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enclustra / Mercury_XU1_ST1_Reference_Design

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DT: Shared MDIO, gem{0, 3} (w/ Linux 6.1) #2

Closed peteut closed 8 months ago

peteut commented 8 months ago

When enabling gem3 on a me-xu1-15eg SOM, the second MDIO node (address 7) was not probed (Linux 6.1, Yocto Mickledore):

[    3.794919] macb ff0e0000.ethernet eth1: Defer probe as mdio producer axi is not probed

According the scheme cdns,macb.yaml the PHY settings shall be placed in the mdio property.

Changing the DT accordingly indeed resolved the issue:

[    6.150211] macb ff0b0000.ethernet end0: renamed from eth0
[    6.187505] macb ff0e0000.ethernet end1: renamed from eth1
[    6.741615] macb ff0b0000.ethernet end0: PHY [ff0b0000.ethernet-ffffffff:03] driver [Micrel KSZ9031 Gigabit PHY] (irq=POLL)
[    6.752798] macb ff0b0000.ethernet end0: configuring for phy/rgmii-id link mode
[    6.798861] pps pps0: new PPS source ptp0
[    6.821227] macb ff0b0000.ethernet: gem-ptp-timer ptp clock registered.
[    6.900183] macb ff0e0000.ethernet end1: PHY [ff0b0000.ethernet-ffffffff:07] driver [Micrel KSZ9031 Gigabit PHY] (irq=POLL)
[    6.911349] macb ff0e0000.ethernet end1: configuring for phy/rgmii-id link mode
andreas-buerkler-enclustra commented 8 months ago

Thank you for the information. For the currently supported Linux kernel (5.15) it seems to work as it is, but we might update that in the next update.

peteut commented 8 months ago

Thank you for the information. For the currently supported Linux kernel (5.15) it seems to work as it is, but we might update that in the next update.

Thanks, I was not aware of the DT scheme change! Will update the title accordingly.