[PATCH V2 1/3] dt-bindings: watchdog: Add support for Andes ATCWDT200
From: CL Wang <cl634@andestech.com>
Date: 2026-01-15 08:15:27
Also in:
linux-watchdog, lkml
Subsystem:
andes atcwdt200 watchdog driver, open firmware and flattened device tree bindings, the rest, watchdog device drivers · Maintainers:
CL Wang, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds, Wim Van Sebroeck, Guenter Roeck
Add the devicetree binding documentation for the Andes ATCWDT200
watchdog timer.
ATCWDT200 is the IP name, which is embedded in AndesCore-based
platforms or SoCs such as AE350 and Qilai.
Signed-off-by: CL Wang <cl634@andestech.com>
---
Changes in v2:
- Drop redundant text "including supported properties..." from the
commit message.
- Clarify the relationship between ATCWDT200 IP and SoCs (AE350/Qilai)
in the commit message.
- Add missing type definition ($ref: uint32), enum constraint, and
description for 'andestech,clock-source' property.
---
.../watchdog/andestech,ae350-wdt.yaml | 53 +++++++++++++++++++
1 file changed, 53 insertions(+)
create mode 100644 Documentation/devicetree/bindings/watchdog/andestech,ae350-wdt.yaml
diff --git a/Documentation/devicetree/bindings/watchdog/andestech,ae350-wdt.yaml b/Documentation/devicetree/bindings/watchdog/andestech,ae350-wdt.yaml
new file mode 100644
index 000000000000..f1107c552788
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/andestech,ae350-wdt.yaml@@ -0,0 +1,53 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/watchdog/andestech,ae350-wdt.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Andes ATCWDT200 Watchdog Timer + +maintainers: + - CL Wang <cl634@andestech.com> + +allOf: + - $ref: watchdog.yaml# + +properties: + compatible: + oneOf: + - items: + - enum: + - andestech,qilai-wdt + - const: andestech,ae350-wdt + - const: andestech,ae350-wdt + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + andestech,clock-source: + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1] + description: | + Select the clock source for the watchdog timer. + 0 - External clock + 1 - P clock + +required: + - compatible + - reg + - clocks + - andestech,clock-source + +unevaluatedProperties: false + +examples: + - | + watchdog@f0500000 { + compatible = "andestech,ae350-wdt"; + reg = <0xf0500000 0x20>; + clocks = <&clk_wdt>; + andestech,clock-source = <0>; + };
--
2.34.1