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Amelie Delaunay 9f69ec6766 usb: dwc2: gadget: remove D+ pull-up while no vbus with usb-role-switch

[ Upstream commit db638c6500abaffb8f7770b2a69c40d003d54ae1 ]

When using usb-role-switch, D+ pull-up is set as soon as DTCL_SFTDISCON is
cleared, whatever the vbus valid signal state is. The pull-up should not
be set when vbus isn't present (this is determined by the drd controller).

This patch ensures that B-Session (so Peripheral role + vbus valid signal)
is valid before clearing the DCTL_SFTDISCON bit when role switch is used.
Keep original behavior when usb-role-switch isn't used.

Acked-by: Minas Harutyunyan <hminas@synopsys.com>
Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com>
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Link: https://lore.kernel.org/r/20220622160717.314580-1-fabrice.gasnier@foss.st.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2022-08-25 11:45:42 +02:00

core_intr.c

usb: dwc2: Skip clock gating on Samsung SoCs

2021-07-21 09:50:27 +02:00

core.c

USB: dwc2: Add OTG support for Ingenic SoCs.

2022-04-21 19:22:00 +02:00

core.h

USB: dwc2: Add OTG support for Ingenic SoCs.

2022-04-21 19:22:00 +02:00

debug.h

USB: dwc2: Use the correct style for SPDX License Identifier