imx8mn: Using the easrc driver

[Fabio Estevam]

Hi Shengjiu,

I am running kernel 5.18-rc1 on an imx8mn-ddr4-evk board.

The following playback devices are available:

# aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: imxspdif [imx-spdif], device 0: S/PDIF PCM snd-soc-dummy-dai-0
[S/PDIF PCM snd-soc-dummy-dai-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: wm8524audio [wm8524-audio], device 0: HiFi wm8524-hifi-0 [HiFi
wm8524-hifi-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: wm8524audio [wm8524-audio], device 1: HiFi-ASRC-FE (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
#

I would like to use the sample rate conversion (provided by the easrc driver):

# aplay -D hw:1,1 /media/f2bjrop1.0.wav
Playing WAVE '/media/f2bjrop1.0.wav' : Signed 16 bit Little Endian,
Rate 16000 Hz, Mono
Warning: rate is not accurate (requested = 16000Hz, got = 32000Hz)
         please, try the plug plugin

, but the playback does not play at the correct speed. It plays at a
much faster rate.

The f2bjrop1.0.wav file I got from:
http://www.fit.vutbr.cz/~motlicek/speech_hnm.html

What should be done for the easrc to convert the sampling rates properly?

Thanks,

Fabio Estevam