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diff --git a/Documentation/devicetree/bindings/mmc/marvell,orion-sdio.yaml b/Documentation/devicetree/bindings/mmc/marvell,orion-sdio.yaml
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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mmc/marvell,orion-sdio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Marvell orion-sdio controller
+
+maintainers:
+  - Nicolas Pitre <nico@fluxnic.net>
+  - Ulf Hansson <ulf.hansson@linaro.org>
+
+allOf:
+  - $ref: mmc-controller.yaml#
+
+properties:
+  compatible:
+    const: marvell,orion-sdio
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    mmc@d00d4000 {
+      compatible = "marvell,orion-sdio";
+      reg = <0xd00d4000 0x200>;
+      interrupts = <54>;
+      clocks = <&gateclk 17>;
+    };