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.ker...@gmail.com>
Cc: Bin Meng <bmeng...@gmail.com>
Fixes: dc9cdf859e ("usb: dwc3: Add DWC3 controller driver support")
Signed-off-by: Neil Armstrong <narmstr...@baylibre.com>
---
drivers/usb/host/xhci-dwc3.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/usb/host/xhci-dwc3.c b/drivers/usb/host/xhci-dwc3.c
index 9e8cae7ae4..55a1b22cf6 100644
--- a/drivers/usb/host/xhci-dwc3.c
+++ b/drivers/usb/host/xhci-dwc3.c
@@ -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));
--
2.17.1
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