From: Felipe Balbi <ba...@kernel.org>
we need to power off the PHY during suspend and
power it back on during resume.
Signed-off-by: Felipe Balbi <ba...@kernel.org>
[nsek...@ti.com: fix call to usb_phy_set_suspend() in dwc3_suspend()]
Signed-off-by: Sekhar Nori <nsek...@ti.com>
Signed-off-by: Roger Quadros <rog...@ti.com>
---
drivers/usb/dwc3/core.c | 23 ++++++++++++++++++++++-
1 file changed, 22 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 17fd8144..44ff68e 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -1162,6 +1162,11 @@ static int dwc3_suspend(struct device *dev)
phy_exit(dwc->usb2_generic_phy);
phy_exit(dwc->usb3_generic_phy);
+ usb_phy_set_suspend(dwc->usb2_phy, 1);
+ usb_phy_set_suspend(dwc->usb3_phy, 1);
+ WARN_ON(phy_power_off(dwc->usb2_generic_phy) < 0);
+ WARN_ON(phy_power_off(dwc->usb3_generic_phy) < 0);
+
pinctrl_pm_select_sleep_state(dev);
return 0;
@@ -1175,11 +1180,21 @@ static int dwc3_resume(struct device *dev)
pinctrl_pm_select_default_state(dev);
+ usb_phy_set_suspend(dwc->usb2_phy, 0);
+ usb_phy_set_suspend(dwc->usb3_phy, 0);
+ ret = phy_power_on(dwc->usb2_generic_phy);
+ if (ret < 0)
+ return ret;
+
+ ret = phy_power_on(dwc->usb3_generic_phy);
+ if (ret < 0)
+ goto err_usb2phy_power;
+
usb_phy_init(dwc->usb3_phy);
usb_phy_init(dwc->usb2_phy);
ret = phy_init(dwc->usb2_generic_phy);
if (ret < 0)
- return ret;
+ goto err_usb3phy_power;
ret = phy_init(dwc->usb3_generic_phy);
if (ret < 0)
@@ -1212,6 +1227,12 @@ static int dwc3_resume(struct device *dev)
err_usb2phy_init:
phy_exit(dwc->usb2_generic_phy);
+err_usb3phy_power:
+ phy_power_off(dwc->usb3_generic_phy);
+
+err_usb2phy_power:
+ phy_power_off(dwc->usb2_generic_phy);
+
return ret;
}
--
2.5.0
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