root@beagleboard:~# media-ctl -p
Opening media device /dev/media0
Enumerating entities
Found 15 entities
Enumerating pads and links
Device topology
- entity 1: OMAP3 ISP CCP2 (2 pads, 2 links)
            type V4L2 subdev subtype Unknown
        pad0: Input v4l2_subdev_open: Failed to open subdev device node

                <- 'OMAP3 ISP CCP2 input':pad0 []
        pad1: Output v4l2_subdev_open: Failed to open subdev device node

                -> 'OMAP3 ISP CCDC':pad0 []

- entity 2: OMAP3 ISP CCP2 input (1 pad, 1 link)
            type Node subtype V4L
        pad0: Output
                -> 'OMAP3 ISP CCP2':pad0 []

- entity 3: OMAP3 ISP CSI2a (2 pads, 2 links)
            type V4L2 subdev subtype Unknown
        pad0: Input v4l2_subdev_open: Failed to open subdev device node

        pad1: Output v4l2_subdev_open: Failed to open subdev device node

                -> 'OMAP3 ISP CSI2a output':pad0 []
                -> 'OMAP3 ISP CCDC':pad0 []

- entity 4: OMAP3 ISP CSI2a output (1 pad, 1 link)
            type Node subtype V4L
        pad0: Input
                <- 'OMAP3 ISP CSI2a':pad1 []

- entity 5: OMAP3 ISP CCDC (3 pads, 8 links)
            type V4L2 subdev subtype Unknown
        pad0: Input v4l2_subdev_open: Failed to open subdev device node

                <- 'OMAP3 ISP CCP2':pad1 []
                <- 'OMAP3 ISP CSI2a':pad1 []
        pad1: Output v4l2_subdev_open: Failed to open subdev device node

                -> 'OMAP3 ISP CCDC output':pad0 []
                -> 'OMAP3 ISP resizer':pad0 []
        pad2: Output v4l2_subdev_open: Failed to open subdev device node

                -> 'OMAP3 ISP preview':pad0 []
                -> 'OMAP3 ISP AEWB':pad0 [IMMUTABLE,ACTIVE]
                -> 'OMAP3 ISP AF':pad0 [IMMUTABLE,ACTIVE]
                -> 'OMAP3 ISP histogram':pad0 [IMMUTABLE,ACTIVE]

- entity 6: OMAP3 ISP CCDC output (1 pad, 1 link)
            type Node subtype V4L
        pad0: Input
                <- 'OMAP3 ISP CCDC':pad1 []

- entity 7: OMAP3 ISP preview (2 pads, 4 links)
            type V4L2 subdev subtype Unknown
        pad0: Input v4l2_subdev_open: Failed to open subdev device node

                <- 'OMAP3 ISP CCDC':pad2 []
                <- 'OMAP3 ISP preview input':pad0 []
        pad1: Output v4l2_subdev_open: Failed to open subdev device node

                -> 'OMAP3 ISP preview output':pad0 []
                -> 'OMAP3 ISP resizer':pad0 []

- entity 8: OMAP3 ISP preview input (1 pad, 1 link)
            type Node subtype V4L
        pad0: Output
                -> 'OMAP3 ISP preview':pad0 []

- entity 9: OMAP3 ISP preview output (1 pad, 1 link)
            type Node subtype V4L
        pad0: Input
                <- 'OMAP3 ISP preview':pad1 []

- entity 10: OMAP3 ISP resizer (2 pads, 4 links)
             type V4L2 subdev subtype Unknown
        pad0: Input v4l2_subdev_open: Failed to open subdev device node

                <- 'OMAP3 ISP CCDC':pad1 []
                <- 'OMAP3 ISP preview':pad1 []
                <- 'OMAP3 ISP resizer input':pad0 []
        pad1: Output v4l2_subdev_open: Failed to open subdev device node

                -> 'OMAP3 ISP resizer output':pad0 []

- entity 11: OMAP3 ISP resizer input (1 pad, 1 link)
             type Node subtype V4L
        pad0: Output
                -> 'OMAP3 ISP resizer':pad0 []

- entity 12: OMAP3 ISP resizer output (1 pad, 1 link)
             type Node subtype V4L
        pad0: Input
                <- 'OMAP3 ISP resizer':pad1 []

- entity 13: OMAP3 ISP AEWB (1 pad, 1 link)
             type V4L2 subdev subtype Unknown
        pad0: Input v4l2_subdev_open: Failed to open subdev device node

                <- 'OMAP3 ISP CCDC':pad2 [IMMUTABLE,ACTIVE]

- entity 14: OMAP3 ISP AF (1 pad, 1 link)
             type V4L2 subdev subtype Unknown
        pad0: Input v4l2_subdev_open: Failed to open subdev device node

                <- 'OMAP3 ISP CCDC':pad2 [IMMUTABLE,ACTIVE]

- entity 15: OMAP3 ISP histogram (1 pad, 1 link)
             type V4L2 subdev subtype Unknown
        pad0: Input v4l2_subdev_open: Failed to open subdev device node

                <- 'OMAP3 ISP CCDC':pad2 [IMMUTABLE,ACTIVE]


root@beagleboard:~#