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Thu, 20 Apr 2023 03:42:45 -0700 Received: from xhdsneeli40.xilinx.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server id 15.1.2375.34 via Frontend Transport; Thu, 20 Apr 2023 05:42:41 -0500 From: Srinivas Neeli To: , , , , , , CC: , , , , , , , Subject: [PATCH V4 2/4] dt-bindings: watchdog: xlnx,versal-wwdt: Add versal watchdog Date: Thu, 20 Apr 2023 16:12:29 +0530 Message-ID: <20230420104231.2243079-3-srinivas.neeli@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230420104231.2243079-1-srinivas.neeli@amd.com> References: <20230420104231.2243079-1-srinivas.neeli@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1NAM11FT097:EE_|DM4PR12MB8522:EE_ X-MS-Office365-Filtering-Correlation-Id: 8bdea296-bc01-4c8e-1be6-08db418bfad3 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17; CTRY:US; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:SATLEXMB03.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230028)(4636009)(396003)(376002)(136003)(39860400002)(346002)(451199021)(40470700004)(36840700001)(46966006)(2906002)(44832011)(36860700001)(2616005)(40460700003)(478600001)(6666004)(82310400005)(966005)(86362001)(26005)(1076003)(36756003)(186003)(40480700001)(336012)(41300700001)(426003)(82740400003)(81166007)(54906003)(356005)(8676002)(8936002)(47076005)(4326008)(83380400001)(70586007)(70206006)(110136005)(316002)(5660300002)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 Apr 2023 10:42:46.5893 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8bdea296-bc01-4c8e-1be6-08db418bfad3 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT097.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB8522 Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org Versal watchdog IP uses window watchdog mode. Window watchdog timer(WWDT) contains closed(first) and open(second) window with 32 bit width. Write to the watchdog timer within predefined window periods of time. This means a period that is not too soon and a period that is not too late. Add devicetree bindings for versal window watchdog device. Signed-off-by: Srinivas Neeli Reviewed-by: Krzysztof Kozlowski Reviewed-by: Guenter Roeck --- Changes in V4: - Updated commit subject(removed redundant "bindings"). - Updated commit descriptioni(removed "this patch"). - Updated watchdog.yaml reference to local. Changes in V3: - Removed xlnx,close_percent property. Changes in V2: - Added watchdog ref - Removed timeout-sec property - Used 4 spaces for example indentation. --- .../bindings/watchdog/xlnx,versal-wwdt.yaml | 50 +++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 Documentation/devicetree/bindings/watchdog/xlnx,versal-wwdt.yaml diff --git a/Documentation/devicetree/bindings/watchdog/xlnx,versal-wwdt.yaml b/Documentation/devicetree/bindings/watchdog/xlnx,versal-wwdt.yaml new file mode 100644 index 000000000000..14b069599740 --- /dev/null +++ b/Documentation/devicetree/bindings/watchdog/xlnx,versal-wwdt.yaml @@ -0,0 +1,50 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/watchdog/xlnx,versal-wwdt.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Xilinx Versal window watchdog timer controller + +maintainers: + - Neeli Srinivas + +description: + Versal watchdog intellectual property uses window watchdog mode. + Window watchdog timer(WWDT) contains closed(first) and open(second) + window with 32 bit width. Write to the watchdog timer within + predefined window periods of time. This means a period that is not + too soon and a period that is not too late. The WWDT has to be + restarted within the open window time. If software tries to restart + WWDT outside of the open window time period, it generates a reset. + +allOf: + - $ref: watchdog.yaml# + +properties: + compatible: + enum: + - xlnx,versal-wwdt + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + +required: + - compatible + - reg + - clocks + +unevaluatedProperties: false + +examples: + - | + watchdog@fd4d0000 { + compatible = "xlnx,versal-wwdt"; + reg = <0xfd4d0000 0x10000>; + clocks = <&clock25>; + timeout-sec = <30>; + }; +... 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Thu, 20 Apr 2023 05:42:49 -0500 From: Srinivas Neeli To: , , , , , , CC: , , , , , , , Subject: [PATCH V4 4/4] MAINTAINERS: Add support for Xilinx versal watchdog Date: Thu, 20 Apr 2023 16:12:31 +0530 Message-ID: <20230420104231.2243079-5-srinivas.neeli@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230420104231.2243079-1-srinivas.neeli@amd.com> References: <20230420104231.2243079-1-srinivas.neeli@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000C97E:EE_|PH7PR12MB8107:EE_ X-MS-Office365-Filtering-Correlation-Id: d5cab9c0-651e-4ddc-7210-08db418bffa0 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17; 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Signed-off-by: Srinivas Neeli Reviewed-by: Guenter Roeck --- Changes in V4: -None Changes in V3: -None --- MAINTAINERS | 2 ++ 1 file changed, 2 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 327901c9f1d1..388305608418 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -23148,8 +23148,10 @@ M: Srinivas Neeli R: Shubhrajyoti Datta R: Michal Simek S: Maintained +F: Documentation/devicetree/bindings/watchdog/xlnx,versal-wwdt.yaml F: Documentation/devicetree/bindings/watchdog/xlnx,xps-timebase-wdt.yaml F: drivers/watchdog/of_xilinx_wdt.c +F: drivers/watchdog/xilinx_wwdt.c XILINX XDMA DRIVER M: Lizhi Hou