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-rw-r--r--drivers/usb/mtu3/mtu3.h1
-rw-r--r--drivers/usb/mtu3/mtu3_plat.c21
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);