From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 62E48CD0416 for ; Mon, 5 Jan 2026 22:14:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:CC:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=0AYcEVELS6bk/o08w1DNN/aZSOkiS8/qtk1xy1i3nuU=; b=GUKh+2k9LYGajz7hv9SPp8gS06 F+P9ZpXT9aJN/ekPi/WtH0prhTOttCfZ3uz+4cl1GVuyvlyqA5T9pI/O7UqCsH5WtYyDo1ViVQq81 /6BqQa86euNs2R1dEM1OxHT/cDy7UwGKlSLdfkhoP/h8reI0Zd6CNXttLTIvMQiBX9yqMgEV+heMm y9Fah2L4/Jgc1Tl3N8vVjSZxWFuuY5KU6Nw2kgTF8met9TNbygW2obA/BLYkWCz4Qf1IzjW8UR5W0 G+1GwuOv/snaygIq6OfphhLqUydfdtk/ExhX+3f2iT6gh8ivRKtgbwSx6LN+RxJLkyVQipGzvxJpO Y6lavHOQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vcsqP-0000000C9L1-1W1i; Mon, 05 Jan 2026 22:14:33 +0000 Received: from mail-eastus2azlp170100001.outbound.protection.outlook.com ([2a01:111:f403:c110::1] helo=BN1PR04CU002.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vcsqN-0000000C9Kg-1bSL for linux-arm-kernel@lists.infradead.org; Mon, 05 Jan 2026 22:14:32 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=OvKvKYcwTCQ8Ueaua5g3xL/VuDh2TcPBlva97LdUmtLwwSBPU0O0w32r148UxAbXmUFlMHj+AtNmkrF5di+Qsm67A5BzXuRRIjpF+3VSZiyPXgeT0l+IecEJAWDmtlf8y7mxAw5MDhtNuPU/lHVwP31N9QBCFapDP2os2F+nUzhXIq/wBEca2bLpj1DaKfXY0e6YSRjAwfM18FlWuOnyLMBecEWCuV8Hj0WYXXcDmfD+IZuecnXbHO0CIbCEe938SR1tig6TeRjoBEwO0p7ZhbAUzaGKpUVsrMTAWFAkSA3AN4RtOvFd5g5D9Hb7c+K92ci5l5lMhASegvmnaHk0LA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=0AYcEVELS6bk/o08w1DNN/aZSOkiS8/qtk1xy1i3nuU=; b=vZxxaFYXywWEhXtscp/oxntuMMTq9hDvYjcVvyNTlkqnDgy4ekUflzeyxzSif4dPUKKal3+YVE7d4l6JDnOn/Zpqi+ybBV9jL/T+dM19YYof5jDS57JWtzFOMXtySh9GP3gqMr7Os81KRAMdvta2YgP3eAC4WeHnxA9loL4UkjZYVnMPSny1+W9DseXnqbFwUykIqJx5CaA12LvHFjIB1zCiq6T0N+9Oze0fPsVMum97eAnGjmJGch3K9UaptCQHhpyxTCpM+OhyUriqvJ5HR+GMm/FO0br2smsDhPYKvSpwD5e4UsjktOhnk+uyjG/GwnemabcIjOEO8VLttRNXwg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 198.47.23.194) smtp.rcpttodomain=vger.kernel.org smtp.mailfrom=ti.com; dmarc=pass (p=quarantine sp=none pct=100) action=none header.from=ti.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=0AYcEVELS6bk/o08w1DNN/aZSOkiS8/qtk1xy1i3nuU=; b=Vs2wmBBOW+nBZNi4qLjLtgOpBYwDyKImPdDM1FhzpB+snjAbo5fSoEKaSqH9xf5KWAATj05nyYV7uqzTJgfb5q+egEuegKBpvPCqTJIEaxuk07FmEbJMJ5cL1zw4+YwW/tkg/4xuGXPyZlMLQLgl6GPIkjslayCJ60fPHSnBLYs= Received: from BY3PR10CA0011.namprd10.prod.outlook.com (2603:10b6:a03:255::16) by DS7PR10MB4911.namprd10.prod.outlook.com (2603:10b6:5:3a8::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9478.4; Mon, 5 Jan 2026 22:14:26 +0000 Received: from SJ5PEPF000001ED.namprd05.prod.outlook.com (2603:10b6:a03:255:cafe::1b) by BY3PR10CA0011.outlook.office365.com (2603:10b6:a03:255::16) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.20.9478.4 via Frontend Transport; Mon, 5 Jan 2026 22:14:26 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 198.47.23.194) smtp.mailfrom=ti.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=ti.com; Received-SPF: Pass (protection.outlook.com: domain of ti.com designates 198.47.23.194 as permitted sender) receiver=protection.outlook.com; client-ip=198.47.23.194; helo=lewvzet200.ext.ti.com; pr=C Received: from lewvzet200.ext.ti.com (198.47.23.194) by SJ5PEPF000001ED.mail.protection.outlook.com (10.167.242.201) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9499.1 via Frontend Transport; Mon, 5 Jan 2026 22:14:25 +0000 Received: from DLEE203.ent.ti.com (157.170.170.78) by lewvzet200.ext.ti.com (10.4.14.103) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20; Mon, 5 Jan 2026 16:14:23 -0600 Received: from DLEE205.ent.ti.com (157.170.170.85) by DLEE203.ent.ti.com (157.170.170.78) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20; Mon, 5 Jan 2026 16:14:23 -0600 Received: from lelvem-mr05.itg.ti.com (10.180.75.9) by DLEE205.ent.ti.com (157.170.170.85) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20 via Frontend Transport; Mon, 5 Jan 2026 16:14:22 -0600 Received: from [128.247.81.19] (uda0506412.dhcp.ti.com [128.247.81.19]) by lelvem-mr05.itg.ti.com (8.18.1/8.18.1) with ESMTP id 605MENB01977329; Mon, 5 Jan 2026 16:14:23 -0600 Message-ID: Date: Mon, 5 Jan 2026 16:14:23 -0600 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 3/3] arm64: boot: dts: ti: k3-am62l3-evm: enable WKUP UART wakeup from LPM To: Bryan Brattlof CC: Nishanth Menon , Vignesh Raghavendra , "Tero Kristo" , Rob Herring , "Krzysztof Kozlowski" , Conor Dooley , "Dhruva Gole" , , , , , , , , , References: <20251230-wkup-uart-wakeup-v1-0-cd6e15f8d956@ti.com> <20251230-wkup-uart-wakeup-v1-3-cd6e15f8d956@ti.com> <20260105140128.bd5tiheg3k6y2tyd@bryanbrattlof.com> Content-Language: en-US From: Kendall Willis In-Reply-To: <20260105140128.bd5tiheg3k6y2tyd@bryanbrattlof.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-C2ProcessedOrg: 333ef613-75bf-4e12-a4b1-8e3623f5dcea X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ5PEPF000001ED:EE_|DS7PR10MB4911:EE_ X-MS-Office365-Filtering-Correlation-Id: 01e7bac4-b7a3-4665-77f3-08de4ca7c9b5 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|1800799024|36860700013|82310400026; X-Microsoft-Antispam-Message-Info: =?utf-8?B?bG56T0hBVWVKRTRYdmhrK3RhNllTRUlKK3JXT3hCQVV4ZytjQmNDMm5qSkYy?= =?utf-8?B?OUZsbWp5UFBYd3lPSmY0VW5JSTU3VjFlMCtrZ2hVQlhmNEtsWkxxb1BzQmJ1?= =?utf-8?B?TW5aeitRMFJVWWYrcHZrRXF3OHVOK0lSQzBUcWs0UWlhSXdiTnVvZmJXOE5l?= =?utf-8?B?a2d5NHNWSWtoYnZjUjVLUGMwQlBPTXd5MmhwQXN3QUp2YUlYQ0YwUUlMYVRE?= =?utf-8?B?dHhjSk9UODZ4TE9vQVNKYTJoRnlEeEZaVFA5Q3RWSHdzVzFPV05xRWZMc29M?= =?utf-8?B?WlVqeUxCeUh4QmxTcVNGOWNFd3lWSmU4NFh3Ums3L3BKTTVWTThWQ2FyNnZQ?= =?utf-8?B?YzBHMmRhdi9mdkNjdnJuSGhiL01GMG13TkU2bGNDVEZ4Y01EYWR4TVJ0SW5l?= =?utf-8?B?Y1BwOHVnSDZQTU42NmdMMU1JbkxSWHBnYi8yMXhIWWNVL1JTcHVUV2RCbXZW?= =?utf-8?B?aERXaFhlWTMwQXBtZGtDeTJGa1cydnNvYlFOOHh2OWhXYkdpa1BWV2pSSkp2?= =?utf-8?B?WWd5Z1c4dFhneXFZdnMwVG84UXJybVFzWUEzOGZqWDVyVUk5ak1NZEYwSXA4?= =?utf-8?B?aGFBQ1BQZytPQ1JDbmNFYkZwNkxzVjR1L0g3cjU1L3IrcWovQXg1ZUtueWVG?= =?utf-8?B?MXZvSTkvOXpnSXZaaDQ2dklOb21MN3laKzJ2dkJGT3RYQUZMN25KelVvS1hY?= =?utf-8?B?Q0RMdFR5eThHOGJzUjgzc1RKSHBNZWdUSEg5dHNKWjNMa2ttZlFIOWVURWJW?= =?utf-8?B?SEF0bXRFTHR6Zy9uQkZBVmoxSm84VjdLblZhWFVVajBRV2UxVjFzNlpOdG5v?= =?utf-8?B?REMwQVpVcmVCektLQXF3THllWlB2TmJ0UzJBM2lMYVZGUTJKWElDV1NIOFow?= =?utf-8?B?QldrRkNDby9aRCt6dDZWRGJzL0Qwa1k0RUdmM3lHb0VZU0VvTnVjRlI4NmpR?= =?utf-8?B?RlI2bVpyUk40S25LS3BPeEN0VGpEK3A3dTlOVzV1NzZpamV6R1RKcjNGYklv?= =?utf-8?B?TUFnc1Z1SUtqZWU2WHBEeHM2emFaM2NzTUlJR2FVZWEyR3BVbG8rZDRveXpT?= =?utf-8?B?Q3lzRTJDczI3TXp2Tlk2cWR3dDVOTUY2R3JlNUp1QzYvVVZ6NG8xSFF0akFF?= =?utf-8?B?aE12d1RjMnJPSzdnSUVZRzJqd2xJNStGbXVDNm03VTRmc1NEaGNGc0ZWcUhr?= =?utf-8?B?UjMvRmZEWXBIYzdLK1JvNXJkdUhaS0Z2NnYwV0lCcXRFbi8yM2lSYTBENGJM?= =?utf-8?B?d05GUWZzUU1YTXNLd3JJYTFNVklaU0VKNFNYTG56azlDYlhJaHczblZnVHZG?= =?utf-8?B?dU1oRERTRG1YUWN1MUlYc2VjaTVheGJJVmgya09iaGFMSk9qdFYyR3hCbjBa?= =?utf-8?B?eTUrUXpKZGtGZmZyVnBnMUJmS3pvelpPT3BDS0d4eXdFaVYyNit5NXpJdjN2?= =?utf-8?B?TldsQ3dTR08xQWVDa3l5UEgybnNaaXVMOWtUcnBGLzE2ZHVCc1JtQVprVHVV?= =?utf-8?B?K0M0b0Q1bVlsVUpHS2FVWDVuR1VnS0pYOEt2a1RzVzVTMVBCVXVwMUtKQTRm?= =?utf-8?B?YStHbElGNDgwYTFFRWovZmVFQmhxSC93b0xWaXBENGF0SC8rZ0Vyc0ZqVHoz?= =?utf-8?B?bDFVSFR2dmJzeWp0RHN0MTI2SStGS3N2cDlKQVJFc0lld3dzN2MyTHZnalph?= =?utf-8?B?dlpaT0M0QVp3aHNjbWRIZGl5eXdiMnZNQ0VJanRiamdpVlNFTEl3WnR4Z0hW?= =?utf-8?B?enl1eEF6RytYS3dkUVB0Vk9WNnU5K3Znd1hHVFZoSnByMlc4NzY1cXhXUFZM?= =?utf-8?B?S2R6ekx2TjlKbzczV012RENsR2hNTXRVOVRlZWpvM2F5cVRIWjlzZzFNd2FG?= =?utf-8?B?bXpaczFWWll0YklDSXF4OXNuY0RSdzhkcjRrZmFteUdPcytRcmhNdFFaaDRq?= =?utf-8?B?eXdEV3R4emIvOTNIZzJ3MXhJRlpyWmpmVG5lb3VMMHJ2Wk41TUFKVFBleTJY?= =?utf-8?B?Wlp3WTB6UXVRR2ZuNWhSNEJ5RHMraElNK2RqL2JUcHhmeUhVRUJXbWVIck10?= =?utf-8?B?bG00VkZhUmE1VTMycDFxay9ieVRwUysxSHJuYjR4M1A5Nm5QajhBYWtvMHhK?= =?utf-8?Q?tb0o=3D?= X-Forefront-Antispam-Report: CIP:198.47.23.194;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:lewvzet200.ext.ti.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(376014)(1800799024)(36860700013)(82310400026);DIR:OUT;SFP:1101; X-OriginatorOrg: ti.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Jan 2026 22:14:25.9910 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 01e7bac4-b7a3-4665-77f3-08de4ca7c9b5 X-MS-Exchange-CrossTenant-Id: e5b49634-450b-4709-8abb-1e2b19b982b7 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=e5b49634-450b-4709-8abb-1e2b19b982b7;Ip=[198.47.23.194];Helo=[lewvzet200.ext.ti.com] X-MS-Exchange-CrossTenant-AuthSource: SJ5PEPF000001ED.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS7PR10MB4911 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260105_141431_462339_E44DBE1E X-CRM114-Status: GOOD ( 13.75 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 1/5/26 08:01, Bryan Brattlof wrote: > On December 30, 2025 thus sayeth Kendall Willis: >> Change the status of the wkup_uart0_interconnect node to enabled. The >> target-module node sets the UART SYSC and SYSS registers to allow wakeup >> from WKUP UART in DeepSleep low power mode. >> >> Signed-off-by: Kendall Willis >> --- >> arch/arm64/boot/dts/ti/k3-am62l3-evm.dts | 4 ++++ >> 1 file changed, 4 insertions(+) >> >> diff --git a/arch/arm64/boot/dts/ti/k3-am62l3-evm.dts b/arch/arm64/boot/dts/ti/k3-am62l3-evm.dts >> index cae04cce337366b50928d39b0c888550b14e43d3..02b1a1c76b2ee05d49cd69d199a6aacdb1973fa0 100644 >> --- a/arch/arm64/boot/dts/ti/k3-am62l3-evm.dts >> +++ b/arch/arm64/boot/dts/ti/k3-am62l3-evm.dts >> @@ -359,3 +359,7 @@ &usb1 { >> pinctrl-names = "default"; >> pinctrl-0 = <&usb1_default_pins>; >> }; >> + >> +&wkup_uart0_interconnect { >> + status = "okay"; >> +}; > > Does the UART need to be enabled as well? > > ~Bryan The UART does not need to be enabled because the interconnect target module manages the SYSC register which configures the WKUP_UART to be able to wakeup the SoC from system suspend. This allows the WKUP_UART to be wakeup capable for the SoC even if it is disabled by Linux. Best, Kendall