i.MX53 QSB, Linux 3.7 and alsa

[nodan]

Hi,

i'm trying to play audio on an i.MX53 QSB running Linux 3.7. using "aplay". It looks like the audio device is there, but not correctly setup.

Any ideas anybody what's going on?

Thanks,

Kai

# aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: imx53qsbsgtl500 [imx53-qsb-sgtl5000], device 0: HiFi sgtl5000-0 []
Subdevices: 1/1

  Subdevice #0: subdevice #0 

aplay track01.wav

Playing WAVE 'track01.wav' : Signed 16 bit Little Endian, imx-pcm-audio imx-pcm-audio: i2

Rate 44100 Hz, Stereo
aplay: set_params:1123: Unable to install hw params:
ACCESS:  RW_INTERLEAVED
FORMAT:  S16_LE
SUBFORMAT:  STD
SAMPLE_BITS: 16
FRAME_BITS: 32
CHANNELS: 2
RATE: 44100
PERIOD_TIME: (92879 92880)
PERIOD_SIZE: 4096
PERIOD_BYTES: 16384
PERIODS: 4
BUFFER_TIME: (371519 371520)
BUFFER_SIZE: 16384
BUFFER_BYTES: 65536

TICK_TIME: 0

[fabio_estevam · Accepted solution]

Hi Kai,

Here are the instructions to get audio working with kernel mainline:

- Download the sdma tools from here:

git.pengutronix.de Git - imx/sdma-firmware.git/summary

Build it (just a simple 'make') and you will get a 'sdma-imx53.bin' binary.

- Copy this binary into your kernel source into: linux/firmware/imx/sdma/

- Edit your .config file so that the firmware can be built:

CONFIG_PREVENT_FIRMWARE_BUILD=y

CONFIG_FW_LOADER=y

CONFIG_FIRMWARE_IN_KERNEL=y

CONFIG_EXTRA_FIRMWARE="imx/sdma/sdma-imx53.bin"

CONFIG_EXTRA_FIRMWARE_DIR="firmware"

- Re-build the kernel

- Enjoy your favorite band song on your mx53qsb ;-)

Regards,

Fabio Estevam

[nodan]

Thanks, I'll try that.

EDIT: I tried it and it worked as described. Great.

Regards,

Kai