Error with "Unsigned 8 bit, Rate 8000 Hz, Mono" track

Error with "Unsigned 8 bit, Rate 8000 Hz, Mono" track

[Fabio Estevam]

Hi,

Running 3.6-rc1 on a mx28evk I get the following error with this wav format:

root@freescale /home$ aplay k3b_error1.wav
Playing WAVE 'k3b_error1.wav' : Unsigned 8 bit, Rate 8000 Hz, Mono
[  303.640000] asoc: machine hw_params failed: -22
aplay: set_params:959: Unable to install hw params:
ACCESS:  RW_INTERLEAVED
FORMAT:  U8
SUBFORMAT:  STD
SAMPLE_BITS: 8
FRAME_BITS: 8
CHANNELS: 1
RATE: 8000
PERIOD_TIME: 125000
PERIOD_SIZE: 1000
PERIOD_BYTES: 1000
PERIODS: 4
BUFFER_TIME: 500000
BUFFER_SIZE: 4000
BUFFER_BYTES: 4000
TICK_TIME: 0

Haven't started debugging yet, but if anyone sees something obvious,
please let me know.

This same file plays correctly on mx31/mx27/mx51/mx6q boards.

Regards,

Fabio Estevam

Re: Error with "Unsigned 8 bit, Rate 8000 Hz, Mono" track

[Dong Aisheng]

On Fri, Aug 10, 2012 at 12:25:13PM +0800, Fabio Estevam wrote:
> Hi,
> 
> Running 3.6-rc1 on a mx28evk I get the following error with this wav format:
> 
> root@freescale /home$ aplay k3b_error1.wav
> Playing WAVE 'k3b_error1.wav' : Unsigned 8 bit, Rate 8000 Hz, Mono
> [  303.640000] asoc: machine hw_params failed: -22
It failed at here:
/* Sgtl5000 sysclk should be >= 8MHz and <= 27M */
if (mclk < 8000000 || mclk > 27000000)
	return -EINVAL;

Since sgtl5000 on slave mode, the mclk can only be 256*fs, 384*fs, 512*fs,
the maximum mclk of 8Khz 4096000(512 * 8000) < 8Mhz, it does not meet
the minimum clock requirement of mclk.
It looks like hw limitation on slave mode.

Will spend some time double check if any solution for this later.
If anyone else know it, please share the comments.

Regards
Dong Aisheng

> aplay: set_params:959: Unable to install hw params:
> ACCESS:  RW_INTERLEAVED
> FORMAT:  U8
> SUBFORMAT:  STD
> SAMPLE_BITS: 8
> FRAME_BITS: 8
> CHANNELS: 1
> RATE: 8000
> PERIOD_TIME: 125000
> PERIOD_SIZE: 1000
> PERIOD_BYTES: 1000
> PERIODS: 4
> BUFFER_TIME: 500000
> BUFFER_SIZE: 4000
> BUFFER_BYTES: 4000
> TICK_TIME: 0
> 
> Haven't started debugging yet, but if anyone sees something obvious,
> please let me know.
> 
> This same file plays correctly on mx31/mx27/mx51/mx6q boards.
> 
> Regards,
> 
> Fabio Estevam
> 

Re: Error with "Unsigned 8 bit, Rate 8000 Hz, Mono" track

[Mark Brown]

On Fri, Aug 10, 2012 at 07:00:05PM +0800, Dong Aisheng wrote:

> Since sgtl5000 on slave mode, the mclk can only be 256*fs, 384*fs, 512*fs,
> the maximum mclk of 8Khz 4096000(512 * 8000) < 8Mhz, it does not meet
> the minimum clock requirement of mclk.
> It looks like hw limitation on slave mode.

> Will spend some time double check if any solution for this later.
> If anyone else know it, please share the comments.

The CODEC driver ought to be setting a constraint for this if there's no
way it can support 8kHz in slave mode.

Re: Error with "Unsigned 8 bit, Rate 8000 Hz, Mono" track

[Dong Aisheng]

On Fri, Aug 10, 2012 at 07:31:09PM +0800, Mark Brown wrote:
> On Fri, Aug 10, 2012 at 07:00:05PM +0800, Dong Aisheng wrote:
> 
> > Since sgtl5000 on slave mode, the mclk can only be 256*fs, 384*fs, 512*fs,
> > the maximum mclk of 8Khz 4096000(512 * 8000) < 8Mhz, it does not meet
> > the minimum clock requirement of mclk.
> > It looks like hw limitation on slave mode.
> 
> > Will spend some time double check if any solution for this later.
> > If anyone else know it, please share the comments.
> 
> The CODEC driver ought to be setting a constraint for this if there's no
> way it can support 8kHz in slave mode.
> 
Yes, it's true.
I will check it when have time.

Regards
Dong Aisheng

Re: Error with "Unsigned 8 bit, Rate 8000 Hz, Mono" track

[Fabio Estevam]

On 8/10/12, Dong Aisheng <b29396@freescale.com> wrote:
> On Fri, Aug 10, 2012 at 12:25:13PM +0800, Fabio Estevam wrote:
>> Hi,
>>
>> Running 3.6-rc1 on a mx28evk I get the following error with this wav
>> format:
>>
>> root@freescale /home$ aplay k3b_error1.wav
>> Playing WAVE 'k3b_error1.wav' : Unsigned 8 bit, Rate 8000 Hz, Mono
>> [  303.640000] asoc: machine hw_params failed: -22
> It failed at here:
> /* Sgtl5000 sysclk should be >= 8MHz and <= 27M */
> if (mclk < 8000000 || mclk > 27000000)
> 	return -EINVAL;
>
> Since sgtl5000 on slave mode, the mclk can only be 256*fs, 384*fs, 512*fs,
> the maximum mclk of 8Khz 4096000(512 * 8000) < 8Mhz, it does not meet
> the minimum clock requirement of mclk.
> It looks like hw limitation on slave mode.

I can play this file on a mx51evk and mx6qsabrelite boards, which also
uses a sgtl5000.

So it looks like a mxs issue, right?

Thanks,

Fabio Estevam

Re: Error with "Unsigned 8 bit, Rate 8000 Hz, Mono" track

[Fabio Estevam]

On 8/10/12, Fabio Estevam <festevam@gmail.com> wrote:

> I can play this file on a mx51evk and mx6qsabrelite boards, which also
> uses a sgtl5000.

Ok, these boards have sgtl5000 in master mode.

Only on mx28evk we have sgtl5000 in slave mode.