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OMAP3503 Audio Problem

Other Parts Discussed in Thread: OMAP3503

 

Hi all,

      I am using OMAP3503 EVM board with OMAPSDK-1.0.2 version BSP on it.

      The board is booted with Linux.

      I am facing some problem playing ".au" format files on the board.
        I am using "aplay" to play the files on the board. When I give the following command,

        [root@OMAP3EVM /home]# aplay -t au temp.au
        Playing Sparc Audio 'temp.au' : Mu-Law, Rate 8000 Hz, Mono
        ALSA lib pcm_plug.c:773:(snd_pcm_plug_hw_refine_schange) Unable to find an usable access for '(null)'
        aplay: set_params:901: Sample format non available
        [root@OMAP3EVM /home]#
        [root@OMAP3EVM /home]#
        [root@OMAP3EVM /home]#
        [root@OMAP3EVM /home]#
        [root@OMAP3EVM /home]# aplay -l
        **** List of PLAYBACK Hardware Devices ****
        card 0: TWL4030 [TWL4030], device 0: OMAP PCM [omap alsa pcm]
          Subdevices: 1/1
          Subdevice #0: subdevice #0

        The file format is "temp.au: Sun/NeXT audio data: 8-bit ISDN mu-law, mono, 8000 Hz" .

        As I understand, I guess the board is not able to play the Mu-Law format files. I am able to play ".wav" files successfully.

        Can u tell me what the problem is ?
        I want to use this board for VOIP, with VOIP phone running on it. All the phones try to play ".au" format on the board.

        The present TWL4030 driver codec does not support mmap functionality. Is there any latest version of this driver with "mmap" functionality support ?

       Thanks in Advance