[alsa-devel] [PATCH] ASoC: adau1701: Add 44.1 KHz to supported sample rates

Pascal Huerst pascal.huerst at gmail.com
Wed Nov 11 13:42:02 CET 2015



On 11.11.2015 12:49, Lars-Peter Clausen wrote:
> On 11/11/2015 12:40 PM, Pascal Huerst wrote:
>> On 20.10.2015 11:10, Lars-Peter Clausen wrote:
>>> On 10/15/2015 01:16 PM, pascal.huerst at gmail.com wrote:
>>>> From: Pascal Huerst <pascal.huerst at gmail.com>
>>>>
>>>> According to the datasheet, this device does also support 44.1 KHz
>>>> as sample rate. This adds the necessary changes to support this.
>>>>
>>>> See Datasheet: Rev. B / page 39 / SR[1:0]
>>>>
>>>> Signed-off-by: Pascal Huerst <pascal.huerst at gmail.com>
>>>
>>> Hm, right. The sample rates that part can run at depend on the external
>>> clock rate. It can run at ext_clk / 256, ext_clk / 128 or ext_clk / 64.
>>> Maybe we should just implement it like that.
>>>
>>> Do you have support for switching the external clock at runtime on your
>>> platform?
>>
>> Yes, I can switch th eclock at runtime.
> 
> How do you do it? From the board driver?

Yes, in the board driver, within the .hw_params callback.

> - Lars
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