WKUP_ALERT interrupt should be unmask when lpm mode is enabled.
This interrupt is asserted when the device is in L1 for the duration
mentioned in GREFCLK.SOF_CNN_WKUP_ALERT. This is used to alert SW to
initiate Remote wake up so that the device resumes in time in order not
to lose sync with the host frame number.
Signed-off-by: Grigor Tovmasyan <tovma...@synopsys.com>
---
drivers/usb/dwc2/gadget.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index 66401ffeb5a2..4f99f2e44a5b 100644
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -4987,6 +4987,10 @@ void dwc2_gadget_init_lpm(struct dwc2_hsotg *hsotg)
val |= hsotg->params.besl ? GLPMCFG_ENBESL : 0;
dwc2_writel(hsotg, val, GLPMCFG);
dev_dbg(hsotg->dev, "GLPMCFG=0x%08x\n", dwc2_readl(hsotg, GLPMCFG));
+
+ /* Unmask WKUP_ALERT Interrupt */
+ if (hsotg->params.service_interval)
+ dwc2_set_bit(hsotg, GINTMSK2, GINTMSK2_WKUP_ALERT_INT_MSK);
}
/**
--
2.11.0
