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diff --git a/Documentation/devicetree/bindings/dma/renesas,usb-dmac.yaml b/Documentation/devicetree/bindings/dma/renesas,usb-dmac.yaml
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+++ b/Documentation/devicetree/bindings/dma/renesas,usb-dmac.yaml
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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dma/renesas,usb-dmac.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas USB DMA Controller
+
+maintainers:
+  - Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
+
+allOf:
+  - $ref: "dma-controller.yaml#"
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - renesas,r8a7743-usb-dmac  # RZ/G1M
+          - renesas,r8a7744-usb-dmac  # RZ/G1N
+          - renesas,r8a7745-usb-dmac  # RZ/G1E
+          - renesas,r8a77470-usb-dmac # RZ/G1C
+          - renesas,r8a774a1-usb-dmac # RZ/G2M
+          - renesas,r8a774b1-usb-dmac # RZ/G2N
+          - renesas,r8a774c0-usb-dmac # RZ/G2E
+          - renesas,r8a7790-usb-dmac  # R-Car H2
+          - renesas,r8a7791-usb-dmac  # R-Car M2-W
+          - renesas,r8a7793-usb-dmac  # R-Car M2-N
+          - renesas,r8a7794-usb-dmac  # R-Car E2
+          - renesas,r8a7795-usb-dmac  # R-Car H3
+          - renesas,r8a7796-usb-dmac  # R-Car M3-W
+          - renesas,r8a77961-usb-dmac # R-Car M3-W+
+          - renesas,r8a77965-usb-dmac # R-Car M3-N
+          - renesas,r8a77990-usb-dmac # R-Car E3
+          - renesas,r8a77995-usb-dmac # R-Car D3
+      - const: renesas,usb-dmac
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    minItems: 2
+    maxItems: 2
+
+  interrupt-names:
+    items:
+      - pattern: ch0
+      - pattern: ch1
+
+  clocks:
+    maxItems: 1
+
+  '#dma-cells':
+    const: 1
+    description:
+      The cell specifies the channel number of the DMAC port connected to
+      the DMA client.
+
+  dma-channels:
+    const: 2
+
+  iommus:
+    minItems: 2
+    maxItems: 2
+
+  power-domains:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - interrupt-names
+  - clocks
+  - '#dma-cells'
+  - dma-channels
+  - power-domains
+  - resets
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/r8a7790-cpg-mssr.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/power/r8a7790-sysc.h>
+
+    usb_dmac0: dma-controller@e65a0000 {
+        compatible = "renesas,r8a7790-usb-dmac", "renesas,usb-dmac";
+        reg = <0xe65a0000 0x100>;
+        interrupts = <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>;
+        interrupt-names = "ch0", "ch1";
+        clocks = <&cpg CPG_MOD 330>;
+        power-domains = <&sysc R8A7790_PD_ALWAYS_ON>;
+        resets = <&cpg 330>;
+        #dma-cells = <1>;
+        dma-channels = <2>;
+    };