From: Wolfram Sang <wsa+renesas@sang-engineering.com>
Date: Thu, 9 Oct 2025 10:45:02 +0000 (+0200)
Subject: dt-bindings: watchdog: factor out RZ/V2H(P) watchdog
X-Git-Tag: v6.19-rc1~80^2~25
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fcba2855251ffc83ffbddc9e42a0430578691884;p=thirdparty%2Fkernel%2Flinux.git

dt-bindings: watchdog: factor out RZ/V2H(P) 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/V2H(P) 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: 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>
---

diff --git a/Documentation/devicetree/bindings/watchdog/renesas,r9a09g057-wdt.yaml b/Documentation/devicetree/bindings/watchdog/renesas,r9a09g057-wdt.yaml
new file mode 100644
index 0000000000000..099200c4f1364
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/renesas,r9a09g057-wdt.yaml
@@ -0,0 +1,99 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/watchdog/renesas,r9a09g057-wdt.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas RZ/V2H(P) Watchdog Timer (WDT) Controller
+
+maintainers:
+  - Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - renesas,r9a09g047-wdt # RZ/G3E
+              - renesas,r9a09g056-wdt # RZ/V2N
+          - const: renesas,r9a09g057-wdt # RZ/V2H(P)
+
+      - items:
+          - const: renesas,r9a09g087-wdt # RZ/N2H
+          - const: renesas,r9a09g077-wdt # RZ/T2H
+
+      - enum:
+          - renesas,r9a09g057-wdt    # RZ/V2H(P)
+          - renesas,r9a09g077-wdt    # RZ/T2H
+
+  reg:
+    minItems: 1
+    maxItems: 2
+
+  clocks:
+    minItems: 1
+    items:
+      - description: Register access clock
+      - description: Main clock
+
+  clock-names:
+    minItems: 1
+    items:
+      - const: pclk
+      - const: oscclk
+
+  power-domains:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
+  timeout-sec: true
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - power-domains
+
+allOf:
+  - $ref: watchdog.yaml#
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: renesas,r9a09g057-wdt
+    then:
+      properties:
+        reg:
+          maxItems: 1
+        clocks:
+          minItems: 2
+        clock-names:
+          minItems: 2
+    else:
+      properties:
+        clocks:
+          maxItems: 1
+        clock-names:
+          maxItems: 1
+        reg:
+          minItems: 2
+        resets: false
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/renesas,r9a09g057-cpg.h>
+
+    watchdog@11c00400 {
+            compatible = "renesas,r9a09g057-wdt";
+            reg = <0x11c00400 0x400>;
+            clocks = <&cpg CPG_MOD 0x4b>, <&cpg CPG_MOD 0x4c>;
+            clock-names = "pclk", "oscclk";
+            resets = <&cpg 0x75>;
+            power-domains = <&cpg>;
+    };
diff --git a/Documentation/devicetree/bindings/watchdog/renesas,wdt.yaml b/Documentation/devicetree/bindings/watchdog/renesas,wdt.yaml
index 2a15c012fd677..08ba128bf4420 100644
--- a/Documentation/devicetree/bindings/watchdog/renesas,wdt.yaml
+++ b/Documentation/devicetree/bindings/watchdog/renesas,wdt.yaml
@@ -51,38 +51,14 @@ properties:
               - renesas,r8a779h0-wdt     # R-Car V4M
           - const: renesas,rcar-gen4-wdt # R-Car Gen4
 
-      - items:
-          - enum:
-              - renesas,r9a09g047-wdt # RZ/G3E
-              - renesas,r9a09g056-wdt # RZ/V2N
-          - const: renesas,r9a09g057-wdt # RZ/V2H(P)
-
-      - enum:
-          - renesas,r9a09g057-wdt    # RZ/V2H(P)
-          - renesas,r9a09g077-wdt    # RZ/T2H
-
-      - items:
-          - const: renesas,r9a09g087-wdt # RZ/N2H
-          - const: renesas,r9a09g077-wdt # RZ/T2H
-
   reg:
-    minItems: 1
-    maxItems: 2
+    maxItems: 1
 
   interrupts:
     maxItems: 1
 
   clocks:
-    minItems: 1
-    items:
-      - description: Register access clock
-      - description: Main clock
-
-  clock-names:
-    minItems: 1
-    items:
-      - const: pclk
-      - const: oscclk
+    maxItems: 1
 
   power-domains:
     maxItems: 1
@@ -96,76 +72,13 @@ required:
   - compatible
   - reg
   - clocks
+  - interrupts
+  - power-domains
+  - resets
 
 allOf:
   - $ref: watchdog.yaml#
 
-  - if:
-      not:
-        properties:
-          compatible:
-            contains:
-              enum:
-                - renesas,r9a09g077-wdt
-    then:
-      required:
-        - power-domains
-        - resets
-
-  - if:
-      properties:
-        compatible:
-          contains:
-            enum:
-              - renesas,r9a09g057-wdt
-    then:
-      properties:
-        clocks:
-          minItems: 2
-        clock-names:
-          minItems: 2
-      required:
-        - clock-names
-    else:
-      properties:
-        clocks:
-          maxItems: 1
-
-  - if:
-      properties:
-        compatible:
-          contains:
-            enum:
-              - renesas,r9a09g057-wdt
-              - renesas,r9a09g077-wdt
-    then:
-      properties:
-        interrupts: false
-        interrupt-names: false
-    else:
-      required:
-        - interrupts
-
-  - if:
-      properties:
-        compatible:
-          contains:
-            const: renesas,r9a09g077-wdt
-    then:
-      properties:
-        resets: false
-        clock-names:
-          maxItems: 1
-        reg:
-          minItems: 2
-      required:
-        - clock-names
-        - power-domains
-    else:
-      properties:
-        reg:
-          maxItems: 1
-
 additionalProperties: false
 
 examples: