From: "René van Dorst" <opensource@vdorst.com>
To: Andrew Lunn <andrew@lunn.ch>
Cc: Sean Wang <sean.wang@mediatek.com>,
Florian Fainelli <f.fainelli@gmail.com>,
"David S . Miller" <davem@davemloft.net>,
Matthias Brugger <matthias.bgg@gmail.com>,
Vivien Didelot <vivien.didelot@gmail.com>,
netdev@vger.kernel.org, john@phrozen.org,
linux-mediatek@lists.infradead.org, linux-mips@vger.kernel.org
Subject: Re: [PATCH net-next 0/2] net: mediatek: Add MT7621 TRGMII mode support
Date: Mon, 17 Jun 2019 21:33:12 +0000 [thread overview]
Message-ID: <20190617213312.Horde.fcb9-g80Zzfd-IMC8EQy50h@www.vdorst.com> (raw)
In-Reply-To: <20190617140223.GC25211@lunn.ch>
Quoting Andrew Lunn <andrew@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
# 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
Duplex: Full
Port: MII
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Current message level: 0x000000ff (255)
drv probe link timer ifdown ifup rx_err tx_err
Link detected: yes
I already have report from a MT7623 user that this patch gives issues.
I send v2 of the patch if I fixed that issue.
Also I think it is better to add a XTAL frequency check.
The PLL values are only valid with a 40MHz crystal.
Any other comments for v2?
Greats,
René
>
> Thanks
> Andrew
next prev parent reply other threads:[~2019-06-17 21:33 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-16 18:20 [PATCH net-next 0/2] net: mediatek: Add MT7621 TRGMII mode support René van Dorst
2019-06-16 18:20 ` [PATCH net-next 1/2] net: ethernet: " René van Dorst
2019-06-16 18:20 ` [PATCH net-next 2/2] net: dsa: mt7530: " René van Dorst
2019-06-17 14:02 ` [PATCH net-next 0/2] net: mediatek: " Andrew Lunn
2019-06-17 21:33 ` René van Dorst [this message]
2019-06-17 21:44 ` Andrew Lunn
2019-06-17 23:20 ` René van Dorst
2019-06-18 1:53 ` Andrew Lunn
2019-06-18 2:21 ` Florian Fainelli
2019-06-18 11:46 ` René van Dorst
2019-06-17 22:19 ` Florian Fainelli
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