmi_pins>;
        status = "disabled";

        ports {
            #address-cells = <1>;
            #size-cells = <0>;

            port@0 {
                reg = <0>;

                endpoint {
                    remote-endpoint = <&tcon1_out_hdmi>;
                };
            };

            port@1 {
                reg = <1>;
            };
        };
    };

    /* Cleanup after ourselves */
    #undef CLK_BUS_HDMI
    #undef CLK_HDMI
    #undef CLK_HDMI_SLOW

  - |
    #include <dt-bindings/interrupt-controller/arm-gic.h>

    /*
     * This comes from the clock/sun50i-h6-ccu.h and
     * reset/sun50i-h6-ccu.h headers, but we can't include them since
     * it would trigger a bunch of warnings for redefinitions of
     * symbols with the other example.
     */
    #define CLK_BUS_HDMI	126
    #define CLK_BUS_HDCP	137
    #define CLK_HDMI		123
    #define CLK_HDMI_SLOW	124
    #define CLK_HDMI_CEC	125
    #define CLK_HDCP		136
    #define RST_BUS_HDMI_SUB	57
    #define RST_BUS_HDCP	62

    hdmi@6000000 {
        compatible = "allwinner,sun50i-h6-dw-hdmi";
        reg = <0x06000000 0x10000>;
        reg-io-width = <1>;
        interrupts = <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>;
        clocks = <&ccu CLK_BUS_HDMI>, <&ccu CLK_HDMI_SLOW>,
                 <&ccu CLK_HDMI>, <&ccu CLK_HDMI_CEC>,
                 <&ccu CLK_HDCP>, <&ccu CLK_BUS_HDCP>;
        clock-names = "iahb", "isfr", "tmds", "cec", "hdcp",
                      "hdcp-bus";
        resets = <&ccu RST_BUS_HDMI_SUB>, <&ccu RST_BUS_HDCP>;
        reset-names = "ctrl", "hdcp";
        phys = <&hdmi_phy>;
        phy-names = "phy";
        pinctrl-names = "default";
        pinctrl-0 = <&hdmi_pins>;
        status = "disabled";

        ports {
            #address-cells = <1>;
            #size-cells = <0>;

            port@0 {
                reg = <0>;

                endpoint {
                    remote-endpoint = <&tcon_top_hdmi_out_hdmi>;
                };
            };

            port@1 {
                reg = <1>;
            };
        };
    };

...