Hi Michael, On Wed, Apr 30, 2025 at 11:15:56AM +0200, Michael Riesch via B4 Relay wrote: > + link_freq = v4l2_get_link_freq(csi_dev->source_sd->ctrl_handler, 0, 0); Use the source pad for this, the control handler is there just for compatibility and will be removed soon. -- Sakari Ailus