dt-bindings: display: samsung,exynos5-dp: convert to DT Schema

Convert Samsung Exynos5250/5420 SoC Display Port Controller bindings to
DT schema with a change: add power-domains, already used in DTS.

This Display Port controller is actually variant of Analogix Display
Port bridge, however new DT Schema does not reference analogix,dp.yaml,
because of incompatibilities in the driver.  The analogix,dp.yaml
expects two ports, input and output, but Linux Exynos DP DRM driver and
DTS use only one port: output.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20240313182855.14140-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>

Author: krzk

Documentation/devicetree/bindings/display/exynos/exynos_dp.txt

@@ -0,0 +1,163 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/samsung/samsung,exynos5-dp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung Exynos5250/Exynos5420 SoC Display Port
+
+maintainers:
+  - Inki Dae <inki.dae@samsung.com>
+  - Seung-Woo Kim <sw0312.kim@samsung.com>
+  - Kyungmin Park <kyungmin.park@samsung.com>
+  - Krzysztof Kozlowski <krzk@kernel.org>
+
+properties:
+  compatible:
+    const: samsung,exynos5-dp
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: dp
+
+  display-timings:
+    $ref: /schemas/display/panel/display-timings.yaml#
+
+  interrupts:
+    maxItems: 1
+
+  hpd-gpios:
+    description:
+      Hotplug detect GPIO.
+      Indicates which GPIO should be used for hotplug detection
+
+  phys:
+    maxItems: 1
+
+  phy-names:
+    items:
+      - const: dp
+
+  power-domains:
+    maxItems: 1
+
+  interlaced:
+    type: boolean
+    deprecated: true
+    description:
+      Interlace scan mode. Progressive if defined, interlaced if not defined.
+
+  vsync-active-high:
+    type: boolean
+    deprecated: true
+    description:
+      VSYNC polarity configuration. High if defined, low if not defined
+
+  hsync-active-high:
+    type: boolean
+    deprecated: true
+    description:
+      HSYNC polarity configuration. High if defined, low if not defined
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port:
+        $ref: /schemas/graph.yaml#/properties/port
+        description:
+          Port node with one endpoint connected to a dp-connector node.
+
+    required:
+      - port
+
+  samsung,hpd-gpios:
+    maxItems: 1
+    deprecated: true
+
+  samsung,ycbcr-coeff:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    deprecated: true
+    description:
+      Deprecated prop that can parsed from drm_display_mode.
+
+  samsung,dynamic-range:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    deprecated: true
+    description:
+      Deprecated prop that can parsed from drm_display_mode.
+
+  samsung,color-space:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    deprecated: true
+    description:
+      Deprecated prop that can parsed from drm_display_info.
+
+  samsung,color-depth:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    deprecated: true
+    description:
+      Deprecated prop that can parsed from drm_display_info.
+
+  samsung,link-rate:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    deprecated: true
+    description:
+      Deprecated prop that can reading from monitor by dpcd method.
+
+  samsung,lane-count:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    deprecated: true
+    description:
+      Deprecated prop that can reading from monitor by dpcd method.
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - interrupts
+  - phys
+  - phy-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/exynos5250.h>
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    dp-controller@145b0000 {
+        compatible = "samsung,exynos5-dp";
+        reg = <0x145b0000 0x1000>;
+        clocks = <&clock CLK_DP>;
+        clock-names = "dp";
+        interrupts = <10 3>;
+        interrupt-parent = <&combiner>;
+        phys = <&dp_phy>;
+        phy-names = "dp";
+        pinctrl-0 = <&dp_hpd>;
+        pinctrl-names = "default";
+        power-domains = <&pd_disp1>;
+
+        samsung,color-space = <0>;
+        samsung,color-depth = <1>;
+        samsung,link-rate = <0x0a>;
+        samsung,lane-count = <2>;
+        hpd-gpios = <&gpx0 7 GPIO_ACTIVE_HIGH>;
+
+        ports {
+            port {
+                dp_out: endpoint {
+                    remote-endpoint = <&bridge_in>;
+                };
+            };
+        };
+    };