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6UL PHY device tree and driver change

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Currently changing the Ethernet PHY on a board with a connect core 6ul

The original design has the same Ethernet arrangement as the starter kit using a lan8720

Its desired to connected a TI DP83848 in its place.

I have modified the device tree to reference a different phy

ethphy0: ethernet-phy@0 {
compatible = "ethernet-phy-ieee802.3-c22";
dp83848;
reg = <0>;
};

also set CONFIG_DP83848_PHY=y in my defconfig.

compiled with latest dey (2.6-r2)

I have loaded the image onto the device and verified that the dp83848 has been compiled into the kernel drivers.

I get the error
`fec 2188000.ethernet eth0: Unable to connect to phy`
after boot.

Have i missed a step in the device tree for this to work? or are there any additional commands that can be run to debug connected devices?


Many Thanks

Phil
asked Nov 25, 2019 in Linux by phildyke New to the Community (0 points)

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