4 Apr
2020
4 Apr
'20
3:34 p.m.
Hi!
On Sat, Apr 4, 2020 at 11:08 PM Andrew Lunn andrew@lunn.ch wrote:
MT7530 tries to detect if 2nd GMAC is using a phy with phy-address 0 or 4.
What if the 2nd GMAC connects to an external PHY on address 0 on a different mdio-bus?
In general, you using a phy-handle to cover such a situation. If there is a phy-handle, just use it.
If it's determining where switch mac5 is wired, a phy-handle is fine. Here we are determining where exposed rgmii2 pins are wired. It can be wired to switch mac5 or skip the switch mac completely and connected to phy0/phy4. Current driver is determining rgmii2 wiring on mt7530 using phy-handle on *another unrelated ethernet node* which doesn't sound right.
--
Regards,
Chuanhong Guo