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client-ip=165.204.84.17; helo=SATLEXMB03.amd.com; pr=C Received: from SATLEXMB03.amd.com (165.204.84.17) by SA2PEPF00003AEA.mail.protection.outlook.com (10.167.248.10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.9094.14 via Frontend Transport; Tue, 2 Sep 2025 07:56:37 +0000 Received: from SATLEXMB04.amd.com (10.181.40.145) 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; Tue, 2 Sep 2025 02:56:35 -0500 Received: from localhost (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39 via Frontend Transport; Tue, 2 Sep 2025 02:56:35 -0500 From: Michal Simek To: , , , CC: Radhey Shyam Pandey , Conor Dooley , Krzysztof Kozlowski , Rob Herring , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , "moderated list:ARM/ZYNQ ARCHITECTURE" Subject: [PATCH 2/4] arm64: zynqmp: Revert usb node drive strength and slew rate for zcu106 Date: Tue, 2 Sep 2025 09:56:19 +0200 Message-ID: <85a70cb014ec1f07972fccb60b875596eeaa6b5c.1756799774.git.michal.simek@amd.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Sep 2025 07:56:37.3864 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 1317296e-d0c7-4bf6-ac9a-08dde9f63e65 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: SA2PEPF00003AEA.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL1PR12MB5756 From: Radhey Shyam Pandey On a few zcu106 boards USB devices (Dell MS116 USB Optical Mouse, Dell USB Entry Keyboard) are not enumerated on linux boot due to commit 'b8745e7eb488 ("arm64: zynqmp: Fix usb node drive strength and slew rate")'. To fix it as a workaround revert to working version and then investigate at board level why drive strength from 12mA to 4mA and slew from fast to slow is not working. Signed-off-by: Radhey Shyam Pandey Signed-off-by: Michal Simek --- arch/arm64/boot/dts/xilinx/zynqmp-zcu106-revA.dts | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-zcu106-revA.dts b/arch/arm64/boot/dts/xilinx/zynqmp-zcu106-revA.dts index cd132abf6e00..7f6c87d4d77e 100644 --- a/arch/arm64/boot/dts/xilinx/zynqmp-zcu106-revA.dts +++ b/arch/arm64/boot/dts/xilinx/zynqmp-zcu106-revA.dts @@ -808,8 +808,8 @@ conf-tx { pins = "MIO54", "MIO56", "MIO57", "MIO58", "MIO59", "MIO60", "MIO61", "MIO62", "MIO63"; bias-disable; - drive-strength = <4>; - slew-rate = ; + drive-strength = <12>; + slew-rate = ; }; }; -- 2.43.0