diff options
Diffstat (limited to 'drivers/usb/dwc2/gadget.c')
| -rw-r--r-- | drivers/usb/dwc2/gadget.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index b2f6da5b65..74ac79abd8 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -3424,8 +3424,11 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg, dwc2_hsotg_init_fifo(hsotg); - if (!is_usb_reset) + if (!is_usb_reset) { dwc2_set_bit(hsotg, DCTL, DCTL_SFTDISCON); + if (hsotg->params.eusb2_disc) + dwc2_set_bit(hsotg, GOTGCTL, GOTGCTL_EUSB2_DISC_SUPP); + } dcfg |= DCFG_EPMISCNT(1); @@ -5316,6 +5319,8 @@ void dwc2_gadget_program_ref_clk(struct dwc2_hsotg *hsotg) int dwc2_gadget_enter_hibernation(struct dwc2_hsotg *hsotg) { u32 gpwrdn; + u32 gusbcfg; + u32 pcgcctl; int ret = 0; /* Change to L2(suspend) state */ @@ -5335,6 +5340,22 @@ int dwc2_gadget_enter_hibernation(struct dwc2_hsotg *hsotg) } gpwrdn = GPWRDN_PWRDNRSTN; + udelay(10); + gusbcfg = dwc2_readl(hsotg, GUSBCFG); + if (gusbcfg & GUSBCFG_ULPI_UTMI_SEL) { + /* ULPI interface */ + 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; + dwc2_writel(hsotg, pcgcctl, PCGCTL); + udelay(10); + + gpwrdn = dwc2_readl(hsotg, GPWRDN); gpwrdn |= GPWRDN_PMUACTV; dwc2_writel(hsotg, gpwrdn, GPWRDN); udelay(10); @@ -5435,6 +5456,11 @@ int dwc2_gadget_exit_hibernation(struct dwc2_hsotg *hsotg, if (reset) dwc2_clear_bit(hsotg, DCFG, DCFG_DEVADDR_MASK); + /* 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 */ gpwrdn = dwc2_readl(hsotg, GPWRDN); gpwrdn &= ~GPWRDN_PMUACTV; |