linux-kernel - [PATCH v6 3/5] dt-bindings: watchdog: add new binding for meson secure watchdog

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Message-ID: <1578973527-4759-4-git-send-email-xingyu.chen@amlogic.com>
Date:   Tue, 14 Jan 2020 11:45:25 +0800
From:   Xingyu Chen <xingyu.chen@...ogic.com>
To:     Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Kevin Hilman <khilman@...libre.com>,
        Neil Armstrong <narmstrong@...libre.com>
CC:     Xingyu Chen <xingyu.chen@...ogic.com>,
        Rob Herring <robh+dt@...nel.org>,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Qianggui Song <qianggui.song@...ogic.com>,
        Jianxin Pan <jianxin.pan@...ogic.com>,
        Jian Hu <jian.hu@...ogic.com>,
        <linux-watchdog@...r.kernel.org>,
        <linux-amlogic@...ts.infradead.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>
Subject: [PATCH v6 3/5] dt-bindings: watchdog: add new binding for meson secure watchdog

The binding targets the Meson-A/C series compatible SoCs, in which the
watchdog registers are in secure world.

Signed-off-by: Xingyu Chen <xingyu.chen@...ogic.com>
---
 .../bindings/watchdog/amlogic,meson-sec-wdt.yaml   | 40 ++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/watchdog/amlogic,meson-sec-wdt.yaml

diff --git a/Documentation/devicetree/bindings/watchdog/amlogic,meson-sec-wdt.yaml b/Documentation/devicetree/bindings/watchdog/amlogic,meson-sec-wdt.yaml
new file mode 100644
index 00000000..8e9d62a
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/amlogic,meson-sec-wdt.yaml
@@ -0,0 +1,40 @@
+# SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+# Copyright (c) 2019 Amlogic, Inc
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/power/amlogic,meson-sec-wdt.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Amlogic Meson Secure Watchdog Timer
+
+maintainers:
+  - Xingyu Chen <xingyu.chen@...ogic.com>
+
+description: |+
+  Secure Watchdog Timer used in Meson-A/C series Compatible SoCs,
+  and its device node must be the child node of secure-monitor.
+
+properties:
+  compatible:
+    enum:
+      - amlogic,meson-sec-wdt
+
+  timeout-sec:
+    minimum: 1
+    maximum: 65
+    description:
+      Watchdog timeout values (in seconds)
+
+required:
+  - compatible
+
+examples:
+  - |
+    secure-monitor {
+        compatible = "amlogic,meson-gxbb-sm";
+
+        watchdog {
+            compatible = "amlogic,meson-sec-wdt";
+            timeout-sec = <60>;
+        };
+    };
-- 
2.7.4