PCM2_DAI_PCM_LOOPBACK_MASK  968 sound/soc/mediatek/mt6797/mt6797-reg.h #define PCM2_DAI_PCM_LOOPBACK_MASK                           0x1
PCM2_DAI_PCM_LOOPBACK_MASK  983 sound/soc/mediatek/mt8183/mt8183-reg.h #define PCM2_DAI_PCM_LOOPBACK_MASK                    0x1