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diff --git a/Documentation/devicetree/bindings/spi/spi-sunplus-sp7021.yaml b/Documentation/devicetree/bindings/spi/spi-sunplus-sp7021.yaml
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+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright (C) Sunplus Co., Ltd. 2021
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/spi-sunplus-sp7021.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sunplus sp7021 SPI controller
+
+allOf:
+  - $ref: spi-controller.yaml
+
+maintainers:
+  - Li-hao Kuo <lhjeff911@gmail.com>
+
+properties:
+  compatible:
+    enum:
+      - sunplus,sp7021-spi
+
+  reg:
+    items:
+      - description: the SPI master registers
+      - description: the SPI slave registers
+
+  reg-names:
+    items:
+      - const: master
+      - const: slave
+
+  interrupt-names:
+    items:
+      - const: dma_w
+      - const: master_risc
+      - const: slave_risc
+
+  interrupts:
+    minItems: 3
+
+  clocks:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - interrupts
+  - interrupt-names
+  - clocks
+  - resets
+  - pinctrl-names
+  - pinctrl-0
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    spi@9c002d80 {
+        compatible = "sunplus,sp7021-spi";
+        reg = <0x9c002d80 0x80>, <0x9c002e00 0x80>;
+        reg-names = "master", "slave";
+        interrupt-parent = <&intc>;
+        interrupt-names = "dma_w",
+                          "master_risc",
+                          "slave_risc";
+        interrupts = <144 IRQ_TYPE_LEVEL_HIGH>,
+                     <146 IRQ_TYPE_LEVEL_HIGH>,
+                     <145 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&clkc 0x32>;
+        resets = <&rstc 0x22>;
+        pinctrl-names = "default";
+        pinctrl-0 = <&pins_spi0>;
+    };
+...