Convert the Renesas Watchdog Timer (WDT) Controller Device Tree binding
documentation to json-schema.
Add missing "renesas,r8a77980-wdt" compatible value.
Document missing properties.
Update the example to match reality.
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
.../bindings/watchdog/renesas,wdt.txt | 50 ---------
.../bindings/watchdog/renesas,wdt.yaml | 100 ++++++++++++++++++
2 files changed, 100 insertions(+), 50 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/watchdog/renesas,wdt.txt
create mode 100644 Documentation/devicetree/bindings/watchdog/renesas,wdt.yaml
diff --git a/Documentation/devicetree/bindings/watchdog/renesas,wdt.txt b/Documentation/devicetree/bindings/watchdog/renesas,wdt.txt
deleted file mode 100644
index 79b3c62f183d26dc..0000000000000000
--- a/Documentation/devicetree/bindings/watchdog/renesas,wdt.txt
+++ /dev/null
@@ -1,50 +0,0 @@
-Renesas Watchdog Timer (WDT) Controller
-
-Required properties:
- - compatible : Must be "renesas,<soctype>-wdt", followed by a generic
- fallback compatible string when compatible with the generic
- version.
- Examples with soctypes are:
- - "renesas,r8a7743-wdt" (RZ/G1M)
- - "renesas,r8a7744-wdt" (RZ/G1N)
- - "renesas,r8a7745-wdt" (RZ/G1E)
- - "renesas,r8a77470-wdt" (RZ/G1C)
- - "renesas,r8a774a1-wdt" (RZ/G2M)
- - "renesas,r8a774b1-wdt" (RZ/G2N)
- - "renesas,r8a774c0-wdt" (RZ/G2E)
- - "renesas,r8a7790-wdt" (R-Car H2)
- - "renesas,r8a7791-wdt" (R-Car M2-W)
- - "renesas,r8a7792-wdt" (R-Car V2H)
- - "renesas,r8a7793-wdt" (R-Car M2-N)
- - "renesas,r8a7794-wdt" (R-Car E2)
- - "renesas,r8a7795-wdt" (R-Car H3)
- - "renesas,r8a7796-wdt" (R-Car M3-W)
- - "renesas,r8a77961-wdt" (R-Car M3-W+)
- - "renesas,r8a77965-wdt" (R-Car M3-N)
- - "renesas,r8a77970-wdt" (R-Car V3M)
- - "renesas,r8a77990-wdt" (R-Car E3)
- - "renesas,r8a77995-wdt" (R-Car D3)
- - "renesas,r7s72100-wdt" (RZ/A1)
- - "renesas,r7s9210-wdt" (RZ/A2)
- The generic compatible string must be:
- - "renesas,rza-wdt" for RZ/A
- - "renesas,rcar-gen2-wdt" for R-Car Gen2 and RZ/G1
- - "renesas,rcar-gen3-wdt" for R-Car Gen3 and RZ/G2
-
-- reg : Should contain WDT registers location and length
-- clocks : the clock feeding the watchdog timer.
-
-Optional properties:
-- timeout-sec : Contains the watchdog timeout in seconds
-- power-domains : the power domain the WDT belongs to
-- interrupts: Some WDTs have an interrupt when used in interval timer mode
-
-Examples:
-
- wdt0: watchdog@e6020000 {
- compatible = "renesas,r8a7795-wdt", "renesas,rcar-gen3-wdt";
- reg = <0 0xe6020000 0 0x0c>;
- clocks = <&cpg CPG_MOD 402>;
- power-domains = <&cpg>;
- timeout-sec = <60>;
- };
diff --git a/Documentation/devicetree/bindings/watchdog/renesas,wdt.yaml b/Documentation/devicetree/bindings/watchdog/renesas,wdt.yaml
new file mode 100644
index 0000000000000000..27e8c4accd67bfff
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/renesas,wdt.yaml
@@ -0,0 +1,100 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/watchdog/renesas,wdt.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas Watchdog Timer (WDT) Controller
+
+maintainers:
+ - Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
+ - Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
+
+allOf:
+ - $ref: "watchdog.yaml#"
+
+properties:
+ compatible:
+ oneOf:
+ - items:
+ - enum:
+ - renesas,r7s72100-wdt # RZ/A1
+ - renesas,r7s9210-wdt # RZ/A2
+ - const: renesas,rza-wdt # RZ/A
+
+ - items:
+ - enum:
+ - renesas,r8a7743-wdt # RZ/G1M
+ - renesas,r8a7744-wdt # RZ/G1N
+ - renesas,r8a7745-wdt # RZ/G1E
+ - renesas,r8a77470-wdt # RZ/G1C
+ - renesas,r8a7790-wdt # R-Car H2
+ - renesas,r8a7791-wdt # R-Car M2-W
+ - renesas,r8a7792-wdt # R-Car V2H
+ - renesas,r8a7793-wdt # R-Car M2-N
+ - renesas,r8a7794-wdt # R-Car E2
+ - const: renesas,rcar-gen2-wdt # R-Car Gen2 and RZ/G1
+
+ - items:
+ - enum:
+ - renesas,r8a774a1-wdt # RZ/G2M
+ - renesas,r8a774b1-wdt # RZ/G2N
+ - renesas,r8a774c0-wdt # RZ/G2E
+ - renesas,r8a7795-wdt # R-Car H3
+ - renesas,r8a7796-wdt # R-Car M3-W
+ - renesas,r8a77961-wdt # R-Car M3-W+
+ - renesas,r8a77965-wdt # R-Car M3-N
+ - renesas,r8a77970-wdt # R-Car V3M
+ - renesas,r8a77980-wdt # R-Car V3H
+ - renesas,r8a77990-wdt # R-Car E3
+ - renesas,r8a77995-wdt # R-Car D3
+ - const: renesas,rcar-gen3-wdt # R-Car Gen3 and RZ/G2
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ power-domains:
+ maxItems: 1
+
+ resets:
+ maxItems: 1
+
+ timeout-sec: true
+
+required:
+ - compatible
+ - reg
+ - clocks
+
+if:
+ not:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - renesas,rza-wdt
+then:
+ required:
+ - power-domains
+ - resets
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/r8a7795-cpg-mssr.h>
+ #include <dt-bindings/power/r8a7795-sysc.h>
+ wdt0: watchdog@e6020000 {
+ compatible = "renesas,r8a7795-wdt", "renesas,rcar-gen3-wdt";
+ reg = <0xe6020000 0x0c>;
+ clocks = <&cpg CPG_MOD 402>;
+ power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
+ resets = <&cpg 402>;
+ timeout-sec = <60>;
+ };
--
2.17.1
