usb: dwc3: Set GUSB2PHYCFG.ENBLSLPM

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 <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 2f2048aa5fde13dde439e52236620f9bab603118..077f60baa12d58cfd1ca0497a2292b022fe053c8 100644 (file)
--- 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;