diff options
Diffstat (limited to 'drivers/usb/dwc3')
| -rw-r--r-- | drivers/usb/dwc3/core.c | 23 | ||||
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 24 |
2 files changed, 23 insertions, 24 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 217547514fa..6910a2d14d9 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -349,6 +349,29 @@ static int __devinit dwc3_core_init(struct dwc3 *dwc) dwc3_cache_hwparams(dwc); + reg = dwc3_readl(dwc->regs, DWC3_GCTL); + reg &= ~DWC3_GCTL_SCALEDOWN(3); + reg &= ~DWC3_GCTL_DISSCRAMBLE; + + switch (DWC3_GHWPARAMS1_EN_PWROPT(dwc->hwparams.hwparams0)) { + case DWC3_GHWPARAMS1_EN_PWROPT_CLK: + reg &= ~DWC3_GCTL_DSBLCLKGTNG; + break; + default: + dev_dbg(dwc->dev, "No power optimization available\n"); + } + + /* + * WORKAROUND: DWC3 revisions <1.90a have a bug + * when The device fails to connect at SuperSpeed + * and falls back to high-speed mode which causes + * the device to enter in a Connect/Disconnect loop + */ + if (dwc->revision < DWC3_REVISION_190A) + reg |= DWC3_GCTL_U2RSTECN; + + dwc3_writel(dwc->regs, DWC3_GCTL, reg); + ret = dwc3_alloc_event_buffers(dwc, DWC3_EVENT_BUFFERS_SIZE); if (ret) { dev_err(dwc->dev, "failed to allocate event buffers\n"); diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index fab4ee0082e..8aff490a1ae 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1155,30 +1155,6 @@ static int dwc3_gadget_start(struct usb_gadget *g, dwc->gadget_driver = driver; dwc->gadget.dev.driver = &driver->driver; - reg = dwc3_readl(dwc->regs, DWC3_GCTL); - - reg &= ~DWC3_GCTL_SCALEDOWN(3); - reg &= ~DWC3_GCTL_DISSCRAMBLE; - - switch (DWC3_GHWPARAMS1_EN_PWROPT(dwc->hwparams.hwparams0)) { - case DWC3_GHWPARAMS1_EN_PWROPT_CLK: - reg &= ~DWC3_GCTL_DSBLCLKGTNG; - break; - default: - dev_dbg(dwc->dev, "No power optimization available\n"); - } - - /* - * WORKAROUND: DWC3 revisions <1.90a have a bug - * when The device fails to connect at SuperSpeed - * and falls back to high-speed mode which causes - * the device to enter in a Connect/Disconnect loop - */ - if (dwc->revision < DWC3_REVISION_190A) - reg |= DWC3_GCTL_U2RSTECN; - - dwc3_writel(dwc->regs, DWC3_GCTL, reg); - reg = dwc3_readl(dwc->regs, DWC3_DCFG); reg &= ~(DWC3_DCFG_SPEED_MASK); reg |= dwc->maximum_speed; |