Description
Yes, you will be able to not provide clocks to the ALTASMI_PARALLEL megafuction if it is not actively being used in your design.
You will need to make sure that the busy signal from the ALTASMI_PARALLEL megafuction is de-asserted before the clock is stopped.
When the megafunction is about to begin operation you will need to provide at least one clock cycle before sending in any command and data signals.