[PATCH 4/8] dt-bindings: arm: mediatek: Add new document bindings for APU

[Flora Fu <flora.fu@mediatek.com>]

Document the apusys bindings.

Signed-off-by: Flora Fu <flora.fu@mediatek.com>
---
 .../arm/mediatek/mediatek,apusys.yaml         | 56 +++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/mediatek/mediatek,apusys.yaml

diff --git a/Documentation/devicetree/bindings/arm/mediatek/mediatek,apusys.yaml b/Documentation/devicetree/bindings/arm/mediatek/mediatek,apusys.yaml
new file mode 100644
index 000000000000..dc04a46f1bad
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/mediatek/mediatek,apusys.yaml
@@ -0,0 +1,56 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/mediatek/mediatek,apusys.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek APUSYS Controller
+
+maintainers:
+  - Flora Fu <flora.fu@mediatek.com>
+
+description:
+  The Mediatek apusys controller provides functional configurations and clocks
+  to the system.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - mediatek,mt8192-apu_mbox
+          - mediatek,mt8192-apu_conn
+          - mediatek,mt8192-apu_vcore
+      - const: syscon
+
+  reg:
+    maxItems: 1
+
+  '#clock-cells':
+    const: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    apu_mbox: apu_mbox@19000000 {
+        compatible = "mediatek,mt8192-apu_mbox", "syscon";
+        reg = <0x19000000 0x1000>;
+    };
+
+  - |
+    apu_conn: apu_conn@19020000 {
+        compatible = "mediatek,mt8192-apu_conn", "syscon";
+        reg = <0x19020000 0x1000>;
+        #clock-cells = <1>;
+    };
+
+  - |
+    apu_vcore: apu_vcore@19029000 {
+        compatible = "mediatek,mt8192-apu_vcore", "syscon";
+        reg = <0x19029000 0x1000>;
+        #clock-cells = <1>;
+    };
-- 
2.18.0