dt-bindings: clock: mediatek: Add new MT8188 clock

Add the new binding documentation for system clock
and functional clock on MediaTek MT8188.
Signed-off-by: Garmin.Chang <Garmin.Chang@mediatek.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230331123621.16167-2-Garmin.Chang@mediatek.comSigned-off-by: Stephen Boyd <sboyd@kernel.org>

Documentation/devicetree/bindings/clock/mediatek,mt8188-clock.yaml

+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/mediatek,mt8188-clock.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek Functional Clock Controller for MT8188
+
+maintainers:
+  - Garmin Chang <garmin.chang@mediatek.com>
+
+description: |
+  The clock architecture in MediaTek like below
+  PLLs -->
+          dividers -->
+                      muxes
+                           -->
+                              clock gate
+
+  The devices provide clock gate control in different IP blocks.
+
+properties:
+  compatible:
+    enum:
+      - mediatek,mt8188-adsp-audio26m
+      - mediatek,mt8188-camsys
+      - mediatek,mt8188-camsys-rawa
+      - mediatek,mt8188-camsys-rawb
+      - mediatek,mt8188-camsys-yuva
+      - mediatek,mt8188-camsys-yuvb
+      - mediatek,mt8188-ccusys
+      - mediatek,mt8188-imgsys
+      - mediatek,mt8188-imgsys-wpe1
+      - mediatek,mt8188-imgsys-wpe2
+      - mediatek,mt8188-imgsys-wpe3
+      - mediatek,mt8188-imgsys1-dip-nr
+      - mediatek,mt8188-imgsys1-dip-top
+      - mediatek,mt8188-imp-iic-wrap-c
+      - mediatek,mt8188-imp-iic-wrap-en
+      - mediatek,mt8188-imp-iic-wrap-w
+      - mediatek,mt8188-ipesys
+      - mediatek,mt8188-mfgcfg
+      - mediatek,mt8188-vdecsys
+      - mediatek,mt8188-vdecsys-soc
+      - mediatek,mt8188-vencsys
+      - mediatek,mt8188-vppsys0
+      - mediatek,mt8188-vppsys1
+      - mediatek,mt8188-wpesys
+      - mediatek,mt8188-wpesys-vpp0
+
+  reg:
+    maxItems: 1
+
+  '#clock-cells':
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - '#clock-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    clock-controller@11283000 {
+        compatible = "mediatek,mt8188-imp-iic-wrap-c";
+        reg = <0x11283000 0x1000>;
+        #clock-cells = <1>;
+    };
+

Documentation/devicetree/bindings/clock/mediatek,mt8188-sys-clock.yaml

+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/mediatek,mt8188-sys-clock.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek System Clock Controller for MT8188
+
+maintainers:
+  - Garmin Chang <garmin.chang@mediatek.com>
+
+description: |
+  The clock architecture in MediaTek like below
+  PLLs -->
+          dividers -->
+                      muxes
+                           -->
+                              clock gate
+
+  The apmixedsys provides most of PLLs which generated from SoC 26m.
+  The topckgen provides dividers and muxes which provide the clock source to other IP blocks.
+  The infracfg_ao provides clock gate in peripheral and infrastructure IP blocks.
+  The mcusys provides mux control to select the clock source in AP MCU.
+  The device nodes also provide the system control capacity for configuration.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - mediatek,mt8188-apmixedsys
+          - mediatek,mt8188-infracfg-ao
+          - mediatek,mt8188-pericfg-ao
+          - mediatek,mt8188-topckgen
+      - const: syscon
+
+  reg:
+    maxItems: 1
+
+  '#clock-cells':
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - '#clock-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    clock-controller@10000000 {
+        compatible = "mediatek,mt8188-topckgen", "syscon";
+        reg = <0x10000000 0x1000>;
+        #clock-cells = <1>;
+    };