[PATCH v8 1/2] dt-bindings: watchdog: Add watchdog yaml file for Sunplus SP7021

Xiantao Hu
2022-03-24T03:19:54Z

This adds the documentation for the devicetree bindings of the Sunplus
SP7021 watchdog driver, found from SP7021 SoCs and newer.

Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Xiantao Hu <xt.hu@cqplus1.com>
---
Changes in v8:
- Addressed all comments from Krzysztof Kozlowski.
1.fix the title.
2.fix the lowercase hex in examples.

.../bindings/watchdog/sunplus,sp7021-wdt.yaml | 47 +++++++++++++++++++
MAINTAINERS | 6 +++
2 files changed, 53 insertions(+)
create mode 100644 Documentation/devicetree/bindings/watchdog/sunplus,sp7021-wdt.yaml

diff --git a/Documentation/devicetree/bindings/watchdog/sunplus,sp7021-wdt.yaml b/Documentation/devicetree/bindings/watchdog/sunplus,sp7021-wdt.yaml
new file mode 100644
index 000000000..d90271013
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/sunplus,sp7021-wdt.yaml
@@ -0,0 +1,47 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) Sunplus Co., Ltd. 2021
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/watchdog/sunplus,sp7021-wdt.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sunplus SoCs Watchdog
+
+maintainers:
+ - XianTao Hu <xt.hu@cqplus1.com>
+
+allOf:
+ - $ref: watchdog.yaml#
+
+properties:
+ compatible:
+ const: sunplus,sp7021-wdt
+
+ reg:
+ items:
+ - description: watchdog registers regions
+ - description: miscellaneous control registers regions
+
+ clocks:
+ maxItems: 1
+
+ resets:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - resets
+
+additionalProperties: false
+
+examples:
+ - |
+ watchdog: watchdog@9c000630 {
+ compatible = "sunplus,sp7021-wdt";
+ reg = <0x9c000630 0x08>, <0x9c000274 0x04>;
+ clocks = <&clkc 0x24>;
+ resets = <&rstc 0x14>;
+ };
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index cd0f68d4a..efdc618a0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -18544,6 +18544,12 @@ S: Maintained
F: Documentation/devicetree/bindings/rtc/sunplus,sp7021-rtc.yaml
F: drivers/rtc/rtc-sunplus.c

+SUNPLUS WATCHDOG DRIVER
+M: Xiantao Hu <xt.hu@cqplus1.com>
+L: linux-watchdog@vger.kernel.org
+S: Maintained
+F: Documentation/devicetree/bindings/watchdog/sunplus,sp7021-wdt.yaml
+
SUPERH
M: Yoshinori Sato <ysato@users.sourceforge.jp>
M: Rich Felker <dalias@libc.org>
--
2.33.1