[RESEND PATCH 1/6] phy: phy-mt65xx-usb3: add reference clock of usb3 analog phy

[Chunfeng Yun]

usually, the reference clock of usb3 analog phy comes from
26M oscillator directly, but some SoCs are not, add it for
compatibility.

Signed-off-by: Chunfeng Yun <chunfeng....@mediatek.com>
---
 drivers/phy/phy-mt65xx-usb3.c |   36 ++++++++++++++++++++++++++++--------
 1 file changed, 28 insertions(+), 8 deletions(-)

diff --git a/drivers/phy/phy-mt65xx-usb3.c b/drivers/phy/phy-mt65xx-usb3.c
index d972067..fc9a4f0 100644
--- a/drivers/phy/phy-mt65xx-usb3.c
+++ b/drivers/phy/phy-mt65xx-usb3.c
@@ -149,7 +149,8 @@ struct mt65xx_phy_instance {
 struct mt65xx_u3phy {
        struct device *dev;
        void __iomem *sif_base; /* include sif2, but exclude port's */
-       struct clk *u3phya_ref; /* reference clock of usb3 anolog phy */
+       struct clk *u2ref_clk;  /* reference clock of u2 analog phy */
+       struct clk *u3ref_clk;  /* reference clock of u3 analog phy */
        const struct mt65xx_phy_pdata *pdata;
        struct mt65xx_phy_instance **phys;
        int nphys;
@@ -429,11 +430,17 @@ static int mt65xx_phy_init(struct phy *phy)
 {
        struct mt65xx_phy_instance *instance = phy_get_drvdata(phy);
        struct mt65xx_u3phy *u3phy = dev_get_drvdata(phy->dev.parent);
+       struct clk *ref_clk;
        int ret;
 
-       ret = clk_prepare_enable(u3phy->u3phya_ref);
+       if (instance->type == PHY_TYPE_USB2)
+               ref_clk = u3phy->u2ref_clk;
+       else
+               ref_clk = u3phy->u3ref_clk;
+
+       ret = clk_prepare_enable(ref_clk);
        if (ret) {
-               dev_err(u3phy->dev, "failed to enable u3phya_ref\n");
+               dev_err(u3phy->dev, "failed to enable ref clk\n");
                return ret;
        }
 
@@ -464,9 +471,16 @@ static int mt65xx_phy_exit(struct phy *phy)
 {
        struct mt65xx_phy_instance *instance = phy_get_drvdata(phy);
        struct mt65xx_u3phy *u3phy = dev_get_drvdata(phy->dev.parent);
+       struct clk *ref_clk;
 
        phy_instance_exit(u3phy, instance);
-       clk_disable_unprepare(u3phy->u3phya_ref);
+
+       if (instance->type == PHY_TYPE_USB2)
+               ref_clk = u3phy->u2ref_clk;
+       else
+               ref_clk = u3phy->u3ref_clk;
+
+       clk_disable_unprepare(ref_clk);
        return 0;
 }
 
@@ -566,10 +580,16 @@ static int mt65xx_u3phy_probe(struct platform_device 
*pdev)
                return PTR_ERR(u3phy->sif_base);
        }
 
-       u3phy->u3phya_ref = devm_clk_get(dev, "u3phya_ref");
-       if (IS_ERR(u3phy->u3phya_ref)) {
-               dev_err(dev, "error to get u3phya_ref\n");
-               return PTR_ERR(u3phy->u3phya_ref);
+       u3phy->u2ref_clk = devm_clk_get(dev, "u2ref_clk");
+       if (IS_ERR(u3phy->u2ref_clk)) {
+               dev_err(dev, "failed to get u2ref_clk\n");
+               return PTR_ERR(u3phy->u2ref_clk);
+       }
+
+       u3phy->u3ref_clk = devm_clk_get(dev, "u3ref_clk");
+       if (IS_ERR(u3phy->u3ref_clk)) {
+               dev_err(dev, "failed to get u3ref_clk\n");
+               return PTR_ERR(u3phy->u3ref_clk);
        }
 
        port = 0;
-- 
1.7.9.5