diff options
Diffstat (limited to 'drivers/usb/dwc2/hcd.c')
| -rw-r--r-- | drivers/usb/dwc2/hcd.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index dd5b1c5691..cb54390e7d 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -5525,6 +5525,11 @@ int dwc2_host_enter_hibernation(struct dwc2_hsotg *hsotg) gusbcfg = dwc2_readl(hsotg, GUSBCFG); if (gusbcfg & GUSBCFG_ULPI_UTMI_SEL) { /* ULPI interface */ + udelay(10); + gpwrdn = dwc2_readl(hsotg, GPWRDN); + gpwrdn |= GPWRDN_ULPI_LATCH_EN_DURING_HIB_ENTRY; + dwc2_writel(hsotg, gpwrdn, GPWRDN); + udelay(10); /* Suspend the Phy Clock */ pcgcctl = dwc2_readl(hsotg, PCGCTL); pcgcctl |= PCGCTL_STOPPCLK; @@ -5631,6 +5636,11 @@ int dwc2_host_exit_hibernation(struct dwc2_hsotg *hsotg, int rem_wakeup, dwc2_writel(hsotg, gr->gusbcfg, GUSBCFG); dwc2_writel(hsotg, hr->hcfg, HCFG); + /* Reset ULPI latch */ + gpwrdn = dwc2_readl(hsotg, GPWRDN); + gpwrdn &= ~GPWRDN_ULPI_LATCH_EN_DURING_HIB_ENTRY; + dwc2_writel(hsotg, gpwrdn, GPWRDN); + /* De-assert Wakeup Logic */ if (!(rem_wakeup && hsotg->hw_params.snpsid >= DWC2_CORE_REV_4_30a)) { gpwrdn = dwc2_readl(hsotg, GPWRDN); |