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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: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
This commit is contained in:
John Youn 2016-02-05 17:08:59 -08:00 committed by Felipe Balbi
parent ee5cd41c91
commit 2c7f1bd912
1 changed files with 13 additions and 4 deletions
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17
drivers/usb/dwc3/core.c
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@ -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);