PCM2_SERIAL_LOOPBACK_SFT 964 sound/soc/mediatek/mt6797/mt6797-reg.h #define PCM2_SERIAL_LOOPBACK_SFT 20 PCM2_SERIAL_LOOPBACK_SFT 979 sound/soc/mediatek/mt8183/mt8183-reg.h #define PCM2_SERIAL_LOOPBACK_SFT 20