This GPU is found in the TI AM68 family of SoCs, with initial support added to the k3-j721s2 devicetree and tested on a TI SK-AM68 board. A suitable firmware binary can currently be found in the IMG linux-firmware repository[1] as powervr/rogue_36.53.104.796_v1.fw. A merge request will be sent out for this within the next few weeks. No new UAPI will be necessary for this platform as it is sufficiently similar to the already supported AXE-1-16M. The firmware successfully boots with basic job submission appearing to work correctly, as tested with a few of Sascha Willems' Vulkan demos[2]. Note these do not necessarily render correctly due to incomplete UMD support. UMD support is still a work in progress. The branch at [3] is nearly feature complete from a Vulkan perspective. We're currently undertaking a significant rework of the compiler to better accommodate this and other Rogue GPUs which means we can't do more comprehensive driver testing at this point. However, we expect to send a Mesa merge request for the initial version of the compiler (capable of passing some of the Vulkan CTS smoke tests) within the next few days, with a fully functional version of the compiler in place by the end of the year. There are several dt-bindings changes at the beginning of this series. We expect the result to be versatile enough to handle all Imagination Rogue GPUs while being a strong foundation to build bindings for the newer Volcanic architecture (for which we're currently developing support). [1]: https://gitlab.freedesktop.org/imagination/linux-firmware/-/tree/powervr [2]: https://github.com/SaschaWillems/Vulkan [3]: https://gitlab.freedesktop.org/imagination/mesa/-/tree/dev/bxs --- Changes in v2: - Clarified justification for compatible strings (P1) - Simplified clocks constraints (P2) - Simplified power-domains constraints (P3/P4) - Use normal reg syntax for 64-bit values (P8/P21) - Link to v1: https://lore.kernel.org/r/20241105-sets-bxs-4-64-patch-v1-v1-0-4ed30e865892@xxxxxxxxxx --- Matt Coster (20): dt-bindings: gpu: img: More explicit compatible strings dt-bindings: gpu: img: Further constrain clocks dt-bindings: gpu: img: Power domain details dt-bindings: gpu: img: Allow dma-coherent drm/imagination: Use more specific compatible strings drm/imagination: Add power domain control arm64: dts: ti: k3-am62: New GPU binding details dt-bindings: gpu: img: Add BXS-4-64 devicetree bindings drm/imagination: Revert to non-threaded IRQs drm/imagination: Remove firmware enable_reg drm/imagination: Rename event_mask -> status_mask drm/imagination: Make has_fixed_data_addr a value drm/imagination: Use a lookup table for fw defs drm/imagination: Use callbacks for fw irq handling drm/imagination: Add register required for RISC-V firmware drm/imagination: Move ELF fw utils to common file drm/imagination: Add platform overrides infrastructure drm/imagination: Add device_memory_force_cpu_cached override drm/imagination: Add support for TI AM68 GPU arm64: dts: ti: k3-j721s2: Add GPU node Sarah Walker (1): drm/imagination: Add RISC-V firmware processor support .../devicetree/bindings/gpu/img,powervr-rogue.yaml | 107 ++++++++++++-- arch/arm64/boot/dts/ti/k3-am62-main.dtsi | 3 +- arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi | 12 ++ drivers/gpu/drm/imagination/Makefile | 2 + drivers/gpu/drm/imagination/pvr_ccb.c | 25 +++- drivers/gpu/drm/imagination/pvr_device.c | 130 ++++++++-------- drivers/gpu/drm/imagination/pvr_device.h | 77 +++++++++- drivers/gpu/drm/imagination/pvr_drv.c | 58 +++++++- drivers/gpu/drm/imagination/pvr_fw.c | 26 +++- drivers/gpu/drm/imagination/pvr_fw.h | 85 +++++------ drivers/gpu/drm/imagination/pvr_fw_meta.c | 23 +-- drivers/gpu/drm/imagination/pvr_fw_mips.c | 82 ++--------- drivers/gpu/drm/imagination/pvr_fw_riscv.c | 163 +++++++++++++++++++++ drivers/gpu/drm/imagination/pvr_fw_startstop.c | 21 +++ drivers/gpu/drm/imagination/pvr_fw_util.c | 67 +++++++++ drivers/gpu/drm/imagination/pvr_gem.c | 3 + drivers/gpu/drm/imagination/pvr_gem.h | 7 +- drivers/gpu/drm/imagination/pvr_mmu.c | 7 +- drivers/gpu/drm/imagination/pvr_power.c | 118 ++++++++++++++- drivers/gpu/drm/imagination/pvr_power.h | 3 + drivers/gpu/drm/imagination/pvr_queue.c | 23 ++- drivers/gpu/drm/imagination/pvr_rogue_cr_defs.h | 17 ++- drivers/gpu/drm/imagination/pvr_rogue_riscv.h | 41 ++++++ 23 files changed, 864 insertions(+), 236 deletions(-) --- base-commit: d78f0ee0406803cda8801fd5201746ccf89e5e4a change-id: 20241021-sets-bxs-4-64-patch-v1-44cdf9cc555f
