MAX_NUM_CH        850 drivers/gpu/drm/rockchip/cdn-dp-reg.c 	val = MAX_NUM_CH(audio->channels);
MAX_NUM_CH        921 drivers/gpu/drm/rockchip/cdn-dp-reg.c 	val = MAX_NUM_CH(2) | AUDIO_TYPE_LPCM | CFG_SUB_PCKT_NUM(4);