On 8/12/2019 4:23 AM, Alexandru Ardelean wrote: > Both ADIN1200 & ADIN1300 support Clause 45 access for some registers. > The Extended Management Interface (EMI) registers are accessible via both > Clause 45 (at register MDIO_MMD_VEND1) and using Clause 22. > > The Clause 22 access for MMD regs differs from the standard one defined by > 802.3. The ADIN PHYs use registers ExtRegPtr (0x0010) and ExtRegData > (0x0011) to access Clause 45 & EMI registers. > > The indirect access is done via the following mechanism (for both R/W): > 1. Write the address of the register in the ExtRegPtr > 2. Read/write the value of the register via reg ExtRegData > > This mechanism is needed to manage configuration of chip settings and to > access EEE registers via Clause 22. > > Since Clause 45 access will likely never be used, it is not implemented via > this hook. > > Signed-off-by: Alexandru Ardelean <alexandru.ardelean@xxxxxxxxxx> Reviewed-by: Florian Fainelli <f.fainelli@xxxxxxxxx> -- Florian
