The Arm Ethos-U65/85 NPUs are designed for edge AI inference applications[0].
The driver works with Mesa Teflon. WIP support is available here[1]. The UAPI should also be compatible with the downstream driver stack[2] and Vela compiler though that has not been implemented.
Testing so far has been on i.MX93 boards with Ethos-U65. Support for U85 is still todo. Only minor changes on driver side will be needed for U85 support.
A git tree is here[3].
Rob
[0] https://www.arm.com/products/silicon-ip-cpu?families=ethos%20npus [1] https://gitlab.freedesktop.org/tomeu/mesa.git ethos [2] https://gitlab.arm.com/artificial-intelligence/ethos-u/ [3] git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git ethos
Signed-off-by: Rob Herring (Arm) robh@kernel.org --- Rob Herring (Arm) (2): dt-bindings: npu: Add Arm Ethos-U65/U85 accel: Add Arm Ethos-U NPU driver
.../devicetree/bindings/npu/arm,ethos.yaml | 79 +++ MAINTAINERS | 9 + drivers/accel/Kconfig | 1 + drivers/accel/Makefile | 1 + drivers/accel/ethos/Kconfig | 10 + drivers/accel/ethos/Makefile | 4 + drivers/accel/ethos/ethos_device.h | 186 ++++++ drivers/accel/ethos/ethos_drv.c | 412 ++++++++++++ drivers/accel/ethos/ethos_drv.h | 15 + drivers/accel/ethos/ethos_gem.c | 707 +++++++++++++++++++++ drivers/accel/ethos/ethos_gem.h | 46 ++ drivers/accel/ethos/ethos_job.c | 527 +++++++++++++++ drivers/accel/ethos/ethos_job.h | 41 ++ include/uapi/drm/ethos_accel.h | 262 ++++++++ 14 files changed, 2300 insertions(+) --- base-commit: 19272b37aa4f83ca52bdf9c16d5d81bdd1354494 change-id: 20250715-ethos-3fdd39ef6f19
Best regards, -- Rob Herring (Arm) robh@kernel.org