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Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.12 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.12; helo=SATLEXMB03.amd.com; pr=C Received: from SATLEXMB03.amd.com (165.204.84.12) by SN1PEPF0002BA4E.mail.protection.outlook.com (10.167.242.71) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.8158.14 via Frontend Transport; Mon, 18 Nov 2024 15:08:30 +0000 Received: from SATLEXMB03.amd.com (10.181.40.144) 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 15.1.2507.39; Mon, 18 Nov 2024 09:08:28 -0600 Received: from xhdradheys41.xilinx.com (10.180.168.240) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server id 15.1.2507.39 via Frontend Transport; Mon, 18 Nov 2024 09:08:25 -0600 From: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com> To: <Thinh.Nguyen@synopsys.com>, <gregkh@linuxfoundation.org>, <michal.simek@amd.com>, <robert.hancock@calian.com> CC: <linux-usb@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org>, <linux-kernel@vger.kernel.org>, <git@amd.com>, Neal Frager <neal.frager@amd.com>, <stable@vger.kernel.org>, Radhey Shyam Pandey <radhey.shyam.pandey@amd.com> Subject: [PATCH v2] usb: dwc3: xilinx: make sure pipe clock is deselected in usb2 only mode Date: Mon, 18 Nov 2024 20:38:11 +0530 Message-ID: <1731942491-1992368-1-git-send-email-radhey.shyam.pandey@amd.com> X-Mailer: git-send-email 2.1.1 Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: <linux-usb.vger.kernel.org> List-Subscribe: <mailto:linux-usb+subscribe@vger.kernel.org> List-Unsubscribe: <mailto:linux-usb+unsubscribe@vger.kernel.org> MIME-Version: 1.0 Content-Type: text/plain Received-SPF: None (SATLEXMB03.amd.com: radhey.shyam.pandey@amd.com does not designate permitted sender hosts) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SN1PEPF0002BA4E:EE_|LV2PR12MB5968:EE_ X-MS-Office365-Filtering-Correlation-Id: 640baccf-39e5-4184-66da-08dd07e2dcc4 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|82310400026|36860700013|1800799024; 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[v2] usb: dwc3: xilinx: make sure pipe clock is deselected in usb2 only mode
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diff --git a/drivers/usb/dwc3/dwc3-xilinx.c b/drivers/usb/dwc3/dwc3-xilinx.c index e3738e1610db..a33a42ba0249 100644 --- a/drivers/usb/dwc3/dwc3-xilinx.c +++ b/drivers/usb/dwc3/dwc3-xilinx.c @@ -121,8 +121,11 @@ static int dwc3_xlnx_init_zynqmp(struct dwc3_xlnx *priv_data) * in use but the usb3-phy entry is missing from the device tree. * Therefore, skip these operations in this case. */ - if (!priv_data->usb3_phy) + if (!priv_data->usb3_phy) { + /* Deselect the PIPE Clock Select bit in FPD PIPE Clock register */ + writel(PIPE_CLK_DESELECT, priv_data->regs + XLNX_USB_FPD_PIPE_CLK); goto skip_usb3_phy; + } crst = devm_reset_control_get_exclusive(dev, "usb_crst"); if (IS_ERR(crst)) {