[PATCH 2/4] dt-bindings: watchdog: factor out RZ/N1 watchdog
From: Wolfram Sang <wsa+renesas@sang-engineering.com>
Date: 2025-09-26 11:22:28
Also in:
linux-renesas-soc, linux-watchdog
Subsystem:
open firmware and flattened device tree bindings, the rest, watchdog device drivers · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds, Wim Van Sebroeck, Guenter Roeck
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/N1 watchdog to make handling easier. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> --- .../bindings/watchdog/renesas,rzn1-wdt.yaml | 49 +++++++++++++++++++ .../bindings/watchdog/renesas,wdt.yaml | 6 --- 2 files changed, 49 insertions(+), 6 deletions(-) create mode 100644 Documentation/devicetree/bindings/watchdog/renesas,rzn1-wdt.yaml
diff --git a/Documentation/devicetree/bindings/watchdog/renesas,rzn1-wdt.yaml b/Documentation/devicetree/bindings/watchdog/renesas,rzn1-wdt.yaml
new file mode 100644
index 000000000000..01eab6cc1110
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/renesas,rzn1-wdt.yaml@@ -0,0 +1,49 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/watchdog/renesas,rzn1-wdt.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Renesas RZ/N1 Watchdog Timer (WDT) Controller + +maintainers: + - Wolfram Sang <wsa+renesas@sang-engineering.com> + +properties: + compatible: + items: + - enum: + - renesas,r9a06g032-wdt # RZ/N1D + - const: renesas,rzn1-wdt # RZ/N1 + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + maxItems: 1 + +required: + - compatible + - reg + - interrupts + - clocks + +allOf: + - $ref: watchdog.yaml# + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/r9a06g032-sysctrl.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + + wdt0: watchdog@40008000 { + compatible = "renesas,r9a06g032-wdt", "renesas,rzn1-wdt"; + reg = <0x40008000 0x1000>; + interrupts = <GIC_SPI 73 IRQ_TYPE_EDGE_RISING>; + clocks = <&sysctrl R9A06G032_CLK_WATCHDOG>; + };
diff --git a/Documentation/devicetree/bindings/watchdog/renesas,wdt.yaml b/Documentation/devicetree/bindings/watchdog/renesas,wdt.yaml
index 8a25e0c6271f..12ba07781763 100644
--- a/Documentation/devicetree/bindings/watchdog/renesas,wdt.yaml
+++ b/Documentation/devicetree/bindings/watchdog/renesas,wdt.yaml@@ -13,11 +13,6 @@ maintainers: properties: compatible: oneOf: - - items: - - enum: - - renesas,r9a06g032-wdt # RZ/N1D - - const: renesas,rzn1-wdt # RZ/N1 - - items: - enum: - renesas,r9a07g043-wdt # RZ/G2UL and RZ/Five
@@ -134,7 +129,6 @@ allOf: contains: enum: - renesas,r9a09g077-wdt - - renesas,rzn1-wdt then: required: - power-domains
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2.47.2