usb: gadget: rcar: Add support for reset controller

Some Renesas SoCs, such as the RZ/G2L, require the USBHS core to
be explicitly deasserted from reset before register access is
possible.

Update the OTG probe to handle a bulk reset controller. To maintain
hardware stability, the reset is deasserted after clocks are
enabled in probe(), and asserted before clocks are disabled
in remove().

Update the error paths in probe to ensures clocks are disabled
if the reset initialization fails.

Reviewed-by: Marek Vasut <[email protected]>
Signed-off-by: Michele Bisogno <[email protected]>

0 files changed, 0 insertions, 0 deletions