dt-bindings: spi: zynq: Convert Zynq QSPI binding to yaml

Convert spi-zynq-qspi.txt to yaml.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/4ece21a7e9691ed1e775fd6b0b4046b1562e44bd.1612951821.git.michal.simek@xilinx.com


Reviewed-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/spi/spi-zynq-qspi.txt

-Xilinx Zynq QSPI controller Device Tree Bindings
--------------------------------------------------------------------
-
-Required properties:
-- compatible		: Should be "xlnx,zynq-qspi-1.0".
-- reg			: Physical base address and size of QSPI registers map.
-- interrupts		: Property with a value describing the interrupt
-			  number.
-- clock-names		: List of input clock names - "ref_clk", "pclk"
-			  (See clock bindings for details).
-- clocks		: Clock phandles (see clock bindings for details).
-
-Optional properties:
-- num-cs		: Number of chip selects used.
-
-Example:
-	qspi: spi@e000d000 {
-		compatible = "xlnx,zynq-qspi-1.0";
-		reg = <0xe000d000 0x1000>;
-		interrupt-parent = <&intc>;
-		interrupts = <0 19 4>;
-		clock-names = "ref_clk", "pclk";
-		clocks = <&clkc 10>, <&clkc 43>;
-		num-cs = <1>;
-	};

Documentation/devicetree/bindings/spi/xlnx,zynq-qspi.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/xlnx,zynq-qspi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Xilinx Zynq QSPI controller
+
+description:
+  The Xilinx Zynq QSPI controller is used to access multi-bit serial flash
+  memory devices.
+
+allOf:
+  - $ref: "spi-controller.yaml#"
+
+maintainers:
+  - Michal Simek <michal.simek@xilinx.com>
+
+# Everything else is described in the common file
+properties:
+  compatible:
+    const: xlnx,zynq-qspi-1.0
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: reference clock
+      - description: peripheral clock
+
+  clock-names:
+    items:
+      - const: ref_clk
+      - const: pclk
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    spi@e000d000 {
+        compatible = "xlnx,zynq-qspi-1.0";
+        reg = <0xe000d000 0x1000>;
+        interrupt-parent = <&intc>;
+        interrupts = <0 19 4>;
+        clock-names = "ref_clk", "pclk";
+        clocks = <&clkc 10>, <&clkc 43>;
+        num-cs = <1>;
+    };

MAINTAINERS

@@ -2766,6 +2766,7 @@ W:	http://wiki.xilinx.com
 T:	git https://github.com/Xilinx/linux-xlnx.git
 F:	Documentation/devicetree/bindings/i2c/cdns,i2c-r1p10.yaml
 F:	Documentation/devicetree/bindings/i2c/xlnx,xps-iic-2.00.a.yaml
+F:	Documentation/devicetree/bindings/spi/xlnx,zynq-qspi.yaml
 F:	arch/arm/mach-zynq/
 F:	drivers/block/xsysace.c
 F:	drivers/clocksource/timer-cadence-ttc.c