PCM_BUFFER_LOOPBACK_SFT  843 sound/soc/mediatek/mt6797/mt6797-reg.h #define PCM_BUFFER_LOOPBACK_SFT                             30
PCM_BUFFER_LOOPBACK_SFT  858 sound/soc/mediatek/mt8183/mt8183-reg.h #define PCM_BUFFER_LOOPBACK_SFT                       30