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phy: tegra: xusb: Use devm_clk_get_optional to fetch USB2 tracking clock

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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 <singhanc@nvidia.com>
Signed-off-by: Wayne Chang <waynec@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://patch.msgid.link/20260903071937.533646-3-waynec@nvidia.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Sing-Han Chen 2026-09-03 15:19:35 +08:00 committed by Vinod Koul
parent c850a88219
commit 9358936fa1
1 changed files with 1 additions and 1 deletions
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2
drivers/phy/tegra/xusb-tegra186.c
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@ -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);