[PATCH v2] dt-bindings: spi: xilinx: convert to yaml

[Nobuhiro Iwamatsu <iwamatsu@nigauri.org>]

Convert SPI for Xilinx bindings documentation to YAML schemas.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
---
 v2: Use enum instead of oneOf with const.
     Add constraints to xlnx,num-ss-bits and xlnx,num-transfer-bits.

 .../devicetree/bindings/spi/spi-xilinx.txt    | 23 --------
 .../devicetree/bindings/spi/spi-xilinx.yaml   | 57 +++++++++++++++++++
 2 files changed, 57 insertions(+), 23 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/spi/spi-xilinx.txt
 create mode 100644 Documentation/devicetree/bindings/spi/spi-xilinx.yaml

diff --git a/Documentation/devicetree/bindings/spi/spi-xilinx.txt b/Documentation/devicetree/bindings/spi/spi-xilinx.txt
deleted file mode 100644
index 5f4ed3e5c9942c..00000000000000
--- a/Documentation/devicetree/bindings/spi/spi-xilinx.txt
+++ /dev/null
@@ -1,23 +0,0 @@
-Xilinx SPI controller Device Tree Bindings
--------------------------------------------------
-
-Required properties:
-- compatible		: Should be "xlnx,xps-spi-2.00.a", "xlnx,xps-spi-2.00.b" or "xlnx,axi-quad-spi-1.00.a"
-- reg			: Physical base address and size of SPI registers map.
-- interrupts		: Property with a value describing the interrupt
-			  number.
-
-Optional properties:
-- xlnx,num-ss-bits	 : Number of chip selects used.
-- xlnx,num-transfer-bits : Number of bits per transfer. This will be 8 if not specified
-
-Example:
-	axi_quad_spi@41e00000 {
-			compatible = "xlnx,xps-spi-2.00.a";
-			interrupt-parent = <&intc>;
-			interrupts = <0 31 1>;
-			reg = <0x41e00000 0x10000>;
-			xlnx,num-ss-bits = <0x1>;
-			xlnx,num-transfer-bits = <32>;
-	};
-
diff --git a/Documentation/devicetree/bindings/spi/spi-xilinx.yaml b/Documentation/devicetree/bindings/spi/spi-xilinx.yaml
new file mode 100644
index 00000000000000..593f7693baceed
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/spi-xilinx.yaml
@@ -0,0 +1,57 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/spi-xilinx.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Xilinx SPI controller Device Tree Bindings
+
+maintainers:
+  - Michal Simek <michal.simek@xilinx.com>
+
+allOf:
+  - $ref: "spi-controller.yaml#"
+
+properties:
+  compatible:
+    enum:
+      - xlnx,xps-spi-2.00.a
+      - xlnx,xps-spi-2.00.b
+      - xlnx,axi-quad-spi-1.00.a
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  xlnx,num-ss-bits:
+    description: Number of chip selects used.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 1
+    maximum: 32
+
+  xlnx,num-transfer-bits:
+    description: Number of bits per transfer. This will be 8 if not specified.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [8, 16, 32]
+    default: 8
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    spi0: spi@41e00000 {
+      compatible = "xlnx,xps-spi-2.00.a";
+      interrupt-parent = <&intc>;
+      interrupts = <0 31 1>;
+      reg = <0x41e00000 0x10000>;
+      xlnx,num-ss-bits = <0x1>;
+      xlnx,num-transfer-bits = <32>;
+    };
+...
-- 
2.30.0