net: phy: at803x: add downshift support

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The AR8031 and AR8035 support the link speed downshift. Add driver
support for it. One peculiarity of these PHYs is that it needs a
software reset after changing the setting, thus add the .soft_reset()
op and do a phy_init_hw() if necessary.

This was tested on a custom board with the AR8031.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Michael Walle 2020-04-28 23:15:02 +02:00 • committed by David S. Miller

parent 838974e1e0

commit cde0f4f81d

1 changed files with 87 additions and 0 deletions

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drivers/net/phy/at803x.c

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