diff options
Diffstat (limited to 'drivers/usb/mtu3')
-rw-r--r-- | drivers/usb/mtu3/mtu3.h | 1 | ||||
-rw-r--r-- | drivers/usb/mtu3/mtu3_plat.c | 21 |
2 files changed, 20 insertions, 2 deletions
diff --git a/drivers/usb/mtu3/mtu3.h b/drivers/usb/mtu3/mtu3.h index ba9df719f363..aa6fd6a51221 100644 --- a/drivers/usb/mtu3/mtu3.h +++ b/drivers/usb/mtu3/mtu3.h @@ -225,6 +225,7 @@ struct ssusb_mtk { /* common power & clock */ struct regulator *vusb33; struct clk *sys_clk; + struct clk *ref_clk; /* otg */ struct otg_switch_mtk otg_switch; enum usb_dr_mode dr_mode; diff --git a/drivers/usb/mtu3/mtu3_plat.c b/drivers/usb/mtu3/mtu3_plat.c index 63448595c209..19a345d6687d 100644 --- a/drivers/usb/mtu3/mtu3_plat.c +++ b/drivers/usb/mtu3/mtu3_plat.c @@ -123,7 +123,13 @@ static int ssusb_rscs_init(struct ssusb_mtk *ssusb) ret = clk_prepare_enable(ssusb->sys_clk); if (ret) { dev_err(ssusb->dev, "failed to enable sys_clk\n"); - goto clk_err; + goto sys_clk_err; + } + + ret = clk_prepare_enable(ssusb->ref_clk); + if (ret) { + dev_err(ssusb->dev, "failed to enable ref_clk\n"); + goto ref_clk_err; } ret = ssusb_phy_init(ssusb); @@ -143,8 +149,10 @@ static int ssusb_rscs_init(struct ssusb_mtk *ssusb) phy_err: ssusb_phy_exit(ssusb); phy_init_err: + clk_disable_unprepare(ssusb->ref_clk); +ref_clk_err: clk_disable_unprepare(ssusb->sys_clk); -clk_err: +sys_clk_err: regulator_disable(ssusb->vusb33); vusb33_err: @@ -154,6 +162,7 @@ vusb33_err: static void ssusb_rscs_exit(struct ssusb_mtk *ssusb) { clk_disable_unprepare(ssusb->sys_clk); + clk_disable_unprepare(ssusb->ref_clk); regulator_disable(ssusb->vusb33); ssusb_phy_power_off(ssusb); ssusb_phy_exit(ssusb); @@ -216,6 +225,12 @@ static int get_ssusb_rscs(struct platform_device *pdev, struct ssusb_mtk *ssusb) return PTR_ERR(ssusb->sys_clk); } + ssusb->ref_clk = devm_clk_get(dev, "ref_ck"); + if (IS_ERR(ssusb->ref_clk)) { + dev_err(dev, "failed to get ref clock\n"); + return PTR_ERR(ssusb->ref_clk); + } + ssusb->num_phys = of_count_phandle_with_args(node, "phys", "#phy-cells"); if (ssusb->num_phys > 0) { @@ -428,6 +443,7 @@ static int __maybe_unused mtu3_suspend(struct device *dev) ssusb_host_disable(ssusb, true); ssusb_phy_power_off(ssusb); clk_disable_unprepare(ssusb->sys_clk); + clk_disable_unprepare(ssusb->ref_clk); ssusb_wakeup_enable(ssusb); return 0; @@ -445,6 +461,7 @@ static int __maybe_unused mtu3_resume(struct device *dev) ssusb_wakeup_disable(ssusb); clk_prepare_enable(ssusb->sys_clk); + clk_prepare_enable(ssusb->ref_clk); ssusb_phy_power_on(ssusb); ssusb_host_enable(ssusb); |