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/openbmc/linux/drivers/usb/dwc3/ |
H A D | core.c | 9ba3aca8 Fri Aug 09 14:15:52 CDT 2019 Thinh Nguyen <Thinh.Nguyen@synopsys.com> usb: dwc3: Disable phy suspend after power-on reset
For DRD controllers, the programming guide recommended that GUSB3PIPECTL.SUSPENDABLE and GUSB2PHYCFG.SUSPHY to be cleared after power-on reset and only set after the controller initialization is completed. This can be done after device soft-reset in dwc3_core_init(). This patch makes sure to clear GUSB3PIPECTL.SUSPENDABLE and GUSB2PHYCFG.SUSPHY before core initialization and only set them after the device soft-reset is completed.
Reference: DWC_usb3 3.30a and DWC_usb31 1.90a programming guide section 1.2.49 and 1.2.45
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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