SAI1 MCLK Active State Query in i.MX8MM

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SAI1 MCLK Active State Query in i.MX8MM

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sreedhar_appala
Contributor III

Hi,

I am working with i.MX8MM EVK and 4.14 imx-sumo yocto distribution.

SAI1 is designed as Master, Audio System Clock (MCLK) is generated by SAI1 and send to codec we interfaced.

what we observe is during aplay or arecord functionality MCLK is active and alive.

Is it possible to keep SAI1 MCLK alive(running) always once enabled?

Please let me know your suggestions.

Thank you, Sreedhar

 

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi Sreedhar

 

one can try to comment "clk_disable_unprepare(sai->mclk_clk...)" in fsl_sai.c

https://source.codeaurora.org/external/imx/linux-imx/tree/sound/soc/fsl/fsl_sai.c?h=imx_4.14.98_2.3....

 

Best regards
igor

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