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The peer-hub is used to model the relationship between the USB 2 and USB
3 hub. However, it is possible to only connect USB 2 without having
USB 3. Therefore, the peer-hub property should not be marked as required.
Signed-off-by: Stefan Eichenberger <stefan.eichenberger@toradex.com>
Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/20240130073505.8916-1-eichest@gmail.com

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>