SPM_1_1_AVS_CTL_AVS_ENABLED
avs_enabled = avs_ctl & SPM_1_1_AVS_CTL_AVS_ENABLED;
avs_ctl &= ~SPM_1_1_AVS_CTL_AVS_ENABLED;
avs_ctl |= SPM_1_1_AVS_CTL_AVS_ENABLED;