[PATCH v3] dt-bindings: rtc: zynqmp: convert bindings to YAML

[Nobuhiro Iwamatsu]

Convert Real Time Clock for Xilinx Zynq MPSoC SoC bindings documentation
to YAML schemas.
And this renamed the file to compatible string of DT.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@xxxxxxxxxxx>
---
v3: Fix description.
    Add $refs to calibration property.
    Add minimum, maximum and default to calibration property.
v2: Fix warning with DT_CHECKER_FLAGS=-m

 .../bindings/rtc/xlnx,zynqmp-rtc.yaml         | 65 +++++++++++++++++++
 .../devicetree/bindings/rtc/xlnx-rtc.txt      | 25 -------
 2 files changed, 65 insertions(+), 25 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/rtc/xlnx,zynqmp-rtc.yaml
 delete mode 100644 Documentation/devicetree/bindings/rtc/xlnx-rtc.txt

diff --git a/Documentation/devicetree/bindings/rtc/xlnx,zynqmp-rtc.yaml b/Documentation/devicetree/bindings/rtc/xlnx,zynqmp-rtc.yaml
new file mode 100644
index 00000000000000..bdb72d3ddf2a93
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/xlnx,zynqmp-rtc.yaml
@@ -0,0 +1,65 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rtc/xlnx,zynqmp-rtc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Xilinx Zynq Ultrascale+ MPSoC Real Time Clock
+
+description:
+  RTC controller for the Xilinx Zynq MPSoC Real Time Clock.
+  The RTC controller has separate IRQ lines for seconds and alarm.
+
+maintainers:
+  - Michal Simek <michal.simek@xxxxxxxxxx>
+
+allOf:
+  - $ref: rtc.yaml#
+
+properties:
+  compatible:
+    const: xlnx,zynqmp-rtc
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    minItems: 2
+
+  interrupt-names:
+    items:
+      - const: alarm
+      - const: sec
+
+  calibration:
+    description: |
+      calibration value for 1 sec period which will
+      be programmed directly to calibration register.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 0x1
+    maximum: 0x1FFFFF
+    default: 0x198233
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - interrupt-names
+
+additionalProperties: false
+
+examples:
+  - |
+    soc {
+      #address-cells = <2>;
+      #size-cells = <2>;
+
+      rtc: rtc@ffa60000 {
+        compatible = "xlnx,zynqmp-rtc";
+        reg = <0x0 0xffa60000 0x0 0x100>;
+        interrupt-parent = <&gic>;
+        interrupts = <0 26 4>, <0 27 4>;
+        interrupt-names = "alarm", "sec";
+        calibration = <0x198233>;
+      };
+    };
diff --git a/Documentation/devicetree/bindings/rtc/xlnx-rtc.txt b/Documentation/devicetree/bindings/rtc/xlnx-rtc.txt
deleted file mode 100644
index 0df6f016b1b771..00000000000000
--- a/Documentation/devicetree/bindings/rtc/xlnx-rtc.txt
+++ /dev/null
@@ -1,25 +0,0 @@
-* Xilinx Zynq Ultrascale+ MPSoC Real Time Clock
-
-RTC controller for the Xilinx Zynq MPSoC Real Time Clock
-Separate IRQ lines for seconds and alarm
-
-Required properties:
-- compatible: Should be "xlnx,zynqmp-rtc"
-- reg: Physical base address of the controller and length
-       of memory mapped region.
-- interrupts: IRQ lines for the RTC.
-- interrupt-names: interrupt line names eg. "sec" "alarm"
-
-Optional:
-- calibration: calibration value for 1 sec period which will
-		be programmed directly to calibration register
-
-Example:
-rtc: rtc@ffa60000 {
-	compatible = "xlnx,zynqmp-rtc";
-	reg = <0x0 0xffa60000 0x100>;
-	interrupt-parent = <&gic>;
-	interrupts = <0 26 4>, <0 27 4>;
-	interrupt-names = "alarm", "sec";
-	calibration = <0x198233>;
-};
-- 
2.32.0