Ethernet for U-BOOT on STM32H753i-EVAL2

technicr · ‎2024-06-13

Hi,

I have the STM32H753i-EVAL2 and need to boot from TFTP using U-BOOT. As the STM32H743i-EVAL is very similar to STM32H753i-EVAL2, I uses the stm32h743-eval_defconfig configuration in U-BOOT. I also added the

- Networking support
- Synopsys Designware Ethernet MAC
- Synopsys DWC Ethernet QOS device support for STM32
- Enable RMII
- Microchip(SMSC) Ethernet PHYs support for LAN8742A

and enabled the ethernet in the stm32h743i-eval.dts file:

&mac {
     status = "okay";
     pinctrl-0 = <&ethernet_rmii>;
     pinctrl-names = "default";
     phy-mode = "rmii";
     phy-handle = <&phy0>;

     mdio0 {
         #address-cells = <1>;
         #size-cells = <0>;
         compatible = "snps,dwmac-mdio";
         phy0: ethernet-phy@0 {
             reg = <0>;
         };
     };
};

U-BOOT loads, but will not initialize ethernet:

U-Boot 2024.07-rc4-00012-g1ebd659cf0-dirty (Jun 13 2024 - 11:27:54 -0400)

Model: STMicroelectronics STM32H743i-EVAL board
DRAM: 32 MiB
Core: 34 devices, 18 uclasses, devicetree: separate
MMC: STM32 SD/MMC: 0
Loading Environment from nowhere... OK
In: serial@40011000
Out: serial@40011000
Err: serial@40011000
Net: Could not get PHY for ethernet@40028000: addr 0 /* Address comes from .dts file */
No ethernet found.

Hit SPACE in 3 seconds to stop autoboot.
switch to partitions #0, OK
mmc0 is current device
Scanning mmc 0:1...
U-Boot >

Could you tell what did I miss and how to make U-BOOT to connect to the ethernet.

Thanks