doc: phy: document some PHY_INTERFACE_MODE_xxx settings
authorRussell King <rmk+kernel@armlinux.org.uk>
Fri, 21 Jun 2019 14:59:09 +0000 (15:59 +0100)
committerDavid S. Miller <davem@davemloft.net>
Sun, 23 Jun 2019 18:35:06 +0000 (11:35 -0700)
commit8c25c0cb5bb4e63170bb7760179ec294a3827694
tree4d9772c1762802af126084c55206b7c307fd70b6
parent08003d0b63a63bebaccca90e2f1d628dfd66cd4d
doc: phy: document some PHY_INTERFACE_MODE_xxx settings

There seems to be some confusion surrounding three PHY interface modes,
specifically 1000BASE-X, 2500BASE-X and SGMII.  Add some documentation
to phylib detailing precisely what these interface modes refer to.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Documentation/networking/phy.rst