Hi, Have you tried enabling debug mode in phylink (add #define DEBUG at the top of the file) ?
Thanks. On Thu, Aug 08, 2019 at 08:17:29AM +0000, Jose Abreu wrote: > ++ PHY Experts > > From: Jose Abreu <joab...@synopsys.com> > Date: Aug/07/2019, 16:46:23 (UTC+00:00) > > > Hello, > > > > I've some sample code for Clause 73 support using Synopsys based XPCS > > but I would like to clarify some things that I noticed. > > > > I'm using USXGMII as interface and a single SERDES that operates at 10G > > rate but MAC side is working at 2.5G. Maximum available bandwidth is > > therefore 2.5Gbps. > > > > So, I configure USXGMII for 2.5G mode and it works but if I try to limit > > the autoneg abilities to 2.5G max then it never finishes: > > # ethtool enp4s0 > > Settings for enp4s0: > > Supported ports: [ ] > > Supported link modes: 1000baseKX/Full > > 2500baseX/Full > > Supported pause frame use: Symmetric Receive-only > > Supports auto-negotiation: Yes > > Supported FEC modes: Not reported > > Advertised link modes: 1000baseKX/Full > > 2500baseX/Full > > Advertised pause frame use: Symmetric Receive-only > > Advertised auto-negotiation: Yes > > Advertised FEC modes: Not reported > > Speed: Unknown! > > Duplex: Unknown! (255) > > Port: MII > > PHYAD: 0 > > Transceiver: internal > > Auto-negotiation: on > > Supports Wake-on: ug > > Wake-on: d > > Current message level: 0x0000003f (63) > > drv probe link timer ifdown ifup > > Link detected: no > > > > When I do not limit autoneg and I say that maximum limit is 10G then I > > get Link Up and autoneg finishes with this outcome: > > # ethtool enp4s0 > > Settings for enp4s0: > > Supported ports: [ ] > > Supported link modes: 1000baseKX/Full > > 2500baseX/Full > > 10000baseKX4/Full > > 10000baseKR/Full > > Supported pause frame use: Symmetric Receive-only > > Supports auto-negotiation: Yes > > Supported FEC modes: Not reported > > Advertised link modes: 1000baseKX/Full > > 2500baseX/Full > > 10000baseKX4/Full > > 10000baseKR/Full > > Advertised pause frame use: Symmetric Receive-only > > Advertised auto-negotiation: Yes > > Advertised FEC modes: Not reported > > Link partner advertised link modes: 1000baseKX/Full > > 2500baseX/Full > > 10000baseKX4/Full > > 10000baseKR/Full > > Link partner advertised pause frame use: Symmetric Receive-only > > Link partner advertised auto-negotiation: Yes > > Link partner advertised FEC modes: Not reported > > Speed: 2500Mb/s > > Duplex: Full > > Port: MII <- Never mind this, it's a SW issue > > PHYAD: 0 > > Transceiver: internal > > Auto-negotiation: on > > Supports Wake-on: ug > > Wake-on: d > > Current message level: 0x0000003f (63) > > drv probe link timer ifdown ifup > > Link detected: yes > > > > I was expecting that, as MAC side is limited to 2.5G, I should set in > > phylink the correct capabilities and then outcome of autoneg would only > > have up to 2.5G modes. Am I wrong ? > > > > --- > > Thanks, > > Jose Miguel Abreu > > > --- > Thanks, > Jose Miguel Abreu > -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up According to speedtest.net: 11.9Mbps down 500kbps up
