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phy: phy-mtk-tphy: make the ref clock optional

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Sometimes the reference clock of USB3 PHY comes from oscillator
directly, and no need refer to a fixed-clock in DTS anymore
if make it optional.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
This commit is contained in:
Chunfeng Yun
2020-03-20 19:34:29 +05:30
committed by Kishon Vijay Abraham I
parent 410572ec08
commit 657a9edec0
1 changed files with 1 additions and 1 deletions
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drivers/phy/mediatek/phy-mtk-tphy.c
+1 -1
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@@ -1182,7 +1182,7 @@ static int mtk_tphy_probe(struct platform_device *pdev)
if (tphy->u3phya_ref)
continue;
instance->ref_clk = devm_clk_get(&phy->dev, "ref");
instance->ref_clk = devm_clk_get_optional(&phy->dev, "ref");
if (IS_ERR(instance->ref_clk)) {
dev_err(dev, "failed to get ref_clk(id-%d)\n", port);
retval = PTR_ERR(instance->ref_clk);