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usb: xhci-dwc3: Add support for dis_u2_susphy_quirk

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This quirk is necessary for the Amlogic GXL SoCs otherwise the
Port 2 PHY doesn't get out of suspend and U-Boot resets the board after:

XHCI timeout on event type 33... cannot recover.
BUG: failure at drivers/usb/host/xhci-ring.c:474/xhci_wait_for_event()!
BUG!

This quirk is also handled in the dwc3 core code, but until the
xhci-dwc3 driver uses the dwc3 core, the quirk must be handled here
to fix USB support on the Amlogic libretech-cc and libretech-ac board
when a device is only plugged in the OTG port.

Cc: Yuri Frolov <crashing.kernel@gmail.com>
Cc: Bin Meng <bmeng.cn@gmail.com>
Fixes: dc9cdf859e ("usb: dwc3: Add DWC3 controller driver support")
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Neil Armstrong 2019-09-09 18:52:39 +00:00
parent c705fc3b40
commit b35b807682
1 changed files with 3 additions and 0 deletions
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3
drivers/usb/host/xhci-dwc3.c
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@ -150,6 +150,9 @@ static int xhci_dwc3_probe(struct udevice *dev)
if (dev_read_bool(dev, "snps,dis-u2-freeclk-exists-quirk"))
reg &= ~DWC3_GUSB2PHYCFG_U2_FREECLK_EXISTS;
if (dev_read_bool(dev, "snps,dis_u2_susphy_quirk"))
reg &= ~DWC3_GUSB2PHYCFG_SUSPHY;
writel(reg, &dwc3_reg->g_usb2phycfg[0]);
dr_mode = usb_get_dr_mode(dev_of_offset(dev));