diff mbox series

[2/6] usb: host: xhci-plat: add quirk for XHCI_NO_64BIT_SUPPORT

Message ID 1591701165-12872-3-git-send-email-jun.li@nxp.com (mailing list archive)
State New, archived
Headers show
Series add NXP imx8mp usb support | expand

Commit Message

Jun Li June 9, 2020, 11:12 a.m. UTC 
Some dwc3 based platforms may also have the problem AC64 bit (bit 0)
of HCCPARAMS1 set to be 1 but the controller actually can't support
64-bit address when SoC integration, so enable XHCI_NO_64BIT_SUPPORT
via dts property "snps,xhci-dis-64bit-support-quirk".

Signed-off-by: Li Jun <jun.li@nxp.com>
---
 drivers/usb/host/xhci-plat.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index 1d4f6f8..f782aea 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -290,6 +290,10 @@  static int xhci_plat_probe(struct platform_device *pdev)
 
 		device_property_read_u32(tmpdev, "imod-interval-ns",
 					 &xhci->imod_interval);
+
+		if (device_property_read_bool(tmpdev,
+					      "snps,xhci-dis-64bit-support-quirk"))
+			xhci->quirks |= XHCI_NO_64BIT_SUPPORT;
 	}
 
 	hcd->usb_phy = devm_usb_get_phy_by_phandle(sysdev, "usb-phy", 0);