phy_read_mmd_indirect (9)

int phy_read_mmd_indirect(struct mii_bus * bus, int prtad, int devad, int addr);

bus

the target MII bus

prtad

MMD Address

devad

MMD DEVAD

addr

PHY address on the MII bus

it reads data from the MMD registers (clause 22 to access to clause 45) of the specified phy address.

1) Write reg 13 // DEVAD 2) Write reg 14 // MMD Address 3) Write reg 13 // MMD Data Command for MMD DEVAD 3) Read reg 14 // Read MMD data