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Subject[PATCH v4 1/7] dt-bindings: watchdog: Convert DW WDT binding to DT schema
Date
Modern device tree bindings are supposed to be created as YAML-files
in accordance with dt-schema. This commit replaces the DW Watchdog
legacy bare text bindings with YAML file. As before the binding states
that the corresponding dts node is supposed to have a registers
range, a watchdog timer references clock source, optional reset line and
pre-timeout interrupt.

Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Cc: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: linux-mips@vger.kernel.org

---

Changelog v2:
- Rearrange SoBs.
- Discard BE copyright header.
- Replace "additionalProperties: false" with "unevaluatedProperties: false"
property.
- Discard interrupts property from the required properties list.
- Remove a label definition from the binding example.
- Move the asynchronous APB3 clock support into a dedicated patch.
---
.../devicetree/bindings/watchdog/dw_wdt.txt | 24 ---------
.../bindings/watchdog/snps,dw-wdt.yaml | 50 +++++++++++++++++++
2 files changed, 50 insertions(+), 24 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/watchdog/dw_wdt.txt
create mode 100644 Documentation/devicetree/bindings/watchdog/snps,dw-wdt.yaml

diff --git a/Documentation/devicetree/bindings/watchdog/dw_wdt.txt b/Documentation/devicetree/bindings/watchdog/dw_wdt.txt
deleted file mode 100644
index eb0914420c7c..000000000000
--- a/Documentation/devicetree/bindings/watchdog/dw_wdt.txt
+++ /dev/null
@@ -1,24 +0,0 @@
-Synopsys Designware Watchdog Timer
-
-Required Properties:
-
-- compatible : Should contain "snps,dw-wdt"
-- reg : Base address and size of the watchdog timer registers.
-- clocks : phandle + clock-specifier for the clock that drives the
- watchdog timer.
-
-Optional Properties:
-
-- interrupts : The interrupt used for the watchdog timeout warning.
-- resets : phandle pointing to the system reset controller with
- line index for the watchdog.
-
-Example:
-
- watchdog0: wd@ffd02000 {
- compatible = "snps,dw-wdt";
- reg = <0xffd02000 0x1000>;
- interrupts = <0 171 4>;
- clocks = <&per_base_clk>;
- resets = <&rst WDT0_RESET>;
- };
diff --git a/Documentation/devicetree/bindings/watchdog/snps,dw-wdt.yaml b/Documentation/devicetree/bindings/watchdog/snps,dw-wdt.yaml
new file mode 100644
index 000000000000..4f6944756ab4
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/snps,dw-wdt.yaml
@@ -0,0 +1,50 @@
+# SPDX-License-Identifier: GPL-2.0-only
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/watchdog/snps,dw-wdt.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Synopsys Designware Watchdog Timer
+
+allOf:
+ - $ref: "watchdog.yaml#"
+
+maintainers:
+ - Jamie Iles <jamie@jamieiles.com>
+
+properties:
+ compatible:
+ const: snps,dw-wdt
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ description: DW Watchdog pre-timeout interrupt
+ maxItems: 1
+
+ clocks:
+ items:
+ - description: Watchdog timer reference clock
+
+ resets:
+ description: Phandle to the DW Watchdog reset lane
+ maxItems: 1
+
+unevaluatedProperties: false
+
+required:
+ - compatible
+ - reg
+ - clocks
+
+examples:
+ - |
+ watchdog@ffd02000 {
+ compatible = "snps,dw-wdt";
+ reg = <0xffd02000 0x1000>;
+ interrupts = <0 171 4>;
+ clocks = <&per_base_clk>;
+ resets = <&wdt_rst>;
+ };
+...
--
2.26.2
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