[alsa-devel] ASoC machine driver: how to configure supported frame rates?

[Sergej Sawazki]

Am 10.10.2014 um 20:29 schrieb Lars-Peter Clausen:
> On 10/10/2014 06:12 PM, Sergej Sawazki wrote:
>> Dear all,
>>
>> I'm writing an ALSA SoC machine driver. The codec on my board, as well
>> as the cpu do support the following rates: SNDRV_PCM_RATE_8000_192000
>>
>> However, the codec, as well as the cpu are clock slaves and the clocks
>> are fixed. Hence, my board does only support the 96kHz sample rate.
>>
>> Can someone give me some advice on how to tell ALSA that my board does
>> only support the rate SNDRV_PCM_RATE_96000?
>> I don't want to modify the codec and the platform driver.
>>
>> Any help would be highly appreciated.  Thanks!
>
> You can apply additional constraints in the startup callback of the
> snd_soc_ops of DAI link in your board driver.
>
> For example see sound/soc/samsung/h1940_uda1380.c
>
> - Lars
>
Lars, thanks for you help. It is working.

- Sergej