diff mbox series

[v2,2/3] usb: host: xhci-plat: Add device property to set XHCI_SKIP_PHY_INIT quirk

Message ID 1636353710-25582-3-git-send-email-quic_c_sanm@quicinc.com (mailing list archive)
State Not Applicable
Headers show
Series Skip phy initialization for DWC3 USB Controllers | expand

Commit Message

Sandeep Maheswaram Nov. 8, 2021, 6:41 a.m. UTC
Add device property usb-skip-phy-init to check and set XHCI_SKIP_PHY_INIT
quirk.
Runtime suspend of phy drivers was failing from DWC3 driver as
runtime usage value is 2 because the phy is initialized from
DWC3 core and HCD core.
Some controllers like DWC3 and CDNS3 manage phy in their core drivers.
This property can be set to avoid phy initialization in HCD core.

Signed-off-by: Sandeep Maheswaram <quic_c_sanm@quicinc.com>
---
 drivers/usb/host/xhci-plat.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index c1edcc9..2a45f89 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -323,6 +323,9 @@  static int xhci_plat_probe(struct platform_device *pdev)
 		if (device_property_read_bool(tmpdev, "quirk-broken-port-ped"))
 			xhci->quirks |= XHCI_BROKEN_PORT_PED;
 
+		if (device_property_read_bool(tmpdev, "usb-skip-phy-init"))
+			xhci->quirks |= XHCI_SKIP_PHY_INIT;
+
 		device_property_read_u32(tmpdev, "imod-interval-ns",
 					 &xhci->imod_interval);
 	}