On Tue, Jul 04, 2023 at 11:22:29PM +0000, Anne Macedo 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 [2] https://github.com/linux-sunxi/meta-sunxi/issues/387
Regards, Anne
Just wanted to share a summary of my findings about the ethernet on the Orange Pi One Plus (Allwinner H6).
1. PMIC should not be disabled. I tested and if I disable PMIC, MAC never turns on, even if I force the gpio PD6 pin to be on. When building tfa, use SUNXI_SETUP_REGULATORS=1 or just don't pass it.
2. These configs are needed on configs/orangepi_one_plus_defconfig
CONFIG_SPL_SPI_SUNXI=y CONFIG_SUN8I_EMAC=y
3. With this config, there's this strange behavior where ethernet is only detected after a crash:
# Fresh boot Net: Could not get PHY for ethernet@5020000: addr 1 No ethernet found.
# Forcing the board to crash => mii dump "Synchronous Abort" handler, esr 0x96000044
Code: 32000021 d5033fbf 91408013 f9481a60 (b9004801) Resetting CPU ...
resetting ...
# Reboot Net: eth0: ethernet@5020000
4. I'm testing CONFIG_MACPWR="PD6" and that successfully enabled MAC on u-boot (I see the LEDs turning on). However, I see the behaviour from #3 but crash-rebooting doesn't seem to enable ethernet...
Regards, Anne