Use this command to list all available cameras:
libcamera-still --list-cameras
Example output:
$ libcamera-still --list-cameras
Available cameras
-----------------
0 : imx477 [4056x3040] (/base/soc/i2c0mux/i2c@1/imx477@1a)
Modes: 'SRGGB10_CSI2P' : 1332x990 [120.05 fps - (696, 528)/2664x1980 crop]
'SRGGB12_CSI2P' : 2028x1080 [50.03 fps - (0, 440)/4056x2160 crop]
2028x1520 [40.01 fps - (0, 0)/4056x3040 crop]
4056x3040 [10.00 fps - (0, 0)/4056x3040 crop]