How to use CLKO2 to ouput 24MHZ clock?

[daniel_lee1]

Hi,

We would like CLKO2 to output 24MHz clock instead of 20MHz on imx8mq EVKB.

How can I do?

Best regards,

Daniel

[igorpadykov]

Hi Daniel

one can try to set CLKO2 "assigned-clock-rates" in dts file:

fsl-imx8mq-evk.dts\freescale\dts\boot\arm64\arch - linux-imx - i.MX Linux kernel 

However for producing accurate 24MHz clock it is necessary to set proper parent clock

which could be evenly divided. Clock parents can be found in clk driver:

clk-imx8mq.c\imx\clk\drivers - linux-imx - i.MX Linux kernel 

Also may be useful to check

https://community.nxp.com/thread/452513 

Best regards
igor
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