diff options
Diffstat (limited to 'drivers/usb/dwc3/core.c')
| -rw-r--r-- | drivers/usb/dwc3/core.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index a1f99c3b5f37..f0a9bb5754a3 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -781,6 +781,24 @@ static int dwc3_hs_phy_setup(struct dwc3 *dwc, int index) return 0; } +static void dwc3_ulpi_setup(struct dwc3 *dwc) +{ + int index; + u32 reg; + + /* Don't do anything if there is no ULPI PHY */ + if (!dwc->ulpi) + return; + + if (dwc->enable_usb2_transceiver_delay) { + for (index = 0; index < dwc->num_usb2_ports; index++) { + reg = dwc3_readl(dwc, DWC3_GUSB2PHYCFG(index)); + reg |= DWC3_GUSB2PHYCFG_XCVRDLY; + dwc3_writel(dwc, DWC3_GUSB2PHYCFG(index), reg); + } + } +} + /** * dwc3_phy_setup - Configure USB PHY Interface of DWC3 Core * @dwc: Pointer to our controller context structure @@ -1355,6 +1373,8 @@ static int dwc3_core_init(struct dwc3 *dwc) dwc->ulpi_ready = true; } + dwc3_ulpi_setup(dwc); + if (!dwc->phys_ready) { ret = dwc3_core_get_phy(dwc); if (ret) |