USB: EHCI: ehci-mv: switch the HSIC HCI to HSIC mode

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Turns out the undocumented and reserved bits of port status/control
register of the root port need to be set to use the HCI in HSIC mode.

Typically the firmware does this, but that is not always good enough,
because the bits get lost if the HSIC clock is disabled (e.g. when
ehci-mv is build as a module).

This supplements commit 7b104f890a ("USB: EHCI: ehci-mv: add HSIC
support").

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20200309130014.548168-1-lkundrak@v3.sk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Lubomir Rintel 2020-03-09 14:00:13 +01:00 • committed by Greg Kroah-Hartman

parent 706f4bbf18

commit 6351f1708b

1 changed files with 9 additions and 0 deletions

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drivers/usb/host/ehci-mv.c

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