From nobody Fri Jan 2 05:00:14 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 57961CDB465 for ; Mon, 16 Oct 2023 11:30:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233349AbjJPLah (ORCPT ); Mon, 16 Oct 2023 07:30:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36264 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232649AbjJPLab (ORCPT ); Mon, 16 Oct 2023 07:30:31 -0400 Received: from NAM11-DM6-obe.outbound.protection.outlook.com (mail-dm6nam11on2042.outbound.protection.outlook.com [40.107.223.42]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 782AEE3; Mon, 16 Oct 2023 04:30:29 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=QkyET5IDNdZttaZz5zJsBcg9/EcZDLMdCSfV6esKS2MASCPYzTxobzfWdwcfmFSC+p8u0btAZsiJyLNI+HJoQK6FS+wvZxVrvIHXm1nIeNwNMXIAKXm0nSUi5VSW098iLqwN8/Z+WbXYTEpzu79Hs4Zzjw5V6CQlJyxSJ2eZhyh30jMn7AO7nH2RV6QSYs/ibWncnHhmx9Ew7/r+5npV1TyJPE/ouXnwx/gr1a8V0FqDiGU1SpWOobq0f+bhYMuCpGaoReDtU7XguoGcrtMbtHWL4BQhUIfBH1oRI7uQnEwOvDgAyVJc1TLvdu4dPUmCyiFkl9whj6/3ljyPuBhRJg== 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=GN4yVn9esUyFcQcbMxFoKgdLb/vw51euHpR+9+X+buo=; b=K09ZqKR+sovqLJw8ZBE5emHChTbiuaaj7vYDYKTw6bXm+wUxISLxlR0N2J5mujyp9dFyQJzVtxis9uvOBmYHJsyO82EYa6y03C/68d9iItKSzqMT7N+7VvRctTH78Ht+499iuKUenjeJ+O47Ed7nf4G5nevjDwJ8MbpPMIOMNytlKdJeQeBa7k+eYn2JNdwz5lGC2W9/x9MseMWEm6t8plFhHO1d7uqbsRE+BIKXg84soHK7hlKb7eyLRULzYuhW83Ngg5tGiSfGgG+3XGUZxRM7GhDH5lWQjdjwCP5T+rgkl06hAoGW2XuLlYjFmTkQaGt0MYeVGRID0TFAr3Sfdw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=baylibre.com smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=GN4yVn9esUyFcQcbMxFoKgdLb/vw51euHpR+9+X+buo=; b=TvLbHosi70HNf2be14zrv6vfYG910jwbEvSLTR6yDmPV8q7JkeuCyMKIhxowHBBwYzRNP/GCSoNiLDqCkF/K6+3xUjo9m5TU4maAjfu1QqzDj11h8ScsdyDCpyLR69bMikku3BnpaP4GjxGqcOlleYFvspJTZW9mUai3TgbieSM= Received: from CYZPR20CA0020.namprd20.prod.outlook.com (2603:10b6:930:a2::25) by LV8PR12MB9229.namprd12.prod.outlook.com (2603:10b6:408:191::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6863.38; Mon, 16 Oct 2023 11:30:26 +0000 Received: from CY4PEPF0000FCBE.namprd03.prod.outlook.com (2603:10b6:930:a2:cafe::b4) by CYZPR20CA0020.outlook.office365.com (2603:10b6:930:a2::25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6886.35 via Frontend Transport; Mon, 16 Oct 2023 11:30:25 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB03.amd.com; pr=C Received: from SATLEXMB03.amd.com (165.204.84.17) by CY4PEPF0000FCBE.mail.protection.outlook.com (10.167.242.100) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6838.22 via Frontend Transport; Mon, 16 Oct 2023 11:30:25 +0000 Received: from SATLEXMB05.amd.com (10.181.40.146) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Mon, 16 Oct 2023 06:30:24 -0500 Received: from SATLEXMB03.amd.com (10.181.40.144) by SATLEXMB05.amd.com (10.181.40.146) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Mon, 16 Oct 2023 06:30:22 -0500 Received: from xsjarunbala50.xilinx.com (10.180.168.240) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server id 15.1.2507.27 via Frontend Transport; Mon, 16 Oct 2023 06:30:22 -0500 From: Jay Buddhabhatti To: , , CC: , , , Jay Buddhabhatti Subject: [PATCH RESEND 1/2] drivers: clk: zynqmp: calculate closest mux rate Date: Mon, 16 Oct 2023 04:30:01 -0700 Message-ID: <20231016113002.15929-2-jay.buddhabhatti@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20231016113002.15929-1-jay.buddhabhatti@amd.com> References: <20231016113002.15929-1-jay.buddhabhatti@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000FCBE:EE_|LV8PR12MB9229:EE_ X-MS-Office365-Filtering-Correlation-Id: b91e0025-6529-40f7-e0d7-08dbce3b4ac2 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:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB03.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230031)(4636009)(136003)(396003)(346002)(39860400002)(376002)(230922051799003)(186009)(451199024)(82310400011)(1800799009)(64100799003)(36840700001)(40470700004)(46966006)(36756003)(86362001)(2906002)(1076003)(40480700001)(44832011)(41300700001)(110136005)(478600001)(5660300002)(2616005)(6666004)(40460700003)(70586007)(70206006)(8676002)(316002)(336012)(356005)(426003)(4326008)(26005)(54906003)(6636002)(8936002)(81166007)(82740400003)(36860700001)(47076005)(83380400001)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Oct 2023 11:30:25.4641 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: b91e0025-6529-40f7-e0d7-08dbce3b4ac2 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000FCBE.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV8PR12MB9229 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Currently zynqmp clock driver is not calculating closest mux rate and because of that Linux is not setting proper frequency for CPU and not able to set given frequency for dynamic frequency scaling. E.g., In current logic initial acpu clock parent and frequency as below apll1 0 0 0 2199999978 0 0 50000 Y acpu0_mux 0 0 0 2199999978 0 0 50000 Y acpu0_idiv1 0 0 0 2199999978 0 0 50000 Y acpu0 0 0 0 2199999978 0 0 50000 Y After changing acpu frequency to 549999994 Hz using CPU freq scaling its selecting incorrect parent which is not closest frequency. rpll_to_xpd 0 0 0 1599999984 0 0 50000 Y acpu0_mux 0 0 0 1599999984 0 0 50000 Y acpu0_div1 0 0 0 533333328 0 0 50000 Y acpu0 0 0 0 533333328 0 0 50000 Y Parent should remain same since 549999994 =3D 2199999978 / 4. So use __clk_mux_determine_rate_closest() generic function to calculate closest rate for mux clock. After this change its selecting correct parent and correct clock rate. apll1 0 0 0 2199999978 0 0 50000 Y acpu0_mux 0 0 0 2199999978 0 0 50000 Y acpu0_div1 0 0 0 549999995 0 0 50000 Y acpu0 0 0 0 549999995 0 0 50000 Y Signed-off-by: Jay Buddhabhatti --- drivers/clk/zynqmp/clk-mux-zynqmp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/clk/zynqmp/clk-mux-zynqmp.c b/drivers/clk/zynqmp/clk-m= ux-zynqmp.c index 60359333f26d..9b5d3050b742 100644 --- a/drivers/clk/zynqmp/clk-mux-zynqmp.c +++ b/drivers/clk/zynqmp/clk-mux-zynqmp.c @@ -89,7 +89,7 @@ static int zynqmp_clk_mux_set_parent(struct clk_hw *hw, u= 8 index) static const struct clk_ops zynqmp_clk_mux_ops =3D { .get_parent =3D zynqmp_clk_mux_get_parent, .set_parent =3D zynqmp_clk_mux_set_parent, - .determine_rate =3D __clk_mux_determine_rate, + .determine_rate =3D __clk_mux_determine_rate_closest, }; =20 static const struct clk_ops zynqmp_clk_mux_ro_ops =3D { --=20 2.17.1