For going along with kernel DRM driver changes expected for the Linux 6.16 kernel, the Imagination PowerVR BXS-4-64 GPU firmware has now been upstreamed to linux-firmware.git for readying that open-source driver support for this PowerVR Rogue GPU.
Imagination Tech engineers have been working on open-source PowerVR driver support for the BXS-4-64 GPU as found within the TI AM68. That material is in drm-misc-next ahead of the Linux 6.16 cycle while now the firmware binary has been upstreamed to linux-firmware.git as the other piece needed to enjoy working GPU acceleration with this Rogue GPU.
Working with the open-source PowerVR DRM kernel driver is then the Mesa PowerVR Vulkan driver for enabling Vulkan API use or OpenGL if going through Zink. Those interested in the 155KB binary firmware blob needed for this GPU support can find it via this commit.
