net: dsa: bcm_sf2: communicate integrated PHY revision to PHY driver
The integrated BCM7xxx PHY contains no useful revision information in its MII_PHYSID2 bits 3:0, that information is instead contained in the SWITCH_REG_PHY_REVISION register. Read this register, store its value, and return it by implementing the dsa_switch::get_phy_flags() callback accordingly. The register layout is already matching what the BCM7xxx PHY driver is expecting to find. Signed-off-by:Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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