Rockchip RK3399 / RK3399Pro Series
Legacy RKISP1 driver operation. Combined ISP + CSI architecture for 4K/1080p applications.
- Integrated RKISP1 (CSI + ISP)
- Up to 2 CSI Ports
- ~1.5 Gbps per Lane
- Ideal for 1080p/4K Single/Dual Cam
Rockchip RK3399 / RK3399Pro Series – MIPI CSI-2 / ISP Driver Operation
The RK3399 / RK3399Pro integrate legacy RKISP1, which combines a MIPI CSI-2 receiver (via one or two embedded MIPI PHYs) with the ISP block. According to documentation, RK3399 has two MIPI PHYs: one dedicated to DSI, and up to two used for CSI depending on the board design. Because CSI + ISP are integrated, sensor drivers register directly with the rkisp1 driver; V4L2 sub-devices, device-tree lane definitions (data-lanes, clock-lane), link-frequency, and power/reset domains are used. Each board may expose one or two CSI ports — dual-camera input is possible if both PHYs are exposed. Bandwidth per lane is typically up to ~1.5 Gbps, limiting resolution and frame rate. Realistic camera use on RK3399 is up to single or dual 1080p or modest 4K, depending on pipeline load and memory bandwidth. Claims like “4K60 RAW10/12 and robust multi-stream” are overly optimistic and depend heavily on driver support, sensor, and memory throughput. RK3399 remains popular for cost-sensitive 4K or 1080p single/dual-camera applications where high-end multi-camera setups are not needed.
