dt-bindings: devapc: add bindings for mtk-devapc

Add bindings for mtk-devapc.
Signed-off-by: Neal Liu <neal.liu@mediatek.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/1602732039-12179-2-git-send-email-neal.liu@mediatek.comSigned-off-by: Matthias Brugger <matthias.bgg@gmail.com>

Documentation/devicetree/bindings/soc/mediatek/devapc.yaml

+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# # Copyright 2020 MediaTek Inc.
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/soc/mediatek/devapc.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: MediaTek Device Access Permission Control driver
+
+description: |
+  MediaTek bus fabric provides TrustZone security support and data
+  protection to prevent slaves from being accessed by unexpected masters.
+  The security violation is logged and sent to the processor for further
+  analysis and countermeasures.
+
+maintainers:
+  - Neal Liu <neal.liu@mediatek.com>
+
+properties:
+  compatible:
+    enum:
+      - mediatek,mt6779-devapc
+
+  reg:
+    description: The base address of devapc register bank
+    maxItems: 1
+
+  interrupts:
+    description: A single interrupt specifier
+    maxItems: 1
+
+  clocks:
+    description: Contains module clock source and clock names
+    maxItems: 1
+
+  clock-names:
+    description: Names of the clocks list in clocks property
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/mt6779-clk.h>
+
+    devapc: devapc@10207000 {
+      compatible = "mediatek,mt6779-devapc";
+      reg = <0x10207000 0x1000>;
+      interrupts = <GIC_SPI 168 IRQ_TYPE_LEVEL_LOW>;
+      clocks = <&infracfg_ao CLK_INFRA_DEVICE_APC>;
+      clock-names = "devapc-infra-clock";
+    };