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Commit 2c7f1bd9 authored by John Youn's avatar John Youn Committed by Felipe Balbi
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usb: dwc3: Update maximum_speed for SuperSpeedPlus 



If the maximum_speed is not set, set it to a known value, either
SuperSpeed or SuperSpeedPlus based on the type of controller we are
using. If we are on DWC_usb31 controller, check the PHY interface to see
if it is capable of SuperSpeedPlus.

Also this check is moved after dwc3_core_init() so that we can check
dwc->revision.

Signed-off-by: default avatarJohn Youn <johnyoun@synopsys.com>
Signed-off-by: default avatarFelipe Balbi <balbi@kernel.org>
parent ee5cd41c

drivers/usb/dwc3/core.c

+13 −4
Original line number Diff line number Diff line
@@ -962,10 +962,6 @@ static int dwc3_probe(struct platform_device *pdev) 
		fladj = pdata->fladj_value;

	}



	/* default to superspeed if no maximum_speed passed */

	if (dwc->maximum_speed == USB_SPEED_UNKNOWN)

		dwc->maximum_speed = USB_SPEED_SUPER;



	dwc->lpm_nyet_threshold = lpm_nyet_threshold;

	dwc->tx_de_emphasis = tx_de_emphasis;
@@ -1016,6 +1012,19 @@ static int dwc3_probe(struct platform_device *pdev) 
		goto err1;

	}



	/* default to superspeed if no maximum_speed passed */

	if (dwc->maximum_speed == USB_SPEED_UNKNOWN) {

		dwc->maximum_speed = USB_SPEED_SUPER;



		/*

		 * default to superspeed plus if we are capable.

		 */

		if (dwc3_is_usb31(dwc) &&

		    (DWC3_GHWPARAMS3_SSPHY_IFC(dwc->hwparams.hwparams3) ==

		     DWC3_GHWPARAMS3_SSPHY_IFC_GEN2))

			dwc->maximum_speed = USB_SPEED_SUPER_PLUS;

	}



	/* Adjust Frame Length */

	dwc3_frame_length_adjustment(dwc, fladj);