[PATCH 1/3] dt-bindings: arm: airoha: Add documentation for Airoha SPI controller

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Create documentation for accessing the Airoha EN7523 SPI controller.

Signed-off-by: Bert Vermeulen <bert@xxxxxxxx>
---
 .../bindings/spi/airoha,en7523-spi.yaml       | 54 +++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/spi/airoha,en7523-spi.yaml

diff --git a/Documentation/devicetree/bindings/spi/airoha,en7523-spi.yaml b/Documentation/devicetree/bindings/spi/airoha,en7523-spi.yaml
new file mode 100644
index 000000000000..e5bc7814424e
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/airoha,en7523-spi.yaml
@@ -0,0 +1,54 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/airoha,en7523-spi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Airoha EN7523 SPI controller
+
+maintainers:
+  - Bert Vermeulen <bert@xxxxxxxx>
+
+description: |
+  This binding describes the SPI controller on Airoha EN7523 SoCs.
+
+allOf:
+  - $ref: "spi-controller.yaml#"
+
+properties:
+  compatible:
+    items:
+      - const: airoha,en7523-spi
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: SPI clock
+
+  clock-names:
+    items:
+      - const: spi
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - '#address-cells'
+  - '#size-cells'
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/en7523-clk.h>
+    spi0: spi@1fa10000 {
+      compatible = "airoha,en7523-spi";
+      reg = <0x1fa10000 0x10000>;
+      #address-cells = <1>;
+      #size-cells = <0>;
+      clocks = <&scu EN7523_CLK_SPI>;
+      clock-names = "spi";
+    };
-- 
2.25.1




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