net: dsa: vsc73xx: speed up MDIO bus to max allowed value

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According to the datasheet, the VSC73xx family's maximum internal MDIO bus
speed is 20 MHz. It also allows disabling the preamble.

This commit sets the MDIO clock prescaler to the minimum value and
disables the preamble to speed up MDIO operations.

It doesn't affect the external bus because it's configured in a different
subblock.

Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20240731203455.580262-1-paweldembicki@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

...

This commit is contained in:

Pawel Dembicki 2024-07-31 22:34:55 +02:00 • committed by Jakub Kicinski

parent 7e51d21ee0

commit 8d5be2c4f4

1 changed files with 18 additions and 1 deletions

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19

drivers/net/dsa/vitesse-vsc73xx-core.c

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