From: Patrice Chotard patrice.chotard@st.com
DWC3 dual role mode is selected using DT "dr_mode" property. If not found, DWC3 controller is configured in HOST mode by default
Signed-off-by: Patrice Chotard patrice.chotard@st.com --- drivers/usb/host/xhci-dwc3.c | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/drivers/usb/host/xhci-dwc3.c b/drivers/usb/host/xhci-dwc3.c index b0b9076..ea85834 100644 --- a/drivers/usb/host/xhci-dwc3.c +++ b/drivers/usb/host/xhci-dwc3.c @@ -15,6 +15,7 @@ #include "xhci.h" #include <asm/io.h> #include <linux/usb/dwc3.h> +#include <linux/usb/otg.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -134,6 +135,7 @@ static int xhci_dwc3_probe(struct udevice *dev) struct xhci_hcor *hcor; struct xhci_hccr *hccr; struct dwc3 *dwc3_reg; + enum usb_dr_mode dr_mode;
hccr = (struct xhci_hccr *)plat->dwc3_regs; hcor = (struct xhci_hcor *)((phys_addr_t)hccr + @@ -143,6 +145,13 @@ static int xhci_dwc3_probe(struct udevice *dev)
dwc3_core_init(dwc3_reg);
+ dr_mode = usb_get_dr_mode(dev_of_offset(dev)); + if (dr_mode == USB_DR_MODE_UNKNOWN) + /* by default set dual role mode to HOST */ + dr_mode = USB_DR_MODE_HOST; + + dwc3_set_mode(dwc3_reg, dr_mode); + return xhci_register(dev, hccr, hcor); }