1.read pcm from /dev/fpga-i2s play directly with noise.
2.write pcm to file , upload to pc ,play in openSuse,everything okay.
3.write pcm to file, play in rk3399 board using plughw:realtekrt5651co,DEV=0 with noise.
4.write pcm to file,play in rk3399 board using plughw:CARD=rockchiphdmi,DEV=0 everything okay.
1.read pcm from /dev/fpga-i2s play directly with noise. 2.write pcm to file , upload to pc ,play in openSuse,everything okay. 3.write pcm to file, play in rk3399 board using plughw:realtekrt5651co,DEV=0 with noise. 4.write pcm to file,play in rk3399 board using plughw:CARD=rockchiphdmi,DEV=0 everything okay.