Hi there,
My BeagleBone Green has had major problems with the Ethernet phy since I
got it many years ago. There is a patch for Linux here:
I asked in #beagle on FreeNode IRC about this some months ago, after
finally getting around to building my device. Here is an abridged log,
which will save me rewriting it:
<+rcn-ee[m]> rah: that's fixed in u-boot... it'll be going away..
<+rcn-ee[m]> rah: here is the u-boot fix: (which is better then the
kernel fix)
https://github.com/u-boot/u-boot/blob/master/board/ti/am335x/board.c#L629-L700
<+rcn-ee[m]> rah: thus the only reason i still carry the patch, is for
user still running old u-boot..
<+rcn-ee[m]> Here's the commit:
https://github.com/u-boot/u-boot/commit/20c37fb1bfb9f20804645b2199699cd815a4d55c
< rah> U-Boot 2019.04-00002-gbb4af0f50f (Jul 08 2019 - 11:44:39 -0500),
Build: jenkins-github_Bootloader-Builder-128
< rah> github seems to think that patch went into 2019.10
< rah> is there a beaglebone image with a later u-boot image that I can
flash?
<+rcn-ee[m]> rah: special build for you: sudo
/opt/scripts/tools/developers/update_bootloader.sh --beta
<+rcn-ee[m]> rah: , there should be a new print: printf("fixing up
phy_id for %s, old: %d, new: %d\n",
< rah> rcn-ee[m]: it looks like I was wrong about the release version
though, it looks like this patch went in from v2018.11-rc1 onwards
< rah> rcn-ee[m]: I'm not seeing this printf:
https://paste.debian.net/1111765/
<+rcn-ee[m]> rah: ugh CONFIG_OF_BOARD_SETUP, that's the fdt path, we are
still using the classic board path..
<+rcn-ee[m]> i'll need to do some testing, the last time i tried
switching over the fdt path, it was a shit show...
<+rcn-ee[m]> atleast now, we spec a larger hole at the start of the
partition.
< rah> ok, that's all going over my head but I get that you can't sort
it out now 
< rah> thanks anyway
I've been waiting patiently for months to hear more but nothing has
materialised. I've been waiting in #beagle to pounce on rcn-ee but he
has not appeared.
I just downloaded the latest Debian image, wrote it to the eMMC, booted
it, ran
$ sudo /opt/scripts/tools/developers/update_bootloader.sh --beta
and this is the resulting version:
U-Boot 2019.04-00002-g31a8ae0206 (May 13 2020 - 09:26:17 -0500), Build:
jenkins-github_Bootloader-Builder-139
Which apparently still does not contain the fix:
[ 23.440684] cpsw 4a100000.ethernet: phy
"/ocp/interconnect@4a000000/segment@0/target-module@100000/ethernet@0/mdio@1000/ethernet-phy@0"
not found on slave 0
Can anyone tell me whether the fix is going to appear in u-boot?
Thanks,
Bob Ham