How much bandwidth does Jetson Nano’s ISP support? Can it support 4Kp60?If not, can you recommend other collections
according to Nano Product Design Guide, for your 4k@60-fps use-case, you may enable quad-lane camera, each data lane has a peak bandwidth of up to 1.5 Gbps.
you may also access L4T sources to check reference drivers.
below enable dual IMX219 running at 3264x2464@21-fps on Jetson-Nano.
suggest you may contact with Jetson preferred partners for supported cameras and also camera solutions.