dt-bindings: watchdog: factor out RZ/G2L watchdog

Renesas created different watchdog IPs but they are all handled in the
same binding documentation. This leads to a lot of conditional handling
which makes it unnecessarily hard to add new items. Factor out the
RZ/G2L watchdog to make handling easier.

Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

2 files changed, 112 insertions, 44 deletions

diff --git a/Documentation/devicetree/bindings/watchdog/renesas,rzg2l-wdt.yaml b/Documentation/devicetree/bindings/watchdog/renesas,rzg2l-wdt.yaml
new file mode 100644
index 000000000000..a4d06c9c8b86
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/renesas,rzg2l-wdt.yaml
@@ -0,0 +1,111 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/watchdog/renesas,rzg2l-wdt.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas RZ/G2L Watchdog Timer (WDT) Controller
+
+maintainers:
+  - Biju Das <biju.das.jz@bp.renesas.com>
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - renesas,r9a07g043-wdt    # RZ/G2UL and RZ/Five
+              - renesas,r9a07g044-wdt    # RZ/G2{L,LC}
+              - renesas,r9a07g054-wdt    # RZ/V2L
+              - renesas,r9a08g045-wdt    # RZ/G3S
+          - const: renesas,rzg2l-wdt
+
+      - items:
+          - const: renesas,r9a09g011-wdt # RZ/V2M
+          - const: renesas,rzv2m-wdt     # RZ/V2M
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    minItems: 1
+    items:
+      - description: Timeout
+      - description: Parity error
+
+  interrupt-names:
+    minItems: 1
+    items:
+      - const: wdt
+      - const: perrout
+
+  clocks:
+    items:
+      - description: Register access clock
+      - description: Main clock
+
+  clock-names:
+    items:
+      - const: pclk
+      - const: oscclk
+
+  power-domains:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
+  timeout-sec: true
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - power-domains
+  - resets
+
+allOf:
+  - $ref: watchdog.yaml#
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: renesas,rzg2l-wdt
+    then:
+      properties:
+        interrupts:
+          minItems: 2
+        interrupt-names:
+          minItems: 2
+      required:
+        - interrupt-names
+    else:
+      properties:
+        interrupts:
+          maxItems: 1
+        interrupt-names:
+          maxItems: 1
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/r9a07g044-cpg.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    watchdog@12800800 {
+            compatible = "renesas,r9a07g044-wdt",
+                         "renesas,rzg2l-wdt";
+            reg = <0x12800800 0x400>;
+            clocks = <&cpg CPG_MOD R9A07G044_WDT0_PCLK>,
+                     <&cpg CPG_MOD R9A07G044_WDT0_CLK>;
+            clock-names = "pclk", "oscclk";
+            interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>,
+                         <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>;
+            interrupt-names = "wdt", "perrout";
+            resets = <&cpg R9A07G044_WDT0_PRESETN>;
+            power-domains = <&cpg>;
+    };
diff --git a/Documentation/devicetree/bindings/watchdog/renesas,wdt.yaml b/Documentation/devicetree/bindings/watchdog/renesas,wdt.yaml
index 12ba07781763..2a15c012fd67 100644
--- a/Documentation/devicetree/bindings/watchdog/renesas,wdt.yaml
+++ b/Documentation/devicetree/bindings/watchdog/renesas,wdt.yaml
@@ -15,19 +15,6 @@ properties:
     oneOf:
       - items:
           - enum:
-              - renesas,r9a07g043-wdt    # RZ/G2UL and RZ/Five
-              - renesas,r9a07g044-wdt    # RZ/G2{L,LC}
-              - renesas,r9a07g054-wdt    # RZ/V2L
-              - renesas,r9a08g045-wdt    # RZ/G3S
-          - const: renesas,rzg2l-wdt
-
-      - items:
-          - enum:
-              - renesas,r9a09g011-wdt    # RZ/V2M
-          - const: renesas,rzv2m-wdt     # RZ/V2M
-
-      - items:
-          - enum:
               - renesas,r8a7742-wdt      # RZ/G1H
               - renesas,r8a7743-wdt      # RZ/G1M
               - renesas,r8a7744-wdt      # RZ/G1N
@@ -83,16 +70,7 @@ properties:
     maxItems: 2
 
   interrupts:
-    minItems: 1
-    items:
-      - description: Timeout
-      - description: Parity error
-
-  interrupt-names:
-    minItems: 1
-    items:
-      - const: wdt
-      - const: perrout
+    maxItems: 1
 
   clocks:
     minItems: 1
@@ -140,8 +118,6 @@ allOf:
           contains:
             enum:
               - renesas,r9a09g057-wdt
-              - renesas,rzg2l-wdt
-              - renesas,rzv2m-wdt
     then:
       properties:
         clocks:
@@ -160,25 +136,6 @@ allOf:
         compatible:
           contains:
             enum:
-              - renesas,rzg2l-wdt
-    then:
-      properties:
-        interrupts:
-          minItems: 2
-        interrupt-names:
-          minItems: 2
-      required:
-        - interrupt-names
-    else:
-      properties:
-        interrupts:
-          maxItems: 1
-
-  - if:
-      properties:
-        compatible:
-          contains:
-            enum:
               - renesas,r9a09g057-wdt
               - renesas,r9a09g077-wdt
     then: