On 30 Jan 2018, at 15:41, Maxime Ripard [off-list ref] wrote:

Since the lanes are not in use, I'm not sure we have to worry about
lanes collision. Simon, would it cause any trouble if we map to lanes
to the same physical lane?

Yes IIRC it would cause trouble.  Due to the internals of the design each
lane needs to have a unique mapping even if it's not in use.--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html