Rockchip

toolchain

partial (NPU SDK on GitHub but proprietary RKNN license + prebuilt blobs, rknpu kernel driver open)

datasheets

public (full TRM + datasheet public, no NDA)

blobs

required (proprietary GPU/NPU firmware)

Documentation is unusually open (full TRM and datasheet public) and the RKNN toolkit is openly distributed, but the SDK ships as prebuilt binaries under a proprietary license with closed firmware.

• https://www.rock-chips.com/a/en/products/RK35_Series/2022/0926/1660.html recorded 2026-06-22

  official RK3588 page: 8-core A76+A55, 6 TOPS triple-core NPU, Mali-G610 MC4

• https://github.com/airockchip/rknn-toolkit2/blob/master/LICENSE recorded 2026-06-22

  SDK under a proprietary RKNN SDK License