PCM_DAI_PCM_LOOPBACK_MASK  853 sound/soc/mediatek/mt6797/mt6797-reg.h #define PCM_DAI_PCM_LOOPBACK_MASK                           0x1
PCM_DAI_PCM_LOOPBACK_MASK  868 sound/soc/mediatek/mt8183/mt8183-reg.h #define PCM_DAI_PCM_LOOPBACK_MASK                     0x1