Hello Bastian, As a newbie in kernel development, I'm facing the same issue about subdev registration. I'm trying to capture some raw video from a SAA7113 connected to the ISP of an omap3530. May I please have your help with this problem? root@cm-t35:~# modprobe iommu [ 8409.776123] omap-iommu omap-iommu.0: isp registered root@cm-t35:~# modprobe omap3_isp [ 8451.821533] omap3isp omap3isp: Revision 2.0 found [ 8451.827056] omap-iommu omap-iommu.0: isp: version 1.1 [ 8453.291992] isp_register_subdev_group: Unable to register subdev saa7113 Regards LoÃc Akue -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html