[bug report] sunxi: H6: no ethernet on Orange Pi One Plus

[Anne Macedo]

On Wed, Jul 05, 2023 at 01:31:28PM -0300, Anne Macedo wrote:
> On Wed, Jul 05, 2023 at 03:24:23PM +0000, Anne Macedo wrote:
> > On Wed, Jul 05, 2023 at 10:46:25AM -0300, Fabio Estevam wrote:
> > > Hi Anne,
> > > 
> > > On Tue, Jul 4, 2023 at 8:52 PM Anne Macedo <retpolanne at posteo.net> wrote:
> > > >
> > > > Hey!
> > > >
> > > > I'm trying to bake Linux images for the Orange Pi One Plus using Yocto.
> > > > Everything works fine, except for Ethernet.
> > > >
> > > > On the u-boot prompt:
> > > >
> > > > => dhcp
> > > > No ethernet found.
> > > >
> > > > After adding:
> > > >
> > > > CONFIG_SPL_SPI_SUNXI=y
> > > > CONFIG_SUN8I_EMAC=y
> > > >
> > > > to configs/orangepi_one_plus_defconfig, I started seeing this error:
> > > >
> > > > => dhcp
> > > > sun8i_emac_eth_start: Timeout
> > > >
> > > > I saw this other bug report but I couldn't really understand what has
> > > > been made to fix this issue [1].
> > > >
> > > > More context here [2].
> > > >
> > > > [1] https://lists.denx.de/pipermail/u-boot/2021-June/451357.html
> > > 
> > > Does it help if you revert 4f0278dac56a658ef1e0967fec0bb95372a875bd ?
> > > 
> > 
> > Hey! After reverting the commit, but with PMIC disabled:
> > 
> > => dhcp
> > mdio_register: non unique device name 'ethernet at 5020000'
> > Could not get PHY for ethernet at 5020000: addr 1
> > 
> > > I added on CC the folks involved in the previous report.
> > 
> > Regards,
> > Anne
> 
> I think I'm on the right path :)  
> 
> 1. Included SUNXI_SETUP_REGULATORS=0 to the bl31 make
> 2. Changed the phy mode on arch/arm/dts/sun50i-h6-orangepi-one-plus.dts
>    From rgmii-id to rgmii
>    More info on [1][2][3]
> 3. Added this configs to configs/orangepi_one_plus_defconfig:
>    CONFIG_SPL_SPI_SUNXI=y
>    CONFIG_SUNXI_NO_PMIC=y
>    CONFIG_SUN8I_EMAC=y
> 
> Result: 
> 
> U-Boot 2023.04-gfd4ed6b (Apr 03 2023 - 20:38:50 +0000) Allwinner
> Technology
> 
> CPU:   Allwinner H6 (SUN50I)
> Model: OrangePi One Plus
> DRAM:  1 GiB 
> Core:  55 devices, 17 uclasses, devicetree: separate
> WDT:   Not starting watchdog at 7020400
> MMC:   mmc at 4020000: 0
> Loading Environment from FAT... Unable to read "uboot.env" from
> mmc0:1...
> In:    serial at 5000000
> Out:   serial at 5000000
> Err:   serial at 5000000
> Net:   eth0: ethernet at 5020000
> 
> => dhcp
> sun8i_emac_eth_start: Timeout
> => mdio list
> ethernet at 5020000:
> 1 - Generic PHY <--> ethernet at 5020000
> 
> Still no interface on Linux, but at least eth0 is detected on u-boot?
> 
> [1] https://forum.armbian.com/topic/7108-orangepi-zero-plus-ethernet-in-u-boot/
> [2] https://forum.openwrt.org/t/sunxi-target-broken-in-master/110643/12
> [3] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/drivers/net/phy/realtek.c?h=v5.10.79&id=bbc4d71d63549bcd003a430de18a72a742d8c91e
> 

Actually had commented out SUNXI_SETUP_REGULATORS=0, with it I see: 

Net:   PHY reset timed out
eth0: ethernet at 5020000
> Regards,
> Anne