docs(linux): AM64x: Update CPSW documentation #337
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chintan013
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| The DP83869 PHY associated with one of the CPSW interface("eth1" by default) is not included |
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@chintan013, please mention that this requirement is specific to the AM642-EVM or any board in general which uses the DP83968 PHY.
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| The DP83869 PHY associated with one of the CPSW interface("eth1" by default) for AM642-EVM or | ||
| any board in general, does not have it's driver as a built-in module in the kernel, and not | ||
| getting probed during boot up. Therefore, the "eth1" interface must be brought up using the | ||
| commands provided above. |
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This can be shortened as follows:
| The DP83869 PHY associated with one of the CPSW interface("eth1" by default) for AM642-EVM or | |
| any board in general, does not have it's driver as a built-in module in the kernel, and not | |
| getting probed during boot up. Therefore, the "eth1" interface must be brought up using the | |
| commands provided above. | |
| The DP83869 PHY (associated with the eth1 CPSW interface for AM642-EVM) is | |
| not built into the kernel image. It is not available during early boot as | |
| a result, and must be brought up using the commands provided above. |
But I'm more concerned about what you mean here. If it's not built-in it should still be probed once the rootfs is defined and we can perform the usual dt parse and modprobe. This shouldn't change the behavior of the device in a way that requires the manual setup defined above.
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@chintan013 Can you please comment here?
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Hello @StaticRocket, During boot time, PHY driver was probed after the script for bringing interface up executed. If we want to bring the interface UP during boot time we need to make changes to the udev script.
Thanks for reviewing the PR, I will apply your suggestions.
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Why are you doing this through udev anyway? We have systemd-networkd present. It should be more than capable of configuring your interfaces as outlined in the scripts shown here...
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Hello @StaticRocket, I have updated the documentation by enabling a systemctl service. For now it is in the documentation, but in the future release we will include it in the filesystem.
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Alright, that's objectively worse. Systemd-networkd should be more than capable of doing this. Why do you want to add more custom scripts and services to work around things already solved by a proper network manager that we already ship?
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CPSW interface associated with DP83869 PHY in AM642-EVM needs to be brought up by adding a systemctl script. Update the documentation to mention the same. Signed-off-by: Chintan Vankar <[email protected]>
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CPSW interface associated with DP83869 PHY in AM64x needs to be brought up by adding a systemctl service. Update the documentation to mention the same.