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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>
…ologies Include SSP and Bluetooth offload definitions in sof-hda-generic.conf and enable SSP2-BT (BT_PCM_ID=20, BT_ID=8, BT_PCM_NAME=Bluetooth, ADD_BT=true) with ACE 3.0 NHLT pre-processing in sof-hda-generic and sof-hda-generic-ace3-* topologies. Signed-off-by: Liam Girdwood <liam.r.girdwood@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 (which causes immediate SSP2-BT GATEWAY_UNDERRUN_DETECTED errors). Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
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Nov 10, 2026
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pls check commit messages have correct line wrapping.
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Summary
This series enables full-duplex Bluetooth SSP (
SSP2-BT) hardware audio offload 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 stereo hw_config.3(9a9c33be0):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: enable SSP2-BT offload in sof-hda-generic topologies(a24503603):<ssp.conf>,<intel/hw_config_cardinal_clk.conf>,<bt-default.conf>, andplatform/intel/bt-generic.confinsof-hda-generic.confand enablesSSP2-BT(BT_PCM_ID=20, BT_ID=8, BT_PCM_NAME=Bluetooth, ADD_BT=true) insof-hda-genericandsof-hda-generic-ace3-*topologies.app/boards: ace15_mtpm: enable CONFIG_DMA_DW_FIFO_PARTITION for LP-GPDMA(562969f5d):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 immediateSSP2GATEWAY_UNDERRUN_DETECTEDerrors on ACE 1.5 (mtl/arl-s).Hardware Validation
dragon-fly, ACE 1.5): Verified live over-the-air A2DP (SBC & AAC at 48 kHz stereo) and HFP/eSCO (mSBC 16 kHz & CVSD 8 kHz full-duplex) hardware offload onSSP2-BT(hw:0,20).ladybird, ACE 3.0) & Panther Lake (damsel-fly, ACE 3.0): Verified full-duplexSSP2-BT(hw:0,20) playback and capture.