ACP_TO_SYSRAM_CH_NUM
config_acp_dma_channel(acp_mmio, ACP_TO_SYSRAM_CH_NUM, dscr_idx,
acp_dma_start(acp_mmio, ACP_TO_SYSRAM_CH_NUM, false);
rtd->ch2 = ACP_TO_SYSRAM_CH_NUM;