From patchwork Tue Feb 13 00:26:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuninori Morimoto X-Patchwork-Id: 13554211 X-Patchwork-Delegate: geert@linux-m68k.org Received: from JPN01-OS0-obe.outbound.protection.outlook.com (mail-os0jpn01on2079.outbound.protection.outlook.com [40.107.113.79]) (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 3F40423A0; Tue, 13 Feb 2024 00:26:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.113.79 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707783979; cv=fail; b=q1e9I+fongJYFXV++478ybNZGqnPK3ky7bZTcb9UfOZjnWeop/T4LKAa96lZuMU/nBnbvNtANIWcZ1s1OKVv5wYHAbOounSuxEX5BX6dE0kLZWe+f6EXvj9H4rGj2wJiDlFIGOAa318wNblbyljakrYLBWhjRjQgoQZS3yACzd8= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707783979; c=relaxed/simple; bh=Ll1krBw3uiYXpuyYKqQpVT4dphvqDdiLbWjG9mTBlBI=; h=Message-ID:To:From:Subject:Content-Type:Date:MIME-Version; b=cjuaAUpgkxfNA9YTDFNCyaTYiXiQTOc8x1UpRmKmMlTBBohTTqVp72Om/e4dDkMPTyR++jwuJvGSXnm4BkQL0T1g92lwZJiLi+EsDk1BfVNbQkwzr/wlkfxIo0tzNuE7zCrnG3ZrFmjGwR4AZ45gDk6nLbawcKDtnpAaYWaR/LE= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=renesas.com; spf=pass smtp.mailfrom=renesas.com; dkim=pass (1024-bit key) header.d=renesas.com header.i=@renesas.com header.b=ceK9oBiX; arc=fail smtp.client-ip=40.107.113.79 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=renesas.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=renesas.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=renesas.com header.i=@renesas.com header.b="ceK9oBiX" ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=NbzXsYorEFHVCrQWQtuThh6ShsIv8M0HcfqFT35WO3hmg030kBUxDCk4SRuEOHcxpYym4V+E75OZa1KofT+KKJD0fpuKHib/ufvGMKZnXFTAXuVtTtCSh7MJDggeyAsehq9o8LgZvo3Bk5Liyb/LCLFZvd9Sm0LmO+iE9ZZI8kuvl4ZeIZD1JmO4zgpnwTMwvofi5CFgIS5Jff8rXSHzwn5q12ESl4zetdUnK2asZZ4sQLAEq++A/tULIYLMwoDF9TbDbSgj+yENnxftT1xExrrzTjfVPWgHyYOPXuXz6seT+QgFzYg2ASSjWbWRBhPwmqM0at2mZ9nyXz3KWYeVZg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; 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=BLOlGLUdkdwduQC7iFenRF/7YuOyLM0zHl29myyWImI=; b=nh002xIuOjwS58SYbmga731Nphtx885yUZoyut8TzlLzbWpCVxqrpOTk6ShqUe4SwXEciaqs5egejZw+nCyCvMywnaHfSA8TpQO7VKDT3sLPKyQC3rlVUcoOU13wgOmmKYuQ2htSbnMTKw8gKivqoUFCHCgH3vstDqbBndv5JRLM78P9hk/PZCoPekfsweDfDKNNPhCxJEIsJI6f/2jq29pCRvNzYKOBmicOOqgl1YcylVe16rl+gJPe+5ZXJB447QTIrRCyNytMIixoSkPjEKmSOmrDRGvY1Dj2wZks1+JwRhHMn0UCOmYiBgHwj67zy1w+k4BXF7s49b0lcDrnIg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=renesas.com; dmarc=pass action=none header.from=renesas.com; dkim=pass header.d=renesas.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=renesas.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=BLOlGLUdkdwduQC7iFenRF/7YuOyLM0zHl29myyWImI=; b=ceK9oBiX1Uo+XUWRmb0HIfNL430S6tZUqdkRnTOpd1IU7OLSy4YVyuH9kdzCX/znN6M+qitsaU4g9IHBfT5H7W8chaZsw189gdGS5dQyg9PULJQ7THir5WL5JgY8XmQYOJnxH91J+hF8W8AnZUVtbDa9bfH9NcE8xIrl1HKd2QI= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=renesas.com; Received: from TYCPR01MB10914.jpnprd01.prod.outlook.com (2603:1096:400:3a9::11) by TYCPR01MB8437.jpnprd01.prod.outlook.com (2603:1096:400:156::5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7270.39; Tue, 13 Feb 2024 00:26:12 +0000 Received: from TYCPR01MB10914.jpnprd01.prod.outlook.com ([fe80::4d0b:6738:dc2b:51c8]) by TYCPR01MB10914.jpnprd01.prod.outlook.com ([fe80::4d0b:6738:dc2b:51c8%6]) with mapi id 15.20.7270.036; Tue, 13 Feb 2024 00:26:11 +0000 Message-ID: <8734tx8b18.wl-kuninori.morimoto.gx@renesas.com> To: Geert Uytterhoeven , Ulf Hansson , linux-pm@vger.kernel.org, linux-renesas-soc@vger.kernel.org From: Kuninori Morimoto Subject: [PATCH v3] pmdomain: renesas: Adjust the waiting time to cover the worst case Date: Tue, 13 Feb 2024 00:26:11 +0000 X-ClientProxiedBy: TYAPR01CA0233.jpnprd01.prod.outlook.com (2603:1096:404:11e::29) To TYCPR01MB10914.jpnprd01.prod.outlook.com (2603:1096:400:3a9::11) Precedence: bulk X-Mailing-List: linux-renesas-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: TYCPR01MB10914:EE_|TYCPR01MB8437:EE_ X-MS-Office365-Filtering-Correlation-Id: 56b242e4-2769-4024-91d7-08dc2c2a6193 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:TYCPR01MB10914.jpnprd01.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(346002)(366004)(376002)(39860400002)(136003)(396003)(230922051799003)(64100799003)(451199024)(1800799012)(186009)(2906002)(5660300002)(38350700005)(478600001)(6486002)(52116002)(6506007)(6512007)(2616005)(41300700001)(110136005)(26005)(66556008)(66476007)(66946007)(8676002)(8936002)(316002)(83380400001)(86362001)(38100700002)(36756003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: renesas.com X-MS-Exchange-CrossTenant-Network-Message-Id: 56b242e4-2769-4024-91d7-08dc2c2a6193 X-MS-Exchange-CrossTenant-AuthSource: TYCPR01MB10914.jpnprd01.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Feb 2024 00:26:11.8226 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 53d82571-da19-47e4-9cb4-625a166a4a2a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: RpUG0Vr+fGzMqEVajjxN0Lk0nPqjvsf3O+ngV/V9pSLXzTwwYpuCwDVfQ+dTXLKNOXfBeVGqajigm7DU3iR1BqdQyi+d6ZVYO7/pGPG74WBGfJG0jVDoFp5ujBEXshJj X-MS-Exchange-Transport-CrossTenantHeadersStamped: TYCPR01MB8437 From: Dien Pham Description in HWM rev0.51E, 9.4 Usage notes, page 455 tells "It takes several hundreds of microseconds to shutting off and resuming power domain. Because actual time required for shutting off and resuming depends on the status of on-board power line, shutoff/resume time is not guaranteed by electrical specification" Let's assume the safe value of waiting is about 1000us. Signed-off-by: Dien Pham Signed-off-by: Takeshi Kihara Signed-off-by: Tho Vu Signed-off-by: Kuninori Morimoto Reviewed-by: Geert Uytterhoeven --- v2 -> v3 - remove Signed-off-by Geert - add Reviewed-by Geert drivers/pmdomain/renesas/rcar-sysc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/pmdomain/renesas/rcar-sysc.c b/drivers/pmdomain/renesas/rcar-sysc.c index eed47696e825..35d9aa0dfab8 100644 --- a/drivers/pmdomain/renesas/rcar-sysc.c +++ b/drivers/pmdomain/renesas/rcar-sysc.c @@ -45,10 +45,10 @@ #define PWRER_OFFS 0x14 /* Power Shutoff/Resume Error */ -#define SYSCSR_TIMEOUT 100 +#define SYSCSR_TIMEOUT 1000 #define SYSCSR_DELAY_US 1 -#define PWRER_RETRIES 100 +#define PWRER_RETRIES 1000 #define PWRER_DELAY_US 1 #define SYSCISR_TIMEOUT 1000