usb: dwc3: Update maximum_speed for SuperSpeedPlus (2c7f1bd9) · Commits · 戴 / test

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:

John Youn <johnyoun@synopsys.com> Signed-off-by:

Felipe Balbi <balbi@kernel.org>

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);

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