topic Re: Question on ASoC driver load order in i.MX Processors

Question on ASoC driver load order

t_kuha — Fri, 29 Mar 2019 07:29:07 GMT

Hello,

I have written Linux ASoC driver code (codec driver & machine driver) for a certain audio codec IC.

The problem is sometimes the machine driver seems loaded before the codec driver, resulting in unsuccessful detection of the deice (e.g. "failed to find codec platform device" error).

Now my questions are:

1. My understanding is: ASoC codec driver (snd-soc-***.ko) must be loaded before machine driver (snd-soc-imx-***.ko).

Is this correct?

2. How can I ensure the load order of the modules?

Is there any sort of Kernel configuration or code for that?

Best regards,

Re: Question on ASoC driver load order

igorpadykov — Fri, 29 Mar 2019 23:25:51 GMT

Hi t_kuha

one can try nxp linux releases from source.codeaurora.org/external/imx repository

linux-imx - i.MX Linux kernel

Audio infrastructure is described in sect.7.1 Advanced Linux Sound Architecture (ALSA)

System on a Chip (ASoC) Sound attached Linux Manual.

Best regards
igor
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