AI Engine (AIE) Drivers

drivers/aie is an upper-half character driver for hardware neural processing units. Enable CONFIG_AI_ENGINE. There is no in-tree lower-half or board configuration yet; a platform must implement struct aie_ops_s and call aie_register().

The public header is include/nuttx/aie/ai_engine.h. Ioctl commands:

• AIE_CMD_LOAD — load a model. The argument is a model pointer passed to ops->init(). A second load on the same file returns -EINVAL.

• AIE_CMD_FEED_INPUT — feed one input tensor via ops->feed_input().

• AIE_CMD_GET_OUTPUT — read one output tensor via ops->get_output().

Other ioctl numbers are forwarded to ops->control() when that callback is provided, otherwise -ENOSYS.

This kernel driver is independent of the application-level TinyML packages under Machine Learning Support.