[Macchiato] Getting eth0/1 functional

[Jonathan McDowell]

Hi.

I've been playing around with trying to get eth0/1 functional on my
'bin. I'm mainly interested in getting a 10G SFP+ working, but Steve
said he was having issues with copper too. So I had a play and I've
managed to get copper at least working with a mainline 4.15 kernel by
configuring the PHY correctly as follows:

-----
diff --git a/arch/arm64/boot/dts/marvell/armada-8040-mcbin.dts b/arch/arm64/boot/dts/marvell/armada-8040-mcbin.dts
index b3350827ee55..c9cee42738e1 100644
--- a/arch/arm64/boot/dts/marvell/armada-8040-mcbin.dts
+++ b/arch/arm64/boot/dts/marvell/armada-8040-mcbin.dts
@@ -208,12 +208,12 @@
        status = "okay";
 
        phy0: ethernet-phy at 0 {
-               compatible = "ethernet-phy-ieee802.3-c45";
+               compatible = "ethernet-phy-id002b.09aa", "ethernet-phy-ieee802.3-c45";
                reg = <0>;
        };
 
        phy8: ethernet-phy at 8 {
-               compatible = "ethernet-phy-ieee802.3-c45";
+               compatible = "ethernet-phy-id002b.09aa", "ethernet-phy-ieee802.3-c45";
                reg = <8>;
        };
 };
-----

You need CONFIG_MARVELL_10G_PHY set as well to bring in the PHY driver.

I'm not sure this is the /best/ way to get things working, but it does
so for me. I've also found
http://www.jlbec.org/pub/linux/arm/kernel/git-cur/arm:mcbin.diff which
seems to have a number of changes, including enabling the SFP+ support,
but I'm not sure what the status of getting of all that upstreamed is?

J.

-- 
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