Is Documentation/networking/phy.txt still up-to-date?

From: Sebastian Frias
Date: Wed Nov 09 2016 - 08:25:10 EST


Hi,

Documentation/networking/phy.txt discusses phy_connect and states that:

"...

interface is a u32 which specifies the connection type used
between the controller and the PHY. Examples are GMII, MII,
RGMII, and SGMII. For a full list, see include/linux/phy.h

Now just make sure that phydev->supported and phydev->advertising have any
values pruned from them which don't make sense for your controller (a 10/100
controller may be connected to a gigabit capable PHY, so you would need to
mask off SUPPORTED_1000baseT*). See include/linux/ethtool.h for definitions
for these bitfields. Note that you should not SET any bits, or the PHY may
get put into an unsupported state.

..."

However, 'drivers/net/ethernet/aurora/nb8800.c' for example, does SETs some
bits (in function 'nb8800_pause_adv').

I checked 'drivers/net/ethernet/broadcom/genet/bcmmii.c' and that one CLEARs
bits (as per the documentation).

Does anybody knows what is the correct/recommended approach?

Best regards,

Sebastian