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CS42888 8000 sampling rate support

Question asked by Babu Alikapati on Apr 7, 2020
Latest reply on Apr 13, 2020 by Babu Alikapati

Dear NXP Team, 

 

we are developing IVI system based on IMX8QM and connected BT module "BCM4356". BT A2DP works fine but HFP is not working. As per logs from alsa layer, input sampling rate is 8000 and output is 48000.

 Line 6109: 04-07 03:45:52.760  1829  3601 I audio_hw_primary: create_resampler rsmpl_sco_rx, in rate 8000, out rate 48000

 

tinypcminfor output for CS42888:

 

mek_8q:/sdcard/Download # tinypcminfo -D 0
Info for card 0, device 0:
 
PCM out:
      Access:   0x000009
   Format[0]:   0x000044
   Format[1]:   00000000
 Format Name:   S16_LE, S24_LE
   Subformat:   0x000001
        Rate:   min=48000Hz     max=192000Hz
    Channels:   min=1           max=8
 Sample bits:   min=16          max=32
 Period size:   min=16          max=16384
Period count:   min=2           max=255
 
PCM in:
      Access:   0x000009
   Format[0]:   0x000044
   Format[1]:   00000000
 Format Name:   S16_LE, S24_LE
   Subformat:   0x000001
        Rate:   min=48000Hz     max=192000Hz
    Channels:   min=1           max=4
 Sample bits:   min=16          max=32
 Period size:   min=16          max=16384
Period count:   min=2           max=255

 

Can any one help us to enable 8000 sampling rate in CS42888 codec ..?

 

 

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