zynq_z_turn_defconfig: broken networking

Wed Apr 8 12:43:32 CEST 2020

ср, 8 апр. 2020 г. в 11:13, Michal Simek <monstr at monstr.eu>:
>
> On 08. 04. 20 9:12, Matwey V. Kornilov wrote:
> > ср, 8 апр. 2020 г. в 09:56, Michal Simek <monstr at monstr.eu>:
> >>
> >> On 07. 04. 20 22:12, Joe Hershberger wrote:
> >>> On Tue, Apr 7, 2020 at 1:34 PM Matwey V. Kornilov
> >>> <matwey.kornilov at gmail.com> wrote:
> >>>>
> >>>> вт, 7 апр. 2020 г. в 12:18, Michal Simek <monstr at monstr.eu>:
> >>>>>
> >>>>> On 07. 04. 20 11:16, Matwey V. Kornilov wrote:
> >>>>>> вт, 7 апр. 2020 г. в 12:01, Michal Simek <monstr at monstr.eu>:
> >>>>>>>
> >>>>>>> On 07. 04. 20 9:58, Matwey V. Kornilov wrote:
> >>>>>>>> пн, 6 апр. 2020 г. в 12:41, Michal Simek <monstr at monstr.eu>:
> >>>>>>>>>
> >>>>>>>>> Hi,
> >>>>>>>>>
> >>>>>>>>> On 06. 04. 20 10:14, Matwey V. Kornilov wrote:
> >>>>>>>>>> 06.04.2020 11:12, Matwey V. Kornilov пишет:
> >>>>>>>>>>> Hello,
> >>>>>>>>>>>
> >>>>>>>>>>> I am running u-boot 2020.04-rc4-00100-g74bf17db39 with
> >>>>>>>>>>> zynq_z_turn_defconfig configuration on MYIR Z-Turn board.
> >>>>>>>>>>> And I see the following when I am trying to run `dhcp' command.
> >>>>>>>>>>>
> >>>>>>>>>>>
> >>>>>>>>>>> ZYNQ GEM: e000b000, phyaddr 0, interface rgmii-id
> >>>>>>>>>>> mdio_register: non unique device name 'eth0'
> >>>>>>>>>>> ZYNQ GEM: e000b000, phyaddr 0, interface rgmii-id
> >>>>>>>>>>> mdio_register: non unique device name 'eth0'
> >>>>>>>>>>> ZYNQ GEM: e000b000, phyaddr 0, interface rgmii-id
> >>>>>>>>>>> mdio_register: non unique device name 'eth0'
> >>>>>>>>>>> ZYNQ GEM: e000b000, phyaddr 0, interface rgmii-id
> >>>>>>>>>>> mdio_register: non unique device name 'eth0'
> >>>>>>>>>>> No ethernet found.
> >>>>>>>>>>> ZYNQ GEM: e000b000, phyaddr 0, interface rgmii-id
> >>>>>>>>>>> mdio_register: non unique device name 'eth0'
> >>>>>>>>>>>
> >>>>>>>>>>
> >>>>>>>>>> Full boot log is the following:
> >>>>>>>>>>
> >>>>>>>>>>
> >>>>>>>>>> U-Boot SPL 2020.04-rc4-00100-g74bf17db39 (Apr 06 2020 - 11:00:45 +0300)
> >>>>>>>>>> mmc boot
> >>>>>>>>>> Trying to boot from MMC1
> >>>>>>>>>> spl_load_image_fat_os: error reading image system.dtb, err - -2
> >>>>>>>>>>
> >>>>>>>>>>
> >>>>>>>>>> U-Boot 2020.04-rc4-00100-g74bf17db39 (Apr 06 2020 - 11:00:45 +0300)
> >>>>>>>>>>
> >>>>>>>>>> CPU:   Zynq 7z010
> >>>>>>>>>> Silicon: v3.1
> >>>>>>>>>> Model: Zynq Z-Turn MYIR Board
> >>>>>>>>>> DRAM:  ECC disabled 1 GiB
> >>>>>>>>>> MMC:   mmc at e0100000: 0
> >>>>>>>>>> In:    serial at e0001000
> >>>>>>>>>> Out:   serial at e0001000
> >>>>>>>>>> Err:   serial at e0001000
> >>>>>>>>>> Net:   ZYNQ GEM: e000b000, phyaddr 0, interface rgmii-id
> >>>>>>>>>> Could not get PHY for eth0: addr 0
> >>>>>>>>>> No ethernet found.
> >>>>>>>>>>
> >>>>>>>>>> Hit any key to stop autoboot:  0
> >>>>>>>>>>
> >>>>>>>>>
> >>>>>>>>> u-boot is not able to find out your phy. Address is setup 0 which means
> >>>>>>>>> u-boot should do it autodetection. I don't have this board here to tell
> >>>>>>>>> you what can be wrong.
> >>>>>>>>>
> >>>>>>>>> Alex, Anton: Can you please comment it?
> >>>>>>>>>
> >>>>>>>>
> >>>>>>>> Is there a chance that something is wrong with ps7_init_gpl.c ?
> >>>>>>>> The Ethernet PHY doesn't work in Linux too with the similar error message.
> >>>>>>>
> >>>>>>> Did you validate any golden images that phy is fine?
> >>>>>>
> >>>>>> Yes, I did. There was microsd card supplied with the board (it has
> >>>>>> U-Boot 2013.10-svn7 and 3.15.0-xilinx kernel). The Ethernet is working
> >>>>>> with this image.
> >>>>>>
> >>>>>>>
> >>>>>>> Anyway as I said I don't have this board here that's why guys who has it
> >>>>>>> should debug it or patches welcome.
> >>>>>>> Or 3rd option is if none wants to keep it alive I will remove support
> >>>>>>> for it.
> >>>>>>
> >>>>>> Well, unfortunately, I have little knowledge how to debug this, but if
> >>>>>> you have an ideas what could I check, please ask.
> >>>>>
> >>>>> This board is in mainline for a while. That's why you can go back to
> >>>>> commit which introduced this board and try it. Then you can bisect it
> >>>>> and see which commit breaks it.
> >>>>
> >>>> Thanks. I've found where Ethernet was broken:
> >>>>
> >>>> 1f60789602e0d5f5f9a8b507f25737c65b5d8daa is the first bad commit
> >>>> commit 1f60789602e0d5f5f9a8b507f25737c65b5d8daa
> >>>> Author: Priyanka Jain <priyanka.jain at nxp.com>
> >>>> Date:   Tue Nov 5 04:05:11 2019 +0000
> >>>>
> >>>>     net/phy: Fix phy_connect() for phy addr 0
> >>>>
> >>>>     Fix 'mask' calculation in phy_connect() for phy addr '0'.
> >>>>     'mask' is getting set to '0xffffffff' for phy addr '0'
> >>>>     in phy_connect() whereas expected value is '0'.
> >>>>
> >>>>     Signed-off-by: Priyanka Jain <priyanka.jain at nxp.com>
> >>>>     Reported-by: tetsu-aoki via github
> >>>>     Acked-by: Joe Hershberger <joe.hershberger at ni.com>
> >>>>
> >>>
> >>> So presumably that means the phy addr should be set to -1 instead of 0
> >>> for autodetect, right? I believe this was seen on at least one other
> >>> board [1].
> >>>
> >>> [1] - https://www.mail-archive.com/u-boot@lists.denx.de/msg351386.html
> >>
> >> Good. I think that would be the best to setup direct phy address used on
> >> that board instead of trying to do autodetection but up2you.
> >
> > As far as I understand, the register comes from dtb which basically
> > comes from Linux kernel sources.
> > In the board schematics
> > http://www.myirtech.com/download/Zynq7000/Z-TURNBOARD_schematic.pdf
> > I see "PHY address: 000" (page 9), but I cannot understand what did they mean.
>
> when you run mdio list you should see detected phy address.

Zynq> mdio list
eth0:
3 - Generic PHY <--> ethernet at e000b000

>
> M
>
>
> --
> Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
> w: www.monstr.eu p: +42-0-721842854
> Maintainer of Linux kernel - Xilinx Microblaze
> Maintainer of Linux kernel - Xilinx Zynq ARM and ZynqMP ARM64 SoCs
> U-Boot custodian - Xilinx Microblaze/Zynq/ZynqMP/Versal SoCs
>


-- 
With best regards,
Matwey V. Kornilov