[PATCH 1/3] usb: dwc3: Set GUSB2PHYCFG.ENBLSLPM

[Thinh Nguyen]

GUSB2PHYCFG.ENBLSLPM enables the controller to assert low power signals
to the PHY. Unless disabled via device property, explicitly set
GUSB2PHYCFG.ENBLSLPM as it may not be set by default.

Signed-off-by: Thinh Nguyen <thi...@synopsys.com>
---
 drivers/usb/dwc3/core.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index becfbb87f791..a4068a7b95dd 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -661,6 +661,8 @@ static int dwc3_phy_setup(struct dwc3 *dwc)
 
        if (dwc->dis_enblslpm_quirk)
                reg &= ~DWC3_GUSB2PHYCFG_ENBLSLPM;
+       else
+               reg |= DWC3_GUSB2PHYCFG_ENBLSLPM;
 
        if (dwc->dis_u2_freeclk_exists_quirk)
                reg &= ~DWC3_GUSB2PHYCFG_U2_FREECLK_EXISTS;
-- 
2.11.0