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@gtxaspec
Created April 27, 2026 10:57
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ingenic encoder blocks
SoC Kernel driver VPU IP Clock Encode Decode
T20 soc_vpu + jz_nvpu NVPU (monolithic) 333 MHz H.264, JPEG H.264, JPEG
T21 soc_vpu + helix Helix (H.264+JPEG enc/dec) 350 MHz H.264, JPEG H.264, JPEG
T23 soc_vpu + helix (+IVDC) Helix (H.264+JPEG enc/dec) 450 MHz H.264, JPEG H.264, JPEG
T30 soc_vpu + helix + radix Helix (H.264+JPEG) + Radix (H.265) 350 MHz H.264, H.265, JPEG H.264, H.265, JPEG
T32 ingenic_vpu + helix + radix JPEG engine + Hera (unified H.264+H.265+JPEG) 500 MHz H.264, H.265, JPEG H.264, H.265, JPEG
T33 ingenic_vpu + helix + radix JPEG engine + Hera (unified H.264+H.265+JPEG) 500 MHz H.264, H.265, JPEG H.264, H.265, JPEG
T31 avpu.ko (Allegro) Allegro AVPU 400-700 MHz H.264, H.265, JPEG H.264, H.265, JPEG
T40 avpu.ko (Allegro EL150) Allegro EL150 400-700 MHz H.264, H.265, JPEG H.264, H.265, JPEG
T41 avpu.ko (Allegro EL200) + helix Allegro EL200 + IVDC (JPEG) 400-700 MHz H.264, H.265, JPEG H.264, H.265, JPEG
A1 ingenic_vpu + helix VC8000D (decode) + JPEG engine (gate only) JPEG only H.264, H.265, JPEG
  • T20/T21/T30 helix+radix are the same IP, just hardcoded conservatively at 333-350 MHz
  • T23 runs at 450 MHz for the same helix IP
  • T32/T33 are not the same; "radix" is really Hera, a unified next-gen block with 20 sub-blocks (vs 16), and "helix" is now just a dedicated JPEG accelerator
  • T31/T40/T41 uses Allegro IP with configurable clocks
  • A1 uses Verisilicon VC8000D for decode
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