diff --git a/Documentation/devicetree/bindings/iio/adc/mediatek,spmi-pmic-auxadc.yaml b/Documentation/devicetree/bindings/iio/adc/mediatek,spmi-pmic-auxadc.yaml
new file mode 100644
index 000000000000..250782ad7d01
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/mediatek,spmi-pmic-auxadc.yaml
@@ -0,0 +1,31 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/mediatek,spmi-pmic-auxadc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek SPMI PMIC AUXADC
+
+maintainers:
+  - Lu Tang <lu.tang@mediatek.com>
+
+description:
+  The Auxiliary Analog/Digital Converter (AUXADC) is an ADC found
+  in some MediaTek PMICs, performing various PMIC related measurements
+  such as battery and PMIC internal voltage regulators temperatures,
+  other than voltages for various PMIC internal components.
+
+properties:
+  compatible:
+    enum:
+      - mediatek,mt6363-auxadc
+      - mediatek,mt6373-auxadc
+
+  "#io-channel-cells":
+    const: 1
+
+required:
+  - compatible
+  - "#io-channel-cells"
+
+additionalProperties: false
diff --git a/Documentation/devicetree/bindings/input/mediatek,pmic-keys.yaml b/Documentation/devicetree/bindings/input/mediatek,pmic-keys.yaml
index b95435bd6a9b..ce760039d4c2 100644
--- a/Documentation/devicetree/bindings/input/mediatek,pmic-keys.yaml
+++ b/Documentation/devicetree/bindings/input/mediatek,pmic-keys.yaml
@@ -31,6 +31,7 @@ properties:
       - mediatek,mt6358-keys
       - mediatek,mt6359-keys
       - mediatek,mt6397-keys
+      - mediatek,mt6363-keys
 
   power-off-time-sec: true
 
diff --git a/Documentation/devicetree/bindings/mfd/mediatek,mt6685.yaml b/Documentation/devicetree/bindings/mfd/mediatek,mt6685.yaml
new file mode 100644
index 000000000000..d3276df8952b
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/mediatek,mt6685.yaml
@@ -0,0 +1,50 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/mediatek,mt6685.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek MT6685 Clock IC
+
+maintainers:
+  - Lu Tang <lu.tang@mediatek.com>
+
+description: |
+  MT6685 is a clock IC.
+  Please see the sub-modules below for supported features.
+
+  MT6685 is a multifunction device with the following sub modules:
+  - RTC
+  - Clock
+
+properties:
+  compatible:
+    const: mediatek,mt6685
+
+  interrupts:
+    maxItems: 1
+
+  interrupt-controller: true
+
+  "#interrupt-cells":
+    const: 2
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/spmi/spmi.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    spmi {
+        mfd@9 {
+            compatible = "mediatek,mt6685";
+            reg = <0x9 SPMI_USID>;
+            #address-cells = <1>;
+            #size-cells = <0>;
+        };
+    };
diff --git a/Documentation/devicetree/bindings/mfd/mediatek,spmi-pmic.yaml b/Documentation/devicetree/bindings/mfd/mediatek,spmi-pmic.yaml
new file mode 100644
index 000000000000..a8f1231623cf
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/mediatek,spmi-pmic.yaml
@@ -0,0 +1,173 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/mediatek,spmi-pmic.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek SPMI PMICs multi-function device
+
+maintainers:
+  - Lu Tang <lu.tang@mediatek.com>
+
+description: |
+  Some Mediatek PMICs are interfaced to the chip via the SPMI (System Power
+  Management Interface) bus.
+
+  The Mediatek SPMI series includes the MT6363, MT6373, MT6316 and other
+  PMICs.Please see the sub-modules below for supported features.
+
+   MT6363/MT6373 is a multifunction device with the following sub modules:
+  - Regulators
+  - ADC
+  - GPIO
+  - Keys
+   MT6316 is a multifunction device with the following sub modules:
+  - Regulators
+
+properties:
+  compatible:
+    oneOf:
+      - enum:
+          - mediatek,mt6363
+          - mediatek,mt6373
+          - mediatek,mt6316
+
+  interrupts:
+    maxItems: 1
+
+  interrupt-controller: true
+
+  "#interrupt-cells":
+    const: 2
+
+  regulators:
+    type: object
+    description:
+      List of child nodes that specify the regulators.
+    additionalProperties: true
+
+    properties:
+      compatible:
+        oneOf:
+          - enum:
+              - mediatek,mt6363-regulator
+              - mediatek,mt6373-regulator
+              - mediatek,mt6316-regulator
+
+    required:
+      - compatible
+
+  adc:
+    type: object
+    $ref: /schemas/iio/adc/mediatek,spmi-pmic-auxadc.yaml#
+    unevaluatedProperties: false
+
+  keys:
+    type: object
+    $ref: /schemas/input/mediatek,pmic-keys.yaml
+    unevaluatedProperties: false
+    description:
+      Power and Home keys.
+
+  pinctrl:
+    type: object
+    $ref: /schemas/pinctrl/mediatek,mt65xx-pinctrl.yaml
+    unevaluatedProperties: false
+    description:
+      Pin controller
+
+required:
+  - compatible
+  - regulators
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/spmi/spmi.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    spmi {
+        main_pmic: pmic@4 {
+            compatible = "mediatek,mt6363";
+            reg = <0x4 SPMI_USID>;
+            interrupts = <0x4 IRQ_TYPE_NONE>;
+            #address-cells = <0>;
+            interrupt-controller;
+            #interrupt-cells = <2>;
+
+            mt6363keys: keys {
+                compatible = "mediatek,mt6363-keys";
+                mediatek,long-press-mode = <1>;
+                power-off-time-sec = <0>;
+
+                power {
+                    linux,keycodes = <116>;
+                    wakeup-source;
+                };
+
+                home {
+                    linux,keycodes = <115>;
+                };
+            };
+
+            mt6363_pio: pinctrl {
+                compatible = "mediatek,mt6363-pinctrl";
+                gpio-controller;
+                #gpio-cells = <2>;
+            };
+
+            mt6363regulator: regulators {
+                compatible = "mediatek,mt6363-regulator";
+
+                mt6363_vs2: vs2 {
+                    regulator-name = "mt6363_vs2";
+                    regulator-allowed-modes = <0 1 2>;
+                    regulator-always-on;
+                    regulator-allow-set-load;
+                };
+
+                mt6363_vbuck1: vbuck1 {
+                    regulator-name = "mt6363_vbuck1";
+                    regulator-allowed-modes = <0 1 2>;
+                };
+
+                mt6363_vbuck2: vbuck2 {
+                    regulator-name = "mt6363_vbuck2";
+                    regulator-allowed-modes = <0 1 2>;
+                };
+
+                mt6363_vbuck3: vbuck3 {
+                    regulator-name = "mt6363_vbuck3";
+                    regulator-allowed-modes = <0 1 2>;
+                };
+
+                mt6363_vbuck4: vbuck4 {
+                    regulator-name = "mt6363_vbuck4";
+                    regulator-allowed-modes = <0 1 2>;
+                };
+
+                mt6363_vbuck5: vbuck5 {
+                    regulator-name = "mt6363_vbuck5";
+                    regulator-allowed-modes = <0 1 2>;
+                };
+
+                mt6363_vbuck6: vbuck6 {
+                    regulator-name = "mt6363_vbuck6";
+                    regulator-allowed-modes = <0 1 2>;
+                };
+
+                mt6363_vbuck7: vbuck7 {
+                    regulator-name = "mt6363_vbuck7";
+                    regulator-allowed-modes = <0 1 2>;
+                };
+
+                // ...
+
+                mt6363_isink_load: isink-load {
+                    regulator-name = "mt6363_isink_load";
+                };
+            };
+        };
+    };
diff --git a/Documentation/devicetree/bindings/pinctrl/mediatek,mt65xx-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/mediatek,mt65xx-pinctrl.yaml
index bccff08a5ba3..bf3ba58a7705 100644
--- a/Documentation/devicetree/bindings/pinctrl/mediatek,mt65xx-pinctrl.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/mediatek,mt65xx-pinctrl.yaml
@@ -17,6 +17,7 @@ properties:
     enum:
       - mediatek,mt2701-pinctrl
       - mediatek,mt2712-pinctrl
+      - mediatek,mt6363-pinctrl
       - mediatek,mt6397-pinctrl
       - mediatek,mt7623-pinctrl
       - mediatek,mt8127-pinctrl
