diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/dwc3/core.c | 7 | ||||
| -rw-r--r-- | drivers/usb/dwc3/core.h | 13 |
2 files changed, 20 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index fbe446350e28..b769c1faaf03 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -386,6 +386,13 @@ static int dwc3_core_init(struct dwc3 *dwc) } dwc->revision = reg; + /* Handle USB2.0-only core configuration */ + if (DWC3_GHWPARAMS3_SSPHY_IFC(dwc->hwparams.hwparams3) == + DWC3_GHWPARAMS3_SSPHY_IFC_DIS) { + if (dwc->maximum_speed == USB_SPEED_SUPER) + dwc->maximum_speed = USB_SPEED_HIGH; + } + /* issue device SoftReset too */ timeout = jiffies + msecs_to_jiffies(500); dwc3_writel(dwc->regs, DWC3_DCTL, DWC3_DCTL_CSFTRST); diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 57332e3768e4..48fb264065db 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -191,6 +191,19 @@ #define DWC3_GHWPARAMS1_PWROPT(n) ((n) << 24) #define DWC3_GHWPARAMS1_PWROPT_MASK DWC3_GHWPARAMS1_PWROPT(3) +/* Global HWPARAMS3 Register */ +#define DWC3_GHWPARAMS3_SSPHY_IFC(n) ((n) & 3) +#define DWC3_GHWPARAMS3_SSPHY_IFC_DIS 0 +#define DWC3_GHWPARAMS3_SSPHY_IFC_ENA 1 +#define DWC3_GHWPARAMS3_HSPHY_IFC(n) (((n) & (3 << 2)) >> 2) +#define DWC3_GHWPARAMS3_HSPHY_IFC_DIS 0 +#define DWC3_GHWPARAMS3_HSPHY_IFC_UTMI 1 +#define DWC3_GHWPARAMS3_HSPHY_IFC_ULPI 2 +#define DWC3_GHWPARAMS3_HSPHY_IFC_UTMI_ULPI 3 +#define DWC3_GHWPARAMS3_FSPHY_IFC(n) (((n) & (3 << 4)) >> 4) +#define DWC3_GHWPARAMS3_FSPHY_IFC_DIS 0 +#define DWC3_GHWPARAMS3_FSPHY_IFC_ENA 1 + /* Global HWPARAMS4 Register */ #define DWC3_GHWPARAMS4_HIBER_SCRATCHBUFS(n) (((n) & (0x0f << 13)) >> 13) #define DWC3_MAX_HIBER_SCRATCHBUFS 15 |