usb: dwc2: disable Link Power Management on STM32MP15 HS OTG

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Link Power Management (LPM) on STM32MP15 OTG HS encounters instabilities
with some Host controllers. OTG core fails to exit L1 state in 200us:
"dwc2 49000000.usb-otg: Failed to exit L1 sleep state in 200us."
Then the device is still not enumerated.

To avoid this issue, disable Link Power Management on STM32MP15 HS OTG.

Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com>
Link: https://lore.kernel.org/r/20210105094855.30763-4-amelie.delaunay@foss.st.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Amelie Delaunay 2021-01-05 10:48:55 +01:00 • committed by Greg Kroah-Hartman

parent f228cb27c5

commit 53febc9569

1 changed files with 4 additions and 0 deletions

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4

drivers/usb/dwc2/params.c

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