On Mon, Jun 17, 2019 at 09:33:12PM +0000, René van Dorst wrote: > Quoting Andrew Lunn <and...@lunn.ch>: > > >On Sun, Jun 16, 2019 at 08:20:08PM +0200, René van Dorst wrote: > >>Like many other mediatek SOCs, the MT7621 SOC and the internal MT7530 > >>switch both > >>supports TRGMII mode. MT7621 TRGMII speed is 1200MBit. > > > >Hi René > > > > Hi Andrew, > > >Is TRGMII used only between the SoC and the Switch? Or does external > >ports of the switch also support 1200Mbit/s? If external ports support > >this, what does ethtool show for Speed? > > Only the first GMAC of the SOC and port 6 of the switch supports this mode. > The switch can be internal in the SOC but also a separate chip. > > PHYLINK and ethertool reports the link as 1Gbit. > The link is fixed-link with speed = 1000. > > dmesg output with unposted PHYLINK patches: > [ 5.236763] mt7530 mdio-bus:1f: configuring for fixed/trgmii link mode > [ 5.249813] mt7530 mdio-bus:1f: phylink_mac_config: > mode=fixed/trgmii/1Gbps/Full adv=00,00000000,00000220 pause=12 link=1 an=1 > [ 6.389435] mtk_soc_eth 1e100000.ethernet eth0: phylink_mac_config: > mode=fixed/trgmii/1Gbps/Full adv=00,00000000,00000220 pause=12 link=1 an=1
With PHYLINK, you can probably set the fixed link to the true 1.2Gbps. > # ethtool eth0 > Settings for eth0: > Supported ports: [ MII ] > Supported link modes: 1000baseT/Full > Supported pause frame use: No > Supports auto-negotiation: No > Supported FEC modes: Not reported > Advertised link modes: 1000baseT/Full > Advertised pause frame use: No > Advertised auto-negotiation: No > Advertised FEC modes: Not reported > Speed: 1000Mb/s We could consider adding 1200BaseT/Full? Andrew
