Re: [meta-rockchip PATCH v2] add support for upstream RKNPU/RKNN/Rocket HW AI accelerator

Hi all,

On 4/23/26 6:19 PM, Quentin Schulz wrote:
> From: Quentin Schulz <[email protected]>
> 
> This adds support for the NPU (Neural Processing Unit) found on the
> RK3588(S).
> 
> The NPU is supported by a kernel driver (CONFIG_DRM_ACCEL_ROCKET),
> Device Tree nodes (so not all RK3588 devices supported upstream
> necessarily have the NPU declared properly!) and a userspace driver in
> mesa (teflon delegate with rocket gallium driver).
> 
> This adds a config fragment for linux-rockchip kernels such that the
> disabled-by-default Rocket driver is built and enables the Rocket
> gallium mesa driver with the teflon delegate, but only when the user
> requests its support.
> 
> This was tested by running the following:
> 
> """
> wget https://gitlab.freedesktop.org/mesa/mesa/-/raw/main/src/gallium/frontends/teflon/tests/classification.py
> 
> TEFLON_DEBUG=verbose python3 classification.py \
> 	     -i /usr/share/label_image/grace_hopper.bmp \
> 	     -m /usr/share/label_image/mobilenet_v1_1.0_224_quant.tflite \
> 	     -l /usr/share/label_image/labels_mobilenet_quant_v1_224.txt \
> 	     -e /usr/lib/libteflon.so
> """
> 
> from an image built with meta-tensorflow's tensorflow-lite, mesa's
> libteflon, meta-openembedded's python3-pillow and OE-Core's
> python3-numpy packages.
> 
> Note that the Aarch64 RK35xx SoCs all have an NPU, but only RK3588's is
> currently supported in the kernel.
> 
> Signed-off-by: Quentin Schulz <[email protected]>
> ---
> This was tested on RK3588 Jaguar with linux-yocto 6.18 +
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=843b912c7241ed0259f6234243da05e10ce67c0f
> 
> Note this (lightly) depends on
> https://lore.kernel.org/yocto-patches/[email protected]/
> being merged in meta-tensorflow. Another option is to simply add

This has now merged in meta-tensorflow.

Cheers,
Quentin