[Bug 270504] arm64-aarch64-PINE64-LTS network interface not operational in Clusterboard

From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 28 Mar 2023 19:22:27 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=270504

            Bug ID: 270504
           Summary: arm64-aarch64-PINE64-LTS network interface not
                    operational in Clusterboard
           Product: Base System
           Version: CURRENT
          Hardware: arm64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: arm
          Assignee: freebsd-arm@FreeBSD.org
          Reporter: pawel.krawczyk@hush.com

The SOpine module boots perfectly from latest arm64-aarch64-PINE64-LTS image
when running in both Pine64 Baseboard and Clusterboard, but when running in the
latter the network interface doesn't work.

This is a well known problem with the FDT which requires a small DT overlay, as
documented here (this "tx-delay-ps = <500>" part is the fix):

https://nixos.wiki/wiki/NixOS_on_ARM/PINE_A64-LTS#Clusterboard_Ethernet

As I don't have much experience building FreeBSD image for arm64, I can't
provide a ready patch but with a little bit of guidance I'm sure I can add the
DTO and test it on actual hardware.

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