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The port driver sets this bit for an alternate mode description to indicate support for the mode selection feature. Once set, individual Alt Mode drivers will no longer attempt to activate their respective modes within their probe functions. This prevents race conditions and non-prioritized activation. The bit is not set by default. If left unset, the system retains the current behavior where Alt Mode drivers manage their own activation logic. Signed-off-by: Andrei Kuchynski <akuchynski@chromium.org> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Link: https://patch.msgid.link/20260119131824.2529334-6-akuchynski@chromium.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>