The controller min frame duration is used to rate limit how often we run IPAs. Historically this has been set to 33333us, meaning that the algorithms effectively skip frames when the camera is running faster than 30fps. This patch adds a small amount of plumbing that allows this value to be set in the Raspberry Pi configuration file. Some applications or platforms (such as Pi 5) are easily capable of running these more often, should there be a need to do so. Signed-off-by: David Plowman <david.plowman@raspberrypi.com> Reviewed-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>