海思3520A音频AI,AO驱动加载失败

正在做海思3520A平台的DVR（比较老），发现加载其他驱动都正常就是加载ai，ao驱动时 提示以下错误，不知哪位大侠碰到过这种情况，实在无从下手。# insmod hi3520A_ai.ko
[ 1079.594807] hi3520A_ai: Unknown symbol dmac_start_llim2p (err 0)
[ 1079.601077] hi3520A_ai: Unknown symbol dmac_channelstart (err 0)
[ 1079.607439] hi3520A_ai: Unknown symbol dmac_buildllim2p (err 0)
[ 1079.613540] hi3520A_ai: Unknown symbol free_dmalli_space (err 0)
[ 1079.619705] hi3520A_ai: Unknown symbol allocate_dmalli_space (err 0)
[ 1079.626102] hi3520A_ai: Unknown symbol dmac_channelclose (err 0)
[ 1079.632198] hi3520A_ai: Unknown symbol dmac_register_isr (err 0)
[ 1079.638360] hi3520A_ai: Unknown symbol dmac_channel_free (err 0)
insmod: can't insert 'hi3520A_ai.ko': unknown symbol in module or invalid parameter