[PATCH 01/17] dt-bindings: mailbox: mediatek: Add APU mailbox compatible

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

Add the mailbox compatible for the MediaTek APU.
The MT8192 and MT8195 SOC will use it.

Signed-off-by: Pi-Cheng Chen <pi-cheng.chen@mediatek.com>
Signed-off-by: Flora Fu <flora.fu@mediatek.com>

---
 .../mailbox/mediatek,apu-mailbox.yaml         | 47 +++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mailbox/mediatek,apu-mailbox.yaml

diff --git a/Documentation/devicetree/bindings/mailbox/mediatek,apu-mailbox.yaml b/Documentation/devicetree/bindings/mailbox/mediatek,apu-mailbox.yaml
new file mode 100644
index 000000000000..ffd0e1623955
--- /dev/null
+++ b/Documentation/devicetree/bindings/mailbox/mediatek,apu-mailbox.yaml
@@ -0,0 +1,47 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright (C) 2021 MediaTek Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mailbox/mediatek,apu-mailbox.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek AI Processing Unit mailbox controller bindings
+
+description:
+  The APU mailbox controller provides access from the
+  application processor to the MediaTek AI Processing Unit.
+
+maintainers:
+  - Pi-Cheng Chen <pi-cheng.chen@mediatek.com>
+
+properties:
+  compatible:
+    enum:
+      - mediatek,mtk-apu-mailbox
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  "#mbox-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - "#mbox-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    apu_mailbox: apu_mailbox@19000000 {
+      compatible = "mediatek,mtk-apu-mailbox";
+      reg = <0x19000000 0x100>;
+      interrupts = <GIC_SPI 404 IRQ_TYPE_LEVEL_HIGH 0>;
+      #mbox-cells = <1>;
+    };
-- 
2.18.0