From nobody Mon Feb 9 19:05:01 2026 Received: from PH0PR06CU001.outbound.protection.outlook.com (mail-westus3azon11011047.outbound.protection.outlook.com [40.107.208.47]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CE1C11E47C5; Wed, 7 Jan 2026 00:42:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.208.47 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767746571; cv=fail; b=j0J45O12i7WOC5DVaaOk3a6ca4ccJFfhYKUL+uly8CI1YIDmNNGo8bYwqXK8IVLSnTl/d3YcbycDouYrErS97wm2jpChHWMiBGsn4P/vWRVg/g4oiYWF/XDUWnAaow+7/UC1ZqNKkv5ONtIu1yrhrAwSeoL8gBXbint+YX3Dxtc= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767746571; c=relaxed/simple; bh=ExQ/8b/2G3828fPuyDBNbPC2koxlWGsuuzfZq36r/tY=; h=From:Date:Subject:MIME-Version:Content-Type:Message-ID:References: In-Reply-To:To:CC; b=UUnT9jI3KZGSuEBdemJv6ANG8sg61Zc8oJJbejiyD8RU9zfiPUCn492OfrhVUrRbZyfiZn9TbdkdzvSnxaGZHyylGZSSWxg0IbxOYRoP7maiJoym5inGlyPFMxL2BD3TyOvlrv4oN1FL0W1uFHNmE0A7AyEvYAhsILiABxvRUfk= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=ti.com; spf=pass smtp.mailfrom=ti.com; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b=gG6ZJ/lz; arc=fail smtp.client-ip=40.107.208.47 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=ti.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ti.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="gG6ZJ/lz" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=q64plj/077jxZ2DIBNyKNZcYvnGq/+id26C+HY7K5DDOM7ApTVpKasPWX0VN7WmyZH8wcqSJLr3fij7f52LwgjF0HoRPEzRfEdkx3gJCgRo6zHG3ifjlbyIE5pvSfvQ68u+/eJo9UwO+drirW4O3NMmLTkEkDfiKgH5LG50W1SjN3eJJIaJn4HZLwpR8YLm5ELGJiVCJ+byR95vzde3kueiFEB6iGIMncs4pl1/d0D769XoPKsDcpUQ8uxuqjDsAbP02QVcoXX14KpuwCYILxWKKehyhuKiDMiqvJvgau4CS1PP7cJeMvN098OpYLj6G6OEDhJKVOD7H2iKUR08gkw== 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=JXpQrsNloZxebq0NagS0nA4YBUsacSc+NnLoFEWj3Fk=; b=UswVSVuikQR1BZOLgYknf7SDYUd6NptmQ6WYHzul0VRUEVIkGX9gm2TmDUoGdUfBMoliKGsSXtFNSIMZXCrsfoUr+gYJLVaMkHhlGX2IPOHr8aZxJ1wrCYEKY8qk2I/2hMxSSsztIuAteNMx8MmDKzhvEzWCnvlxvCrLlF5uyLlSRUr6SB+m7kyewL0sD9KzrFVw1/IrOj7pl9Xe+IiIN5recvxfZKiB/Xv8gfgcASAXg8Xb5yL3jrNcNxuXmn1lqrnMLFAVZSoHcbXomCtCz+4oFglFqzGuTMWwBovPtgsfiatzMYl/JpVPHLXCyCxAWRThEBjb5NCet0EA6FNMJw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 198.47.21.195) smtp.rcpttodomain=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=JXpQrsNloZxebq0NagS0nA4YBUsacSc+NnLoFEWj3Fk=; b=gG6ZJ/lzv7aFwKvZHXsY6fSAIhNuoEMWPfdpjYsFa1rbE2V//yum0mRJt/MmNNHhoIBlNaqcJQvRjujO5Jd3GY0bOfZKkJ9uVXsrpkZSo4x8FpZgOGFQiATHI3esr6q46E718rhs5vVtAM7//016XcrnMz4xLpGV8+5jwyWvo9s= Received: from BY5PR16CA0003.namprd16.prod.outlook.com (2603:10b6:a03:1a0::16) by PH0PR10MB4744.namprd10.prod.outlook.com (2603:10b6:510:3c::8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9478.4; Wed, 7 Jan 2026 00:42:47 +0000 Received: from SJ1PEPF0000231D.namprd03.prod.outlook.com (2603:10b6:a03:1a0:cafe::d9) by BY5PR16CA0003.outlook.office365.com (2603:10b6:a03:1a0::16) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.20.9499.2 via Frontend Transport; Wed, 7 Jan 2026 00:42:47 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 198.47.21.195) 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 198.47.21.195 as permitted sender) receiver=protection.outlook.com; client-ip=198.47.21.195; helo=flwvzet201.ext.ti.com; pr=C Received: from flwvzet201.ext.ti.com (198.47.21.195) by SJ1PEPF0000231D.mail.protection.outlook.com (10.167.242.234) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9499.1 via Frontend Transport; Wed, 7 Jan 2026 00:42:45 +0000 Received: from DFLE204.ent.ti.com (10.64.6.62) by flwvzet201.ext.ti.com (10.248.192.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20; Tue, 6 Jan 2026 18:42:26 -0600 Received: from DFLE200.ent.ti.com (10.64.6.58) by DFLE204.ent.ti.com (10.64.6.62) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20; Tue, 6 Jan 2026 18:42:25 -0600 Received: from lelvem-mr05.itg.ti.com (10.180.75.9) by DFLE200.ent.ti.com (10.64.6.58) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20 via Frontend Transport; Tue, 6 Jan 2026 18:42:25 -0600 Received: from [127.0.1.1] (uda0506412.dhcp.ti.com [128.247.81.19]) by lelvem-mr05.itg.ti.com (8.18.1/8.18.1) with ESMTP id 6070gPrK3856461; Tue, 6 Jan 2026 18:42:25 -0600 From: Kendall Willis Date: Tue, 6 Jan 2026 18:42:19 -0600 Subject: [PATCH v3 2/5] arm64: dts: ti: k3-am62x-sk-common: Enable Main UART wakeup Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-ID: <20260106-b4-uart-daisy-chain-dts-v3-2-398a66258f2c@ti.com> References: <20260106-b4-uart-daisy-chain-dts-v3-0-398a66258f2c@ti.com> In-Reply-To: <20260106-b4-uart-daisy-chain-dts-v3-0-398a66258f2c@ti.com> To: Nishanth Menon , Vignesh Raghavendra , "Tero Kristo" , Rob Herring , "Krzysztof Kozlowski" , Conor Dooley , , CC: , , , , , , , , Kendall Willis X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1767746545; l=1888; i=k-willis@ti.com; s=20251230; h=from:subject:message-id; bh=ExQ/8b/2G3828fPuyDBNbPC2koxlWGsuuzfZq36r/tY=; b=efMbTxgj6IFbPAwUuDlAGOsK8ovpuNMPEp6n3jLYlfJP1JeiGDn+/QeZBDBywX1iWZKz9rvGc 2j5DWLaJSCIA7VdYnrpdSali+VywTwXGAW7OQFNGPsWMr628YP1JviY X-Developer-Key: i=k-willis@ti.com; a=ed25519; pk=fQiPVFwmogfDAKdaAKq163RWSfgHZVE/MrsDzp0Xo1k= X-C2ProcessedOrg: 333ef613-75bf-4e12-a4b1-8e3623f5dcea X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PEPF0000231D:EE_|PH0PR10MB4744:EE_ X-MS-Office365-Filtering-Correlation-Id: cf409fd0-e118-43f7-8caa-08de4d85acb2 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|376014|36860700013|1800799024; X-Microsoft-Antispam-Message-Info: =?utf-8?B?MWhpcjQzdEpvSm05Q3lRUHdoNGMya3lWMHF6Z0t3R3dTNHVzWE9rTmVMQU5X?= =?utf-8?B?TlVxWEdCVHdkS1pjbVplMnQ4Nm5GOFA0RXpUQ2V1cTJYYU1Fb0ZGeG9EYnlJ?= =?utf-8?B?TUZmd0ZTNGhxR1A5T3VheHJEcVZnYzJSSzl3WEpmeDhRSmhpZGhpL3BTd2Er?= =?utf-8?B?NVBWOGxxMGg2MVQ3S00zaU5wMUtHRVkyTEt2QTEyQ3FDbVRIVmk1SVl5ZExl?= =?utf-8?B?WEZjdUZZajEvTmlxbDdTNkFxTmw3NWVpTk1sQUVqYnlGOUEycWFoU2dkZEZZ?= =?utf-8?B?eFY3UWpwOEhjWkRUbHB2bk4wSkE2SkxGZVVQNjI5UGQzcXo2K3ZzbXFBN1hB?= =?utf-8?B?Q3NKcTlVWmNuTGFqeUZHUWNWbUl6eDFRQXkxcGtjKzBLMCtkcUxIOUhTaVk4?= =?utf-8?B?T2t1ajZwenV5WFhDd0NvU2xkMUVqK1VBcDN5cG9XSWtZeU1vOVZGNTRFWnRz?= =?utf-8?B?dWNaLzBHR2tIZmRBZzBPYWo3Q1ByUm01UmRPcDNTMUtkT1hTNzFsOVJ6c0My?= =?utf-8?B?aTJvM3F6dHR3WCtyVG5icnUyQWVxZ2t1azA1MHJRVFlSZEZZVUFIYmpKZCtv?= =?utf-8?B?NERsOUEvNkUwM21RYVJvMzJFcmpJWm03YUdRd0tzNmpsNW9Yc0RLcldzVGFZ?= =?utf-8?B?WFJYdUowY3lWblg2RTdGb0FXdTlSOWNtN0hKbmgwUjZMcjk5QjZ3YTZicHFp?= =?utf-8?B?UFRGRytmL0J4WmQ3NjVKMVp6YVhRNGNpaUMzMElONjNSc2dqZlNwakE3QU1X?= =?utf-8?B?QjE2VjQ4RXU2NHRuV0RQSDlpOVIxZ3hJOEV4cmhVYUFmQU5FN1RlK0RzTVlY?= =?utf-8?B?b0xQUVNDVk1nbzBmYUNGNDdzQmRkL0JMTVJZUksyM3R6NzlUL3MyRkNXZG9i?= =?utf-8?B?WHlucFlCeUhWajFteTloNmFQeWh4RW9ndCtsME1MQ3NKSkllMUZpOC9ZKzJu?= =?utf-8?B?RWoxbjJpZFdMTGRKUG5LYU9yTnk0UDlyK3ZZay82VS9JYldlYTllUURwOWlL?= =?utf-8?B?Nk42Nk9BYXoybW9mbjY2dnZGVkZKa3lyY2tHcTZWdXYvNkF5bmhkclZjZHkw?= =?utf-8?B?RE1saC8wQllLRkd0d2hSQkpHZWRBdFN0cjFWRGcvRjFpL3V0OUJUYm9GYWFq?= =?utf-8?B?TzY3RUJRazNTOUNtYzdIbHg0ODEyb1VFcHBsTEFIY2FvaTdqMkR1VUJ0aUhP?= =?utf-8?B?aUt5d25iQUdQa3Nkb2lncWp1RzlLejd4cjErbEVGY1ByVU5iMG93azhLbFh5?= =?utf-8?B?L0hJNmJwQW12WHZTZ2VBelh5dlpjREgvc0VkQXoweHZvY1NlMDduSmVmZHhh?= =?utf-8?B?bCtWRGlYdVhLcGk5TDF2bTdzRkJPSFlOdXBJbG9iK2hXSlZzaXlRTWYyZis1?= =?utf-8?B?ZTVYc0VWdmdDem5MUDFHVHhEakhjb2lNSTlGNktZNDlhTXh0SEtGeDR5WFgv?= =?utf-8?B?M0FjSko1eWpEQkN6NTlFTVUrbDNlL2JtRFVzTWtLYnQ3aGxOTWRQU0dsSUJa?= =?utf-8?B?eEQzTy9WbndVaEc3aFJKZDYzN1VZRkE3T3RqWXR6dXdoVlVHelROL29PYmtr?= =?utf-8?B?Y3l0cXorS2ZueUFZYy9HUUw1alpVZEw5Vmk4cmZ6RVQyeitIbm1ONllSNTh2?= =?utf-8?B?WFR0ckdoRWd2QVgyWHVGWHJWNCt4WHZNblhkMGxwRXA4NFl3MkovVE5wbEpV?= =?utf-8?B?WVBOYUo5K2l1bkFSWE56ZGN5am1jblhKaDhSOUhGamxSSWk5a3pjR2ZTcS9Y?= =?utf-8?B?azFDQU5UVjQwYjg1U3RkckNObnhrTEFLcXd6TDJSeTBHYnEranRvL2xYWEs0?= =?utf-8?B?eWhuankwOUhtRXpMTU9UeVhiR1VCazJMSS9Qc2czUG9sYjJPVVBpVHVjbmtt?= =?utf-8?B?dXRkdVp0Q1psbzg3TXNpbUYvRzd0d0Z4Qlh6ZWhYbHcwRTB6T2ZLWXpKNlpD?= =?utf-8?B?aEdLOFI1V205U0pQK0xLYXZ2QXN2L2lSZUFJamF4UHp4dzdFdEV1c1o1cXJ5?= =?utf-8?B?VTc4RkRPNGtDcTY5SW1RTDYrMk5WTjVINnJoUk5rNnNsTVpaVmtJRkJkTVN1?= =?utf-8?B?a2NuZ2VvL2FnOFlYY2JxcXEzaGNwR0pYenFyME0zWEF1cjZZbUt6Ui9haXhs?= =?utf-8?Q?lsGA=3D?= X-Forefront-Antispam-Report: CIP:198.47.21.195;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:flwvzet201.ext.ti.com;PTR:ErrorRetry;CAT:NONE;SFS:(13230040)(82310400026)(376014)(36860700013)(1800799024);DIR:OUT;SFP:1101; X-OriginatorOrg: ti.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Jan 2026 00:42:45.5706 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: cf409fd0-e118-43f7-8caa-08de4d85acb2 X-MS-Exchange-CrossTenant-Id: e5b49634-450b-4709-8abb-1e2b19b982b7 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=e5b49634-450b-4709-8abb-1e2b19b982b7;Ip=[198.47.21.195];Helo=[flwvzet201.ext.ti.com] X-MS-Exchange-CrossTenant-AuthSource: SJ1PEPF0000231D.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH0PR10MB4744 The Main UART can resume from suspend to RAM states when PIN_WKUP_EN is enabled. Add the necessary pins needed to wakeup the system. Add the system idle states that the Main UART can wakeup the system from. The UART driver uses the "default" pinctrl state when the system is active. In the suspend hook, if the UART is wakeup enabled, the "wakeup" pinctrl state is selected by the UART driver in order to allow wakeup. Upon resume, the default pinctrl state is selected again. Reviewed-by: Markus Schneider-Pargmann Reviewed-by: Dhruva Gole Signed-off-by: Kendall Willis --- arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi b/arch/arm64/bo= ot/dts/ti/k3-am62x-sk-common.dtsi index 50ed859ae06c47af38b11753d909a91485d438e5..ab9e58c2d225eb44c054d984aad= 8f0bed92bf7e9 100644 --- a/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi @@ -151,6 +151,13 @@ AM62X_IOPAD(0x1cc, PIN_OUTPUT, 0) /* (E14/E11) UART0_T= XD */ >; }; =20 + main_uart0_pins_wakeup: main-uart0-wakeup-pins { + pinctrl-single,pins =3D < + AM62X_IOPAD(0x1c8, PIN_INPUT | PIN_WKUP_EN, 0) /* (D14/A13) UART0_RXD */ + AM62X_IOPAD(0x1cc, PIN_OUTPUT, 0) /* (E14/E11) UART0_TXD */ + >; + }; + main_uart1_pins_default: main-uart1-default-pins { bootph-pre-ram; pinctrl-single,pins =3D < @@ -322,8 +329,12 @@ &wkup_uart0 { &main_uart0 { bootph-all; status =3D "okay"; - pinctrl-names =3D "default"; + pinctrl-names =3D "default", "wakeup"; pinctrl-0 =3D <&main_uart0_pins_default>; + pinctrl-1 =3D <&main_uart0_pins_wakeup>; + wakeup-source =3D <&system_deep_sleep>, + <&system_mcu_only>, + <&system_standby>; }; =20 &main_uart1 { --=20 2.34.1