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

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Date:   Thu, 24 Mar 2022 11:18:04 +0800
From:   Xiantao Hu <xt.hu@...lus1.com>
To:     krzk@...nel.org, wim@...ux-watchdog.org, p.zabel@...gutronix.de,
        linux-kernel@...r.kernel.org, linux-watchdog@...r.kernel.org,
        linux@...ck-us.net, robh+dt@...nel.org, devicetree@...r.kernel.org
Cc:     wells.lu@...plus.com, qinjian@...lus1.com,
        Xiantao Hu <xt.hu@...lus1.com>, Rob Herring <robh@...nel.org>
Subject: [PATCH v8 1/2] dt-bindings: watchdog: Add watchdog yaml file for Sunplus SP7021

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@...nel.org>
Reviewed-by: Rob Herring <robh@...nel.org>
Signed-off-by: Xiantao Hu <xt.hu@...lus1.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@...lus1.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@...00630 {
+        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@...lus1.com>
+L:	linux-watchdog@...r.kernel.org
+S:	Maintained
+F:	Documentation/devicetree/bindings/watchdog/sunplus,sp7021-wdt.yaml
+
 SUPERH
 M:	Yoshinori Sato <ysato@...rs.sourceforge.jp>
 M:	Rich Felker <dalias@...c.org>
-- 
2.33.1