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Fri, 28 Aug 2026 16:32:37 +0800 (CST) Date: Fri, 28 Aug 2026 16:32:33 +0800 From: Johnny Fan To: Ard Biesheuvel Cc: Alexandre Belloni , linux-rtc@vger.kernel.org, Feng Tang , linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org, cix-kernel-upstream@cixtech.com, bob.zhang@cixtech.com, jie.fu@cixtech.com Subject: Re: [PATCH] rtc: efi: restore alarm support with runtime capability probe Message-ID: References: <20260828031519.2749354-1-johnny.fan@cixtech.com> <549999fa-4b1a-4f53-872a-9036a377f8cf@app.fastmail.com> Precedence: bulk X-Mailing-List: linux-efi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <549999fa-4b1a-4f53-872a-9036a377f8cf@app.fastmail.com> X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SG2PEPF000B66CF:EE_|JH0PR06MB7108:EE_ X-MS-Office365-Filtering-Correlation-Id: 5988c0d0-70b0-4f46-3cd6-08df04deeb7a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|23010399003|82310400026|36860700016|1800799024|10067099003|4143699003|56012099006|18002099003|22082099003; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: hsDJiXaYplUbhOOmBKjluhg9gePd1MkZfPs12MTqxZATgzzZiW6QNPrXbkYea44Nh6pTgFxQablMXC3++/sSrqx00z7YMHTAEzldr+7N3adoQjiRB6zaWPS4TqZboViFiwYXxMxO7gL86+fyKzEgfI1EqTLGlqmjNyp3q3nW0niZ7NsRd4x+crgEVrEaeFQeu7aHtfUrr6nvOaj8opFk6oNefbR0lLIkLjFjj6QjyWfVqEeaS1yTZDeHUZ58IugptiAAFDdsik9Q+uv5yI1Wzv4VQ7tt6eCLuRHrxmN6Vp9Y38d+vxHnFtYtO/IOnUTzCqSn5QRVzZDYClKcezGaf8y3vikXEu8Dczk9IfzmL3KoW51cThpuNDaLqJKVJ4ESty7buXKdDzX640shdgMkOUfuObNFDdhv/dAlcLpK0XIwyswKwAUHRY3rAU5rB3t3 X-OriginatorOrg: cixtech.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Aug 2026 08:32:38.7899 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 5988c0d0-70b0-4f46-3cd6-08df04deeb7a X-MS-Exchange-CrossTenant-Id: 0409f77a-e53d-4d23-943e-ccade7cb4811 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=0409f77a-e53d-4d23-943e-ccade7cb4811;Ip=[222.71.101.198];Helo=[smtprelay.cixcomputing.com] X-MS-Exchange-CrossTenant-AuthSource: SG2PEPF000B66CF.apcprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: JH0PR06MB7108 On Fri, Aug 28, 2026 at 09:26:42AM +0200, Ard Biesheuvel wrote: Hi Ard, One additional data point: this is not a hypothetical requirement -- multiple CIX customers have explicitly requested RTC wakeup support (both suspend-to-RAM and power-off wakeup) on these platforms, which is part of why we are motivated to restore the alarm functionality rather than work around it. Thanks, Johnny