net: dsa: mv88e6xxx: read cycle counter period from hardware

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Instead of relying on a fixed mapping of hardware family to cycle
counter frequency, pull this information from the
MV88E6XXX_TAI_CLOCK_PERIOD register.

This lets us support switches whose cycle counter frequencies depend on
board design.

Fixes: de776d0d31 ("net: dsa: mv88e6xxx: add support for mv88e6393x family")
Suggested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Shenghao Yang <me@shenghaoyang.info>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

...

This commit is contained in:

Shenghao Yang 2024-10-20 14:38:29 +08:00 • committed by Paolo Abeni

parent 67af86afff

commit 7e3c18097a

2 changed files with 43 additions and 19 deletions

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2

drivers/net/dsa/mv88e6xxx/chip.h

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60

drivers/net/dsa/mv88e6xxx/ptp.c

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