netdev - Re: [PATCH net-next 7/9] net: stmmac: Integrate XGMAC into main driver flow

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Message-ID: <20180802143638.GD7462@lunn.ch>
Date:   Thu, 2 Aug 2018 16:36:38 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Jose Abreu <Jose.Abreu@...opsys.com>
Cc:     netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
        Joao Pinto <Joao.Pinto@...opsys.com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>
Subject: Re: [PATCH net-next 7/9] net: stmmac: Integrate XGMAC into main
 driver flow

> Sorry, I made a mistake. Where it reads SGMII in my reply I was
> referring to XGMII.

So you have XGMII between the MAC and the PHY. That should support
2.5G, 5G and 10G. What i don't know is if you can also do 10/100/1000
over XGMII?

How are you currently connecting your 1G PHY to the MAC? XGMII is a
big parallel bus, where as SGMII is a small serial bus.

I would say, before this patchset goes anywhere, you need to test
10/100/1000/2.5G/10G, with at least one PHY.

Alternatively, take out support for 2.5G/10G and C45, and post patches
for just > 1G and C22. That you can test and you know works. You can
add the rest later.

	Andrew