Commit 9b6c0722 authored Dec 11, 2019 by Bin Liu Committed by Greg Kroah-Hartman Feb 05, 2020

usb: dwc3: turn off VBUS when leaving host mode



[ Upstream commit 09ed259fac621634d51cd986aa8d65f035662658 ]

VBUS should be turned off when leaving the host mode.
Set GCTL_PRTCAP to device mode in teardown to de-assert DRVVBUS pin to
turn off VBUS power.

Fixes: 5f94adfe ("usb: dwc3: core: refactor mode initialization to its own function")
Cc: stable@vger.kernel.org
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent 94fd874c

drivers/usb/dwc3/core.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -936,6 +936,9 @@ static void dwc3_core_exit_mode(struct dwc3 *dwc)
		/* do nothing */
		break;
		}

		/* de-assert DRVVBUS for HOST and OTG mode */
		dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_DEVICE);
		}

		#define DWC3_ALIGN_MASK (16 - 1)