Commit e518bdd9 authored by Thinh Nguyen's avatar Thinh Nguyen Committed by Felipe Balbi
Browse files

usb: dwc3: core: Print warning on unsupported speed 



The user may have more information to override the HW parameter to
specify the maximum_speed. However, if the user specifies a
maximum_speed that the controller doesn't support, print out a warning.

Signed-off-by: default avatarThinh Nguyen <thinhn@synopsys.com>
Signed-off-by: default avatarFelipe Balbi <balbi@kernel.org>
parent b574ce3e

drivers/usb/dwc3/core.c

+9 −0
Original line number Diff line number Diff line
@@ -1399,8 +1399,17 @@ static void dwc3_check_params(struct dwc3 *dwc) 
	case USB_SPEED_LOW:

	case USB_SPEED_FULL:

	case USB_SPEED_HIGH:

		break;

	case USB_SPEED_SUPER:

		if (hwparam_gen == DWC3_GHWPARAMS3_SSPHY_IFC_DIS)

			dev_warn(dev, "UDC doesn't support Gen 1\n");

		break;

	case USB_SPEED_SUPER_PLUS:

		if ((DWC3_IP_IS(DWC32) &&

		     hwparam_gen == DWC3_GHWPARAMS3_SSPHY_IFC_DIS) ||

		    (!DWC3_IP_IS(DWC32) &&

		     hwparam_gen != DWC3_GHWPARAMS3_SSPHY_IFC_GEN2))

			dev_warn(dev, "UDC doesn't support SSP\n");

		break;

	default:

		dev_err(dev, "invalid maximum_speed parameter %d\n",

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