arch/arm64/imx9: Add enet MII clock calculation#18409
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lupyuen merged 1 commit intoapache:masterfrom Feb 20, 2026
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Add MII clock calculation from root clock Remove MII clock divider define Signed-off-by: Ari Kimari <ari.kimari@tii.ae>
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jerpelea
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Feb 19, 2026
cederom
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Thank you @arikimari :-) Scope images and working network tests would be nice to have in the testing section please add :-)
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lupyuen
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Summary
Add MII clock calculation from root clock
Remove MII clock divider define
Old MII clock divider define (=26) was wrong, clock <5MHz
New MII divider calculation (=49) generates correct 2,5MHz clock
Impact
IMX9 hw with ethernet
Testing
Tested with custom NXP93 HW.
Scope measurement gives 2,5MHz clock for MII
Scope measurement with old divider was about 5MHz