linux-kernel - [PATCH v3 08/11] phy: phy-mtk-tphy: make the ref clock optional

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Message-ID: <1568884242-22775-8-git-send-email-chunfeng.yun@mediatek.com>
Date:   Thu, 19 Sep 2019 17:10:39 +0800
From:   Chunfeng Yun <chunfeng.yun@...iatek.com>
To:     Kishon Vijay Abraham I <kishon@...com>,
        Rob Herring <robh+dt@...nel.org>
CC:     Mark Rutland <mark.rutland@....com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Chunfeng Yun <chunfeng.yun@...iatek.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>
Subject: [PATCH v3 08/11] phy: phy-mtk-tphy: make the ref clock optional

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@...iatek.com>
---
v2~3: no changes
---
 drivers/phy/mediatek/phy-mtk-tphy.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/phy/mediatek/phy-mtk-tphy.c b/drivers/phy/mediatek/phy-mtk-tphy.c
index 4a2dc92f10f5..96c62e3a3300 100644
--- a/drivers/phy/mediatek/phy-mtk-tphy.c
+++ b/drivers/phy/mediatek/phy-mtk-tphy.c
@@ -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);
-- 
2.23.0