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Mon, 29 Jun 2026 02:34:34 -0700 From: Wayne Chang To: , , , , , , , , CC: , , , , , , Sing-Han Chen Subject: [PATCH 4/8] phy: tegra: xusb: Use devm_clk_get_optional to fetch USB2 tracking clock Date: Mon, 29 Jun 2026 17:34:02 +0800 Message-ID: <20260629093406.1118594-5-waynec@nvidia.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20260629093406.1118594-1-waynec@nvidia.com> References: <20260629093406.1118594-1-waynec@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF0001A0FA:EE_|MN0PR12MB5979:EE_ X-MS-Office365-Filtering-Correlation-Id: 5e0c1a78-5b7f-497c-7fb3-08ded5c1a941 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|23010399003|36860700016|7416014|376014|82310400026|1800799024|18002099003|22082099003|56012099006|11063799006; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.118.232;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge1.nvidia.com;CAT:NONE;SFS:(13230040)(23010399003)(36860700016)(7416014)(376014)(82310400026)(1800799024)(18002099003)(22082099003)(56012099006)(11063799006);DIR:OUT;SFP:1101; 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X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org From: Sing-Han Chen The USB2 PAD tracking clock is an optional clock so use devm_clk_get_optional() so a missing clock in devicetree is represented as NULL and probe can continue. clk_prepare_enable() and clk_disable_unprepare() already treat a NULL clock as a no-op. Signed-off-by: Sing-Han Chen Signed-off-by: Wayne Chang --- 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 60156aea2707..800be0cbb3f9 100644 --- a/drivers/phy/tegra/xusb-tegra186.c +++ b/drivers/phy/tegra/xusb-tegra186.c @@ -1045,7 +1045,7 @@ tegra186_usb2_pad_probe(struct tegra_xusb_padctl *padctl, goto out; } - priv->usb2_trk_clk = devm_clk_get(&pad->dev, "trk"); + priv->usb2_trk_clk = devm_clk_get_optional(&pad->dev, "trk"); if (IS_ERR(priv->usb2_trk_clk)) { err = PTR_ERR(priv->usb2_trk_clk); dev_dbg(&pad->dev, "failed to get usb2 trk clock: %d\n", err); -- 2.25.1 -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy