dt-bindings: display: panel: Add Himax HX83112B

Himax HX83112B is a display driver IC used to drive LCD DSI panels.
Describe it and the Fairphone 3 panel (98-03057-6598B-I) from DJN using
it.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Luca Weiss <luca@lucaweiss.eu>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250611-fp3-display-v4-2-ef67701e7687@lucaweiss.eu

Documentation/devicetree/bindings/display/panel/himax,hx83112b.yaml

@@ -0,0 +1,73 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/himax,hx83112b.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Himax HX83112B-based DSI display panels
+
+maintainers:
+  - Luca Weiss <luca@lucaweiss.eu>
+
+description:
+  The Himax HX83112B is a generic DSI Panel IC used to control
+  LCD panels.
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    contains:
+      const: djn,98-03057-6598b-i
+
+  reg:
+    maxItems: 1
+
+  iovcc-supply:
+    description: I/O voltage rail
+
+  vsn-supply:
+    description: Positive source voltage rail
+
+  vsp-supply:
+    description: Negative source voltage rail
+
+required:
+  - compatible
+  - reg
+  - reset-gpios
+  - iovcc-supply
+  - vsn-supply
+  - vsp-supply
+  - port
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    dsi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        panel@0 {
+            compatible = "djn,98-03057-6598b-i";
+            reg = <0>;
+
+            reset-gpios = <&tlmm 61 GPIO_ACTIVE_LOW>;
+
+            iovcc-supply = <&pm8953_l6>;
+            vsn-supply = <&pmi632_lcdb_ncp>;
+            vsp-supply = <&pmi632_lcdb_ldo>;
+
+            port {
+                panel_in_0: endpoint {
+                    remote-endpoint = <&dsi0_out>;
+                };
+            };
+        };
+    };
+
+...