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Message-ID: <20230801044623.9275-1-bbhushan2@marvell.com>
Date: Tue, 1 Aug 2023 10:16:22 +0530
From: Bharat Bhushan <bbhushan2@...vell.com>
To: <wim@...ux-watchdog.org>, <linux@...ck-us.net>,
<robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
<conor+dt@...nel.org>, <linux-watchdog@...r.kernel.org>,
<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<sgoutham@...vell.com>
CC: Bharat Bhushan <bbhushan2@...vell.com>
Subject: [PATCH 1/2 v10] dt-bindings: watchdog: marvell GTI system watchdog driver
Add binding documentation for the Marvell GTI system
watchdog driver.
Signed-off-by: Bharat Bhushan <bbhushan2@...vell.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
v10:
- Added Reviewed by Krzysztof Kozlowski
v9:
- Rename binding file name from marvell,octeontx2-wdt.yaml to
marvell,cn10624-wdt.yaml
- "allOf: - $ref: watchdog.yaml#" moved after maintainers
- clocks have maxItems rather than minItems
- Added "clock-names" name defination
- Added Fallback to compatible
v8:
- Compatible name as per soc name
.../watchdog/marvell,cn10624-wdt.yaml | 83 +++++++++++++++++++
1 file changed, 83 insertions(+)
create mode 100644 Documentation/devicetree/bindings/watchdog/marvell,cn10624-wdt.yaml
diff --git a/Documentation/devicetree/bindings/watchdog/marvell,cn10624-wdt.yaml b/Documentation/devicetree/bindings/watchdog/marvell,cn10624-wdt.yaml
new file mode 100644
index 000000000000..1b583f232e53
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/marvell,cn10624-wdt.yaml
@@ -0,0 +1,83 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/watchdog/marvell,cn10624-wdt.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Marvell Global Timer (GTI) system watchdog
+
+maintainers:
+ - Bharat Bhushan <bbhushan2@...vell.com>
+
+allOf:
+ - $ref: watchdog.yaml#
+
+properties:
+ compatible:
+ oneOf:
+ - enum:
+ - marvell,cn9670-wdt
+ - marvell,cn10624-wdt
+
+ - items:
+ - enum:
+ - marvell,cn9880-wdt
+ - marvell,cnf9535-wdt
+ - const: marvell,cn9670-wdt
+
+ - items:
+ - enum:
+ - marvell,cn10308-wdt
+ - marvell,cnf10518-wdt
+ - const: marvell,cn10624-wdt
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ clock-names:
+ items:
+ - const: refclk
+
+ marvell,wdt-timer-index:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 63
+ description:
+ An SoC have many timers (up to 64), firmware can reserve one or more timer
+ for some other use case and configures one of the global timer as watchdog
+ timer. Firmware will update this field with the timer number configured
+ as watchdog timer.
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - clock-names
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ soc {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ watchdog@...000040000 {
+ compatible = "marvell,cn9670-wdt";
+ reg = <0x00008020 0x00040000 0x00000000 0x00020000>;
+ interrupts = <GIC_SPI 38 IRQ_TYPE_EDGE_RISING>;
+ clocks = <&sclk>;
+ clock-names = "refclk";
+ marvell,wdt-timer-index = <63>;
+ };
+ };
+
+...
--
2.17.1
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