From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from CY3PR05CU001.outbound.protection.outlook.com (mail-westcentralusazon11013070.outbound.protection.outlook.com [40.93.201.70]) (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 35229480355; Wed, 6 May 2026 14:09:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.93.201.70 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778076576; cv=fail; b=WWsFLIq9fve82qcH9k01aA2+j7wKIfbbHALlnM0Z8EtD+u7D58oGL7XdKd6I6uYykcuci2XZqbOTf4/1P/gmUHkpJrPmU7z0PIJ5viKTsGstj2dJqVKp1wXAYVSmKZOoXbOQXXSFqA0gV/5p0VEL+gfGZeKruHwr88+lggVK7dk= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778076576; c=relaxed/simple; bh=AjdbUjzSpzgtNIEICDhW3hJ6cWIOjXawYMHBwiemI/A=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=W1RaNGbxpxsBvkD3ZUR/JDrBCVrD9nJF9WWr3K/3TA/xAZ22pbTSKAcvUib7zzgAKtGLbmFcnG+nhN4ZeNExnXI2++7fea8X+zA/Ny/H0huIyQj/XWEBuxHzJ39HphBHzaR5gGdM75a53VqjfnHNwjDr5hbM05iNIHA40w/u580= 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=qKh86olk; arc=fail smtp.client-ip=40.93.201.70 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="qKh86olk" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=pAZNt9vrzr5ELORf6Tc8aeiXc6b1uKRWswzet9DsO1P3jyY2sUEtKZXBl1EwU3LuLAV90scDF6XpSBlpA6JXaCGJid7LveOv2zszu4++858J9daZb+68qpWl2QKRIecDRQsKQEaFIpvSvO2ItT4fDpVxtTZtgCLtSsi2oBH4RJjVbJ4JJ9X5ridc+xZ8Zu7uK9eM0hCFsdrl5ZWoyNCSwlCib9xqQOhNt0vnAvhkmc3FPXmOLHkQcyXgY3RxFh52k2qDUvjElLbzUcFfZ2ShA5bl0HO+yrahkQ6DTKUR8ucnrkzYEAZVxrW3kT5Yr6JeKf3ZZI8FPwlQO+uCxYUT9A== 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=wENkkocfv33Eu+N1AJY8biL8WJvvKj0EPHbFigieoFU=; b=ROg9wyYJ+cN6v5QrsIKGV4lmFR1f6PXBGmn3kioyjrdREzBK537zPn2rzTZfmpTNR/mMrmjPjuZOG3ZqrvMpGZcqR+n1t1TjKPaSD/EtM1HUYtCh/ZxZBvvDXxz90uY8ajx9AC+0R4IM5y3hCJZ8WQeBoeSfONubEylDvmzRubXrOKwVod7felRCJNq8bn4dTwyXayW6n5LFuaLMkbwc6Vc9VViNC6xPJa+s5RMqJNDkprPds6sneOwjaSl2MOthCVGKPr7ugzwW2HreZwLpBbtS5w5DtUbMC51jxl51sEM59vPrt8RAelfICAnaXY1PJw0/9hMUb1CXv1D/DggAuQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 198.47.23.194) smtp.rcpttodomain=lists.infradead.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=wENkkocfv33Eu+N1AJY8biL8WJvvKj0EPHbFigieoFU=; b=qKh86olkm40m9iJhTwS1VouvDMpKsYu82iYWYezya6Ihy2NWb6aKv4pahUMFsxfVi66jaVW5tajrLhmLVpi/F9McuLckUvuxtwqDRC0Tb9ngAuXQB8ioXgJ26z3HG/5zgabrR+LT2sMynVyDJ1taoUQnKwJwYLezQHGAbxPcBLY= Received: from BL1PR13CA0437.namprd13.prod.outlook.com (2603:10b6:208:2c3::22) by SJ0PR10MB6423.namprd10.prod.outlook.com (2603:10b6:a03:44d::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9891.15; Wed, 6 May 2026 14:09:30 +0000 Received: from MN1PEPF0000F0DE.namprd04.prod.outlook.com (2603:10b6:208:2c3:cafe::60) by BL1PR13CA0437.outlook.office365.com (2603:10b6:208:2c3::22) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.20.9913.6 via Frontend Transport; Wed, 6 May 2026 14:09:29 +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 MN1PEPF0000F0DE.mail.protection.outlook.com (10.167.242.36) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9891.9 via Frontend Transport; Wed, 6 May 2026 14:09:28 +0000 Received: from DLEE210.ent.ti.com (157.170.170.112) 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 15.2.2562.37; Wed, 6 May 2026 09:09:26 -0500 Received: from DLEE211.ent.ti.com (157.170.170.113) by DLEE210.ent.ti.com (157.170.170.112) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20; Wed, 6 May 2026 09:09:26 -0500 Received: from lelvem-mr06.itg.ti.com (10.180.75.8) by DLEE211.ent.ti.com (157.170.170.113) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20 via Frontend Transport; Wed, 6 May 2026 09:09:26 -0500 Received: from toolbox.dhcp.ti.com (uda0492258.dhcp.ti.com [10.24.73.74]) by lelvem-mr06.itg.ti.com (8.18.1/8.18.1) with ESMTP id 646E8IWu1221395; Wed, 6 May 2026 09:09:19 -0500 From: Siddharth Vadapalli To: , , , , , , , , , , , , , , , , , , CC: , , , , , , Subject: [PATCH v2 09/13] arm64: dts: ti: k3-j721e-beagleboneai64: fix USB clocking for compliance Date: Wed, 6 May 2026 19:39:41 +0530 Message-ID: <20260506141040.1368918-10-s-vadapalli@ti.com> X-Mailer: git-send-email 2.51.1 In-Reply-To: <20260506141040.1368918-1-s-vadapalli@ti.com> References: <20260506141040.1368918-1-s-vadapalli@ti.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-C2ProcessedOrg: 333ef613-75bf-4e12-a4b1-8e3623f5dcea X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MN1PEPF0000F0DE:EE_|SJ0PR10MB6423:EE_ X-MS-Office365-Filtering-Correlation-Id: b4bfce4a-b4d8-426d-8d91-08deab79160d X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700016|376014|7416014|1800799024|82310400026|921020|56012099003|22082099003|18002099003; X-Microsoft-Antispam-Message-Info: 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 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)(36860700016)(376014)(7416014)(1800799024)(82310400026)(921020)(56012099003)(22082099003)(18002099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: YLq0iUTZn257oFfE2Qo6+MEhLIAtGXmt0Vkqj1bgBb1CvThuoQ++DV9EJoCQHxyby15lsQSNskcxx5SCs+zXiZgVZfsfpxpH1z9B2tDqRe+kgjrlB4XhFERkx1y6E2oP26P/L9MwQmF1GU+9yXys7J9umUiIsveb4gbl/+WMfHAYGBrZNsKKUVSL00LY6gmvgvVzLhonnPbU2PXxhJe4O/Bo+gkUdHlMtcLQlkFvXYuXCqPcdppd2U9HA3CWE/fomx12o2go9YdSa7c4FYjE+wZB3hNtxCClETioOPIoN0AH3g6j54oTKiKk3PYrSkl7+VL1HFRX5zHc4FzHTn1/lmcxL3KTG1Qn/aHM71qcwxrLJ6TVXjKm533cpZlvjdvrw0z3D+bILMzAW6GtOOlVWybuKUYmKB0EwUSGGb4x/gcChKIvn5zTFE6ofitKtqmJ X-OriginatorOrg: ti.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 May 2026 14:09:28.1393 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: b4bfce4a-b4d8-426d-8d91-08deab79160d 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: MN1PEPF0000F0DE.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR10MB6423 According to section "6.5.3 Normative Spread Spectrum Clocking (SSC)" of the USB 3.2 Specification, SSC should be enabled by default. This protects against EMI violations. Hence, enable internal SSC for USB SuperSpeed. Fixes: fae14a1cb8dd ("arm64: dts: ti: Add k3-j721e-beagleboneai64") Cc: Signed-off-by: Siddharth Vadapalli --- v1: https://lore.kernel.org/r/20260505110631.1144200-10-s-vadapalli@ti.com/ No changes since v1. .../arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts b/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts index 8040b6528c18..1e87c6cf146a 100644 --- a/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts +++ b/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts @@ -578,6 +578,11 @@ &serdes_ln_ctrl { &serdes_wiz3 { typec-dir-gpios = <&main_gpio1 3 GPIO_ACTIVE_LOW>; typec-dir-debounce-ms = <700>; /* TUSB321, tCCB_DEFAULT 133 ms */ + ti,core-clk-sel = <1>; /* Select internal reference clock */ + ti,ssc-enable; /* Enable SSC */ + ti,ssc-type = <1>; /* 1 for Downspread */ + ti,ssc-frequency-hz = <33000>; /* 33 KHz */ + ti,ssc-depth-per-mil = <5>; /* 0.5% depth */ }; &serdes3 { @@ -586,6 +591,7 @@ serdes3_usb_link: phy@0 { cdns,num-lanes = <2>; #phy-cells = <0>; cdns,phy-type = ; + cdns,ssc-mode = <2>; /* 2 for internal SSC */ resets = <&serdes_wiz3 1>, <&serdes_wiz3 2>; }; }; @@ -621,12 +627,21 @@ &usb0 { phy-names = "cdns3,usb3-phy"; }; +&serdes_wiz2 { + ti,core-clk-sel = <1>; /* Select internal reference clock */ + ti,ssc-enable; /* Enable SSC */ + ti,ssc-type = <1>; /* 1 for Downspread */ + ti,ssc-frequency-hz = <33000>; /* 33 KHz */ + ti,ssc-depth-per-mil = <5>; /* 0.5% depth */ +}; + &serdes2 { serdes2_usb_link: phy@1 { reg = <1>; cdns,num-lanes = <1>; #phy-cells = <0>; cdns,phy-type = ; + cdns,ssc-mode = <2>; /* 2 for internal SSC */ resets = <&serdes_wiz2 2>; }; }; -- 2.51.1