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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/renesas,emev2-smu.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas EMMA Mobile EV2 System Management Unit
+
+maintainers:
+  - Geert Uytterhoeven <geert+renesas@glider.be>
+  - Magnus Damm <magnus.damm@gmail.com>
+
+description: |
+  The System Management Unit is described in user's manual R19UH0037EJ1000_SMU.
+  This is not a clock provider, but clocks under SMU depend on it.
+
+properties:
+  compatible:
+    const: renesas,emev2-smu
+
+  reg:
+    maxItems: 1
+
+  '#address-cells':
+    const: 2
+
+  '#size-cells':
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - '#address-cells'
+  - '#size-cells'
+
+patternProperties:
+  ".*sclkdiv@.*":
+    type: object
+
+    description: |
+      Function block with an input mux and a divider, which corresponds to
+      "Serial clock generator" in fig. "Clock System Overview" of the manual,
+      and "xxx frequency division setting register" (XXXCLKDIV) registers.
+      This makes internal (neither input nor output) clock that is provided
+      to input of xxxGCLK block.
+
+    properties:
+      compatible:
+        const: renesas,emev2-smu-clkdiv
+
+      reg:
+        maxItems: 1
+        description:
+          Byte offset from SMU base and Bit position in the register.
+
+      clocks:
+        minItems: 1
+        maxItems: 4
+
+      '#clock-cells':
+        const: 0
+
+    required:
+      - compatible
+      - reg
+      - clocks
+      - '#clock-cells'
+
+    additionalProperties: false
+
+  ".*sclk@.*":
+    type: object
+
+    description: |
+      Clock gating node shown as "Clock stop processing block" in the
+      fig. "Clock System Overview" of the manual.
+      Registers are "xxx clock gate control register" (XXXGCLKCTRL).
+
+    properties:
+      compatible:
+        const: renesas,emev2-smu-gclk
+
+      reg:
+        maxItems: 1
+        description:
+          Byte offset from SMU base and Bit position in the register.
+
+      clocks:
+        maxItems: 1
+
+      '#clock-cells':
+        const: 0
+
+    required:
+      - compatible
+      - reg
+      - clocks
+      - '#clock-cells'
+
+    additionalProperties: false
+
+additionalProperties: true
+
+examples:
+  - |
+    // Example of clock-tree description:
+    //
+    //  This describes a clock path in the clock tree
+    //   c32ki -> pll3_fo -> usia_u0_sclkdiv -> usia_u0_sclk
+    clocks@e0110000 {
+            compatible = "renesas,emev2-smu";
+            reg = <0xe0110000 0x10000>;
+            #address-cells = <2>;
+            #size-cells = <0>;
+
+            c32ki: c32ki {
+                    compatible = "fixed-clock";
+                    clock-frequency = <32768>;
+                    #clock-cells = <0>;
+            };
+            pll3_fo: pll3_fo {
+                    compatible = "fixed-factor-clock";
+                    clocks = <&c32ki>;
+                    clock-div = <1>;
+                    clock-mult = <7000>;
+                    #clock-cells = <0>;
+            };
+            usia_u0_sclkdiv: usia_u0_sclkdiv@610,0 {
+                    compatible = "renesas,emev2-smu-clkdiv";
+                    reg = <0x610 0>;
+                    clocks = <&pll3_fo>;
+                    #clock-cells = <0>;
+            };
+            usia_u0_sclk: usia_u0_sclk@4a0,1 {
+                    compatible = "renesas,emev2-smu-gclk";
+                    reg = <0x4a0 1>;
+                    clocks = <&usia_u0_sclkdiv>;
+                    #clock-cells = <0>;
+            };
+    };