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Fri, 11 Dec 2020 21:56:21 +0000 From: Rasmus Villemoes To: linux-rtc@vger.kernel.org, Alexandre Belloni Cc: linux-kernel@vger.kernel.org, Rob Herring , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , Qiang Zhao , Bruno Thomsen , Rasmus Villemoes Subject: [PATCH v2 1/3] dt-bindings: rtc: add reset-source property Date: Fri, 11 Dec 2020 22:56:09 +0100 Message-Id: <20201211215611.24392-2-rasmus.villemoes@prevas.dk> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20201211215611.24392-1-rasmus.villemoes@prevas.dk> References: <20201204092752.GE74177@piout.net> <20201211215611.24392-1-rasmus.villemoes@prevas.dk> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [5.186.115.188] X-ClientProxiedBy: AM6P192CA0068.EURP192.PROD.OUTLOOK.COM (2603:10a6:209:82::45) To AM0PR10MB1874.EURPRD10.PROD.OUTLOOK.COM (2603:10a6:208:3f::10) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from prevas-ravi.prevas.se (5.186.115.188) by AM6P192CA0068.EURP192.PROD.OUTLOOK.COM (2603:10a6:209:82::45) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3654.12 via Frontend Transport; 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X-MS-Exchange-AntiSpam-MessageData: =?us-ascii?Q?ejJEMninqFRJoz6iBHjeqEWI/w8FTGyk22H9gipI/hov+MTf11KbcdPI3HyP?= =?us-ascii?Q?sZaykeoopcF0m1C8AVKqHQDejiwKuQLX2gwIGraGZ9HSIlcqz9xRcV6pTt/u?= =?us-ascii?Q?WM0YVwbOEXiAi+2VvmYmFFX76UxUw2G4eqTvP1W5eb21bMCbepQ78Gu3kqb8?= =?us-ascii?Q?IQhPguu/IRwY+ZcYJv1qlVmTCQ0gg0R5Werl9mTME9J+3n6wrSK7ppPxYJcx?= =?us-ascii?Q?9tJ3FZxeufzaEPSd4+ekzUiTXFYS6CjAqqHSKPlzYRzW2Xyfh1l90Za+NgJx?= =?us-ascii?Q?iGk1koj3YX+oIuMGBmQJirEYVYZ2HnzQGuZNTgQeltiM3k7aIQwW0oYWEUm8?= =?us-ascii?Q?Ta7jPo97O+HCU88smdKcc6fU0EIdVCeTOCMMvE0uIS4gJtGnTRXqL0TrOyXr?= =?us-ascii?Q?VkBHkakG+6zO9ryA2by7XiPBUVlvtCuOBM6H7zFEa0bw1AtPPQvRvb5cdnRu?= =?us-ascii?Q?c/5pP8eFWphU8D1XKdZLqrzjrXKXpCwlRPIhmlj/hf4k+Ko6lqLx7L/URnUW?= =?us-ascii?Q?MWMDndYwDBA/EUcRWmaFdgOAOqmiAZNgk8eqUduqjTtXOWIuEhcsWPo7o2ZS?= =?us-ascii?Q?TqsKRGfEnDOK2hTHiVCLWQt+SUJkQd613cXGWkrpT97XnHeIM15sC2ziPZGo?= =?us-ascii?Q?3urLWMK8COfqHbxERFQl318dWqmdfPZaw/Hpzgnbfv3fHTfXsGYVleBhwagI?= =?us-ascii?Q?vVUBfKJ59iWwqr+8gpu8vOzU6v3MbUrUOaOV90atDciJb4yxx4SYysfPwENA?= =?us-ascii?Q?L36JS+0qkXLSIZkhfPf1cAMGqwxS8PGR6hcjjCLck1N01a8DTJhdXO2Nsj6o?= =?us-ascii?Q?VwLK2kzw+UnxA9tdpqYbiijJ4ie9mOuE6eQV1kg8KaHBBZ5JHrTrujo+6+up?= =?us-ascii?Q?81f3rIC12d4mvCdmEWf7ol2tOv7Wm9kKJNFvhh6/o8ZpIeOg+vyo2Rh453Hw?= =?us-ascii?Q?eTEBSHkFKgGvCewweU4zbEcdFFc0128irVYvIZoqrVUBawypQ278nwAE/0eO?= =?us-ascii?Q?U3H8?= X-OriginatorOrg: prevas.dk X-MS-Exchange-CrossTenant-AuthSource: AM0PR10MB1874.EURPRD10.PROD.OUTLOOK.COM X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Dec 2020 21:56:21.1567 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: d350cf71-778d-4780-88f5-071a4cb1ed61 X-MS-Exchange-CrossTenant-Network-Message-Id: 13f84574-95d9-4d3d-ce06-08d89e1f987e X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: v5zvHxYteHkFRgt6kC6radeE2obUbSzImnrpx0RhBgoSjF42N8ODHiAY8gkkVMOHBRuWT0sm4KEJ8kd07u78utgBlCSdiqsfxXV0cUOPjwg= X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR10MB2867 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Some RTCs, e.g. the pcf2127, can be used as a hardware watchdog. But if the reset pin is not actually wired up, the driver exposes a watchdog device that doesn't actually work. Provide a standard binding that can be used to indicate that a given RTC can perform a reset of the machine, similar to wakeup-source. Suggested-by: Alexandre Belloni Signed-off-by: Rasmus Villemoes --- Documentation/devicetree/bindings/rtc/rtc.yaml | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/rtc/rtc.yaml b/Documentation/devicetree/bindings/rtc/rtc.yaml index ee237b2ed66a..b5e24dc24b0b 100644 --- a/Documentation/devicetree/bindings/rtc/rtc.yaml +++ b/Documentation/devicetree/bindings/rtc/rtc.yaml @@ -47,4 +47,9 @@ properties: description: Enables wake up of host system on alarm. + reset-source: + $ref: /schemas/types.yaml#/definitions/flag + description: + The RTC is able to reset the machine. + ... -- 2.23.0