[PATCH v2] dt-bindings: timer: actions,owl-timer: convert to YAML

[Ivaylo Ivanov <ivo.ivanov.ivanov1@gmail.com>]

Convert the Actions Semi Owl timer bindings to DT schema.

Changes during conversion:
 - Add a description
 - Add "clocks" as a required property, since the driver searches for it
 - Correct the given example according to owl-s500.dtsi

Signed-off-by: Ivaylo Ivanov <ivo.ivanov.ivanov1@gmail.com>
---
v2: update commit message to be accurate (Krzysztof)
v2: don't preserve formatting in the description (Krzysztof)
v2: add allOf:if:then block constraining per variant (Krzysztof)
v2: add a blank line after additionalProperties (Krzysztof)
---
 .../bindings/timer/actions,owl-timer.txt      |  21 ----
 .../bindings/timer/actions,owl-timer.yaml     | 107 ++++++++++++++++++
 MAINTAINERS                                   |   2 +-
 3 files changed, 108 insertions(+), 22 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/timer/actions,owl-timer.txt
 create mode 100644 Documentation/devicetree/bindings/timer/actions,owl-timer.yaml

diff --git a/Documentation/devicetree/bindings/timer/actions,owl-timer.txt b/Documentation/devicetree/bindings/timer/actions,owl-timer.txt
deleted file mode 100644
index 977054f87..000000000
--- a/Documentation/devicetree/bindings/timer/actions,owl-timer.txt
+++ /dev/null
@@ -1,21 +0,0 @@
-Actions Semi Owl Timer
-
-Required properties:
-- compatible      :  "actions,s500-timer" for S500
-                     "actions,s700-timer" for S700
-                     "actions,s900-timer" for S900
-- reg             :  Offset and length of the register set for the device.
-- interrupts      :  Should contain the interrupts.
-- interrupt-names :  Valid names are: "2hz0", "2hz1",
-                                      "timer0", "timer1", "timer2", "timer3"
-                     See ../resource-names.txt
-
-Example:
-
-		timer@b0168000 {
-			compatible = "actions,s500-timer";
-			reg = <0xb0168000 0x100>;
-			interrupts = <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>,
-			             <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>;
-			interrupt-names = "timer0", "timer1";
-		};
diff --git a/Documentation/devicetree/bindings/timer/actions,owl-timer.yaml b/Documentation/devicetree/bindings/timer/actions,owl-timer.yaml
new file mode 100644
index 000000000..646c554a3
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/actions,owl-timer.yaml
@@ -0,0 +1,107 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/timer/actions,owl-timer.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Actions Semi Owl timer
+
+maintainers:
+  - Andreas Färber <afaerber@suse.de>
+
+description:
+  Actions Semi Owl SoCs provide 32bit and 2Hz timers.
+  The 32bit timers support dynamic irq, as well as one-shot mode.
+
+properties:
+  compatible:
+    enum:
+      - actions,s500-timer
+      - actions,s700-timer
+      - actions,s900-timer
+
+  clocks:
+    maxItems: 1
+
+  interrupts:
+    minItems: 1
+    maxItems: 6
+
+  interrupt-names:
+    minItems: 1
+    maxItems: 6
+    items:
+      enum:
+        - 2hz0
+        - 2hz1
+        - timer0
+        - timer1
+        - timer2
+        - timer3
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - clocks
+  - interrupts
+  - interrupt-names
+  - reg
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - actions,s500-timer
+    then:
+      properties:
+        interrupts:
+          minItems: 4
+          maxItems: 4
+        interrupt-names:
+          items:
+            - const: 2hz0
+            - const: 2hz1
+            - const: timer0
+            - const: timer1
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - actions,s700-timer
+              - actions,s900-timer
+    then:
+      properties:
+        interrupts:
+          minItems: 1
+          maxItems: 1
+        interrupt-names:
+          items:
+            - const: timer1
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    soc {
+      #address-cells = <1>;
+      #size-cells = <1>;
+      timer@b0168000 {
+        compatible = "actions,s500-timer";
+        reg = <0xb0168000 0x100>;
+        clocks = <&hosc>;
+        interrupts = <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>;
+        interrupt-names = "2hz0", "2hz1", "timer0", "timer1";
+      };
+    };
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index 5f34d168b..76ea65128 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2024,7 +2024,7 @@ F:	Documentation/devicetree/bindings/mmc/owl-mmc.yaml
 F:	Documentation/devicetree/bindings/net/actions,owl-emac.yaml
 F:	Documentation/devicetree/bindings/pinctrl/actions,*
 F:	Documentation/devicetree/bindings/power/actions,owl-sps.txt
-F:	Documentation/devicetree/bindings/timer/actions,owl-timer.txt
+F:	Documentation/devicetree/bindings/timer/actions,owl-timer.yaml
 F:	arch/arm/boot/dts/actions/
 F:	arch/arm/mach-actions/
 F:	arch/arm64/boot/dts/actions/
-- 
2.43.0