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usb: dwc3: Set default mode for DWC_usb3 v3.30a and higher 

DWC_usb31 and DWC_usb3 v3.30a and higher do not support OTG mode. If
the controller supports DRD but the dr_mode is not specified or set to
OTG, then set the mode to peripheral.

Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
hifive-unleashed-5.1
Thinh Nguyen 2018-11-02 18:41:42 -07:00 committed by Felipe Balbi
parent ceb94bc52c
commit 89a9cc4751
2 changed files with 6 additions and 4 deletions
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9
drivers/usb/dwc3/core.c
View File

@ -80,11 +80,12 @@ static int dwc3_get_dr_mode(struct dwc3 *dwc)
mode = USB_DR_MODE_PERIPHERAL;
/*
* dwc_usb31 does not support OTG mode. If the controller
* supports DRD but the dr_mode is not specified or set to OTG,
* then set the mode to peripheral.
* DWC_usb31 and DWC_usb3 v3.30a and higher do not support OTG
* mode. If the controller supports DRD but the dr_mode is not
* specified or set to OTG, then set the mode to peripheral.
*/
if (mode == USB_DR_MODE_OTG && dwc3_is_usb31(dwc))
if (mode == USB_DR_MODE_OTG &&
dwc->revision >= DWC3_REVISION_330A)
mode = USB_DR_MODE_PERIPHERAL;
}

1
drivers/usb/dwc3/core.h
View File

@ -1107,6 +1107,7 @@ struct dwc3 {
#define DWC3_REVISION_290A 0x5533290a
#define DWC3_REVISION_300A 0x5533300a
#define DWC3_REVISION_310A 0x5533310a
#define DWC3_REVISION_330A 0x5533330a
/*
* NOTICE: we're using bit 31 as a "is usb 3.1" flag. This is really