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lgirdwood
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Nov 10, 2026
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pls check commit messages have correct line wrapping.
Enable rx_slots=3 alongside tx_slots=3 on the 48 kHz 2-channel SSP2-BT hardware configuration (hw_config.3) so full-duplex 48 kHz Bluetooth SSP offload streams can capture and play back simultaneously. Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Include SSP and Bluetooth offload definitions in sof-hda-generic.conf when ADD_BT=true without altering existing non-BT topologies. Add dedicated SSP2-BT offload topology targets (BT_PCM_ID=20, BT_PCM_NAME=Bluetooth, ADD_BT=true) for ACE 1.5/2.0 and ACE 3.0 HDA platforms (sof-hda-generic-ace1-bt, sof-hda-generic-ace3-bt, sof-hda-generic-ace3-2ch-bt, sof-hda-generic-ace3-4ch-bt) as well as ACE 3.0 / Wildcat Lake RT722 4ch SoundWire platforms (sof-ptl-rt722-4ch-bt and sof-wcl-rt722-4ch-bt). Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Enable CONFIG_DMA_DW_FIFO_PARTITION=y on ACE 1.5 (MTL/ARL-S) matching CAVS 2.5 so dw_dma_setup() partitions the LP-GPDMA hardware FIFO instead of leaving FIFO partition sizes at zero, preventing immediate SSP2-BT GATEWAY_UNDERRUN_DETECTED errors. Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
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Summary
This series enables full-duplex Bluetooth SSP (
SSP2-BT) hardware audio offload topologies (without altering existing non-BT topologies) and fixes ACE 1.5 LP-GPDMA FIFO partitioning required forSSP2-BTstreaming on Arrow Lake / Meteor Lake:topology2: bt-ssp-config: enable rx_slots on 48 kHz hw_config.3(e881e3ceb):rx_slots = 3alongsidetx_slots = 3onhw_config.3(48 kHz 2-channel TDM) so full-duplex 48 kHz Bluetooth SSP offload streams can capture and play back simultaneously.topology2: hda-generic, ace3: add SSP2-BT offload topologies(efcaea63f):<ssp.conf>,<intel/hw_config_cardinal_clk.conf>,<bt-default.conf>, and conditionalplatform/intel/bt-generic.conf(ADD_BT=true) insof-hda-generic.confwithout modifying existing non-BT topologies.SSP2-BT(BT_PCM_ID=20, BT_PCM_NAME=Bluetooth, ADD_BT=true) topology targets for ACE 1.5/2.0 and ACE 3.0 HDA platforms (sof-hda-generic-ace1-bt,sof-hda-generic-ace3-bt,sof-hda-generic-ace3-2ch-bt,sof-hda-generic-ace3-4ch-bt) and ACE 3.0 / Wildcat Lake RT722 4ch SoundWire platforms (sof-ptl-rt722-4ch-bt,sof-wcl-rt722-4ch-bt).app/boards: ace15_mtpm: enable CONFIG_DMA_DW_FIFO_PARTITION(84e9247e8):CONFIG_DMA_DW_FIFO_PARTITION=yinapp/boards/intel_adsp_ace15_mtpm.conf(matchingintel_adsp_cavs25.conf) sodw_dma_setup()partitions the LP-GPDMA hardware FIFO (0x16807f) instead of leaving FIFO partition sizes at zero, preventing immediateSSP2-BTGATEWAY_UNDERRUN_DETECTEDerrors on ACE 1.5 (mtl/arl-s).Hardware Validation (Over-the-Air DSP-to-DSP
SSP2-BThw:0,20)Validated bi-directionally (
500 HzTX on Wildcat Lakeladybird↔1000 HzTX on Panther Lakedamsel-flyand Arrow Lakedragon-fly) paired withthesofproject/linux#6031:ladybirdRX FFT (1000 HzTX)damsel-flyRX FFT (500 HzTX)SBC (0x00)(48 kHz 2ch)999.97 Hz(RMS 14119.6)499.35 Hz(RMS 14135.0)AAC (0x02)(48 kHz 2ch)1000.08 Hz(RMS 13707.5)500.57 Hz(RMS 13727.3)mSBC (0x05)(16 kHz 1ch)999.90 Hz(RMS 14142.7)500.08 Hz(RMS 14123.5)CVSD (0x02)(8 kHz 1ch)1000.14 Hz(RMS 10833.2)499.37 Hz(RMS 13668.5)G.711 u-law (0x00)(8 kHz 1ch)1000.00 Hz(RMS 14006.2)499.86 Hz(RMS 14177.9)G.711 A-law (0x01)(8 kHz 1ch)1000.29 Hz(RMS 14098.8)500.57 Hz(RMS 14261.1)Transparent (0x03)Raw PCM (8 kHz 1ch)999.77 Hz(RMS 14227.0)499.86 Hz(RMS 14194.3)Controller LC3 (0x06)(16 kHz 1ch)1000.03 Hz(RMS 15343.7)499.89 Hz(RMS 15503.1)