Hi Joris,
On Mon, Jan 27, 2020 at 1:16 PM Joris OFFOUGA offougajoris@gmail.com wrote:
I can't find a fix yet. If you find one it would be great.
I noticed that the Ethernet regression happens because the ENET_RST_B signal keeps always at 0, which makes the PHY to never becomes active.
The Ethernet PHY reset comes from a GPIO expander (74LV595PW), which is connected to SPI GPIO lines.
Both the GPIO expander driver (CONFIG_DM_74X164) as well as the SPI GPIO driver (CONFIG_SOFT_SPI) are enabled at configs/mx7dsabresd_defconfig.
The device tree has:
&fec1 { .... phy-reset-gpios = <&extended_io 5 GPIO_ACTIVE_LOW>;
Port 5 of the 74LV595PW is the Ethernet PHY reset pin.
However, this is what we get in U-Boot:
Net: Could not get PHY for FEC0: addr 0 No ethernet found.
Not sure why DM is not properly bringing the Ethernet PHY back to 1.
Any ideas?
Thanks