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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)
commit892942e1d1f654d3a0520539b852d077fb3b5db9
treee10d3f90d00e85f3d7fed118a6bb421be0bdf91dtree | snapshot
parentd08b7d33326e7b0564a568a90e44b1fe9712b1d5commit | 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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