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Mon, 4 Jan 2021 16:19:59 +0000 From: Philipp Rosenberger To: linux-rtc@vger.kernel.org Cc: p.rosenberger@kunbus.com, dan.carpenter@oracle.com, u.kleine-koenig@pengutronix.de, biwen.li@nxp.com, lvb@xiphos.com, bruno.thomsen@gmail.com, Alessandro Zummo , Alexandre Belloni , linux-kernel@vger.kernel.org Subject: [PATCH 0/2] rtc: pcf2127: proper initilize rtc after power loss Date: Mon, 4 Jan 2021 17:19:08 +0100 Message-Id: <20210104161910.9144-1-p.rosenberger@kunbus.com> X-Mailer: git-send-email 2.29.2 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [87.130.101.138] X-ClientProxiedBy: AM4PR0101CA0078.eurprd01.prod.exchangelabs.com (2603:10a6:200:41::46) To AM9P193MB0968.EURP193.PROD.OUTLOOK.COM (2603:10a6:20b:1fd::8) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from kun-nb-112.kunbus.com (87.130.101.138) by AM4PR0101CA0078.eurprd01.prod.exchangelabs.com (2603:10a6:200:41::46) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3721.19 via Frontend Transport; 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X-MS-Exchange-AntiSpam-MessageData: =?us-ascii?Q?btuq2bvx/fYcjnY9vknlSBu0a2bkkX3GUm6NZtTLm5Rple1Z9IihsVByOwET?= =?us-ascii?Q?P0rJfRGXvcYXlZO5aeqjoBREqmlWSrdZPA2CjtiIaAzXNnZr8iLAXemJ+as+?= =?us-ascii?Q?PEca9DXdaa7G5ydPwb31cCGZTL6S/HNgQ4zw+wgmVIT/BsxJ0c7wyR0eXw/I?= =?us-ascii?Q?ZPMVZTxcA5bmedAJQpFunC6okFvPX98xiyg9kkqWoHJi+32mgrTaVNpXMGZK?= =?us-ascii?Q?+vT9y/yBh2LhgUc93TrL5jvFDUXpA1Jz3s4zNcDkGnZ8Hi5bWFk4751lbUr5?= =?us-ascii?Q?ke8qOSaEPUZOffA/1IiqFWBV8AcSAAowDVNAr51zTakBVeNzAB4sQf0MQ8Vn?= =?us-ascii?Q?pVgl7p0VXiJM1E8UOE/MjvGoEEwJEbeBzsmfhifLtzu1hT3743OT0HgvbTOQ?= =?us-ascii?Q?a3meEidfwWqP46oaZp4mC10DQH91JxXlF4v+XnnvqVehhPALEDa5YavnTo9+?= =?us-ascii?Q?mk7r0P9vfE9dEEo0NgrOZDB6IrM5MY5D+uegSqx0HS29VQh/IXz/i10NTa1z?= =?us-ascii?Q?wuVQETSl0rjRU1rqwOYVvqJP5+huGg+VFlzf0b4Ms11sLHNGm3G7e+9Tiou2?= =?us-ascii?Q?whl1HPG9yhYis1+WJ2OE9fvjhEja9CVAoOtDtWIAJEqv7TOOWC/sLVuUyIrO?= =?us-ascii?Q?uF3rGJq8bjbCEZnGJcd11+A7OCV7UYU6xwG8tRpZMHbTGpzdRg10GkRDtZOP?= =?us-ascii?Q?Vua8vioHJ3iYmwSxlGXZ4Fhzv5V3JZXS4jqsY0H/gxavQoVjCSHZf9Ysef2z?= =?us-ascii?Q?opog7PvQNRSFLo8FAwvohl9l1ZYckqyUS8KX3PjXq37r3eGi5j8oEpnwZkoX?= =?us-ascii?Q?C9H7bYK1St+LNZoXK0OwPBtrxTMEj2NnP5Csk+GL2MgpycZRprwndgO22uiG?= =?us-ascii?Q?Aw/udhs4GSIAylmkPW3SAz+J5XDWHeMIvthk6z9FfGa/4Gg3chlPAW8hAFyQ?= =?us-ascii?Q?F64W75CNRaRmKO+0Hc1Wv3NLgqdOdCTJAxWOdbdbZ+d0SQ5iIzH3On/hT0Hi?= =?us-ascii?Q?+klO?= X-OriginatorOrg: kunbus.com X-MS-Exchange-CrossTenant-AuthSource: AM9P193MB0968.EURP193.PROD.OUTLOOK.COM X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 04 Jan 2021 16:19:59.4460 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: aaa4d814-e659-4b0a-9698-1c671f11520b X-MS-Exchange-CrossTenant-Network-Message-Id: 90226db4-2d76-4b63-d014-08d8b0cc952e X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: sMGj/ZaxMSArpl2b94AlZsc/p1KBTAzBovDEG9Kmc4OjJUJAcd/KLdqhJpzuXXZsWbGerbm+Zg8eqxI6efWB7obl0ShxH2CON44xoQVzZgE= X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0P193MB0531 Precedence: bulk List-ID: X-Mailing-List: linux-rtc@vger.kernel.org If the PCF2127/2129 loses power it needs some initialization to work correctly. A bootloader/firmware might do this. If not we should do this in the driver. Philipp Rosenberger (2): rtc: pcf2127: Disable Power-On Reset Override rtc: pcf2127: Run a OTP refresh if not done before drivers/rtc/rtc-pcf2127.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) -- 2.29.2