Merge "phy: qcom-ufs: make ref_clk as optional" (33ab7314) · Commits · e / devices / android_kernel_oneplus_sm8150

drivers/phy/qualcomm/phy-qcom-ufs.c

+25 −10

Original line number	Diff line number	Diff line
		@@ -221,10 +221,12 @@ int ufs_qcom_phy_init_clks(struct ufs_qcom_phy *phy_common)
		__ufs_qcom_phy_clk_get(phy_common->dev, "ref_clk_parent",
		&phy_common->ref_clk_parent, false);

		err = ufs_qcom_phy_clk_get(phy_common->dev, "ref_clk",
		&phy_common->ref_clk);
		if (err)
		goto out;
		/*
		* Some platforms may not have the ON/OFF control for reference clock,
		* hence this clock may be optional.
		*/
		__ufs_qcom_phy_clk_get(phy_common->dev, "ref_clk",
		&phy_common->ref_clk, false);

		/*
		* "ref_aux_clk" is optional and only supported by certain
		@@ -414,12 +416,18 @@ static int ufs_qcom_phy_enable_ref_clk(struct ufs_qcom_phy *phy)
		}
		}

		/*
		* "ref_clk" is optional clock hence make sure that clk reference
		* is available before trying to enable the clock.
		*/
		if (phy->ref_clk) {
		ret = clk_prepare_enable(phy->ref_clk);
		if (ret) {
		dev_err(phy->dev, "%s: ref_clk enable failed %d\n",
		__func__, ret);
		goto out_disable_parent;
		}
		}

		/*
		* "ref_aux_clk" is optional clock and only supported by certain
		@@ -499,7 +507,14 @@ static void ufs_qcom_phy_disable_ref_clk(struct ufs_qcom_phy *phy)
		*/
		if (phy->ref_aux_clk)
		clk_disable_unprepare(phy->ref_aux_clk);

		/*
		* "ref_clk" is optional clock hence make sure that clk
		* reference is available before trying to disable the clock.
		*/
		if (phy->ref_clk)
		clk_disable_unprepare(phy->ref_clk);

		/*
		* "ref_clk_parent" is optional clock hence make sure that clk
		* reference is available before trying to disable the clock.