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net: mdio-i2c: add support for Clause 45 accesses
authorRussell King <rmk+kernel@armlinux.org.uk>
Wed, 11 Dec 2019 10:56:20 +0000 (10:56 +0000)
committerDavid S. Miller <davem@davemloft.net>
Wed, 11 Dec 2019 19:53:41 +0000 (11:53 -0800)
commit29ac9e7a985b97f57dfab97468afc96c66af4beb
treee10d3f90d00e85f3d7fed118a6bb421be0bdf91dtree | snapshot
parent9f3dbd48b3fffc0ba431919035c9bd8e64d0b236commit | diff
net: mdio-i2c: add support for Clause 45 accesses

Some SFP+ modules have PHYs on them just like SFP modules do, except
they are Clause 45 PHYs.  The I2C protocol used to access them is
modified slightly in order to send the device address and 16-bit
register index.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/phy/mdio-i2c.c diff | blob | history
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