PCM_SERIAL_LOOPBACK_SFT  849 sound/soc/mediatek/mt6797/mt6797-reg.h #define PCM_SERIAL_LOOPBACK_SFT                             28
PCM_SERIAL_LOOPBACK_SFT  864 sound/soc/mediatek/mt8183/mt8183-reg.h #define PCM_SERIAL_LOOPBACK_SFT                       28