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Atomic property for setting the power state of the CRTC. When set to 1 the CRTC will actively display content. When set to 0 the CRTC will be powered off. There is no expectation that user-space will reset CRTC resources like the mode and planes when setting ACTIVE to 0. User-space can rely on an ACTIVE change to 1 to never fail an atomic test as long as no other property has changed. If a change to ACTIVE fails an atomic test, this is a driver bug. For this reason setting ACTIVE to 0 must not release internal resources (like reserved memory bandwidth or clock generators). Note that the legacy DPMS property on connectors is internally routed to control this property for atomic drivers.