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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/mediatek/mediatek,postmask.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mediatek display postmask
+
+maintainers:
+  - Chun-Kuang Hu <chunkuang.hu@kernel.org>
+  - Philipp Zabel <p.zabel@pengutronix.de>
+
+description: |
+  Mediatek display postmask, namely POSTMASK, provides round corner pattern
+  generation.
+  POSTMASK device node must be siblings to the central MMSYS_CONFIG node.
+  For a description of the MMSYS_CONFIG binding, see
+  Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml
+  for details.
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - const: mediatek,mt8192-disp-postmask
+      - items:
+          - enum:
+              - mediatek,mt8186-disp-postmask
+          - const: mediatek,mt8192-disp-postmask
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  power-domains:
+    description: A phandle and PM domain specifier as defined by bindings of
+      the power controller specified by phandle. See
+      Documentation/devicetree/bindings/power/power-domain.yaml for details.
+
+  clocks:
+    items:
+      - description: POSTMASK Clock
+
+  mediatek,gce-client-reg:
+    description: The register of client driver can be configured by gce with
+      4 arguments defined in this property, such as phandle of gce, subsys id,
+      register offset and size. Each GCE subsys id is mapping to a client
+      defined in the header include/dt-bindings/gce/<chip>-gce.h.
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - power-domains
+  - clocks
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/mt8192-clk.h>
+    #include <dt-bindings/power/mt8192-power.h>
+    #include <dt-bindings/gce/mt8192-gce.h>
+
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        postmask0: postmask@1400d000 {
+            compatible = "mediatek,mt8192-disp-postmask";
+            reg = <0 0x1400d000 0 0x1000>;
+            interrupts = <GIC_SPI 262 IRQ_TYPE_LEVEL_HIGH 0>;
+            power-domains = <&scpsys MT8192_POWER_DOMAIN_DISP>;
+            clocks = <&mmsys CLK_MM_DISP_POSTMASK0>;
+            mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0xd000 0x1000>;
+        };
+    };