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Mon, 31 Aug 2026 11:58:59 -0700 From: Wayne Chang To: , , , , , , , , CC: , , , , , Subject: [PATCH V2 5/8] phy: tegra: xusb: Increase timeout for USB2_TRK_COMPLETED polling Date: Tue, 1 Sep 2026 02:58:32 +0800 Message-ID: <20260831185835.3732707-6-waynec@nvidia.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20260831185835.3732707-1-waynec@nvidia.com> References: <20260831185835.3732707-1-waynec@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SA2PEPF00003AE9:EE_|SA3PR12MB9179:EE_ X-MS-Office365-Filtering-Correlation-Id: f1c4ba78-671e-4ff1-f518-08df0791ff45 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|23010399003|36860700016|82310400026|7416014|376014|1800799024|56012099006|10067099003|11063799006|18002099003|22082099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.161;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge2.nvidia.com;CAT:NONE;SFS:(13230040)(23010399003)(36860700016)(82310400026)(7416014)(376014)(1800799024)(56012099006)(10067099003)(11063799006)(18002099003)(22082099003);DIR:OUT;SFP:1101; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org On Tegra264, the UTMI bias tracking circuit runs at 1 MHz and needs more cycles for the biases to settle than on earlier SoCs such as Tegra234. The existing timeout is therefore not long enough and can cause spurious polling failures during bias pad power-on. Therefore, increase the timeout to 200 cycles to support Tegra264 devices Signed-off-by: Wayne Chang --- V1 -> V2: No change drivers/phy/tegra/xusb-tegra186.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/phy/tegra/xusb-tegra186.c b/drivers/phy/tegra/xusb-tegra186.c index 800be0cbb3f9..9c1bcd4a72ac 100644 --- a/drivers/phy/tegra/xusb-tegra186.c +++ b/drivers/phy/tegra/xusb-tegra186.c @@ -636,7 +636,7 @@ static void tegra186_utmi_bias_pad_power_on(struct tegra_xusb_padctl *padctl) if (padctl->soc->poll_trk_completed) { err = padctl_readl_poll(padctl, XUSB_PADCTL_USB2_BIAS_PAD_CTL1, - USB2_TRK_COMPLETED, USB2_TRK_COMPLETED, 100); + USB2_TRK_COMPLETED, USB2_TRK_COMPLETED, 200); if (err) { /* The failure with polling on trk complete will not * cause the failure of powering on the bias pad. -- 2.25.1 -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy