Greetings, I have a need to adjust the U-Boot device-tree live with some board revision specific fixups. It would seem I need to enable OF_LIVE to do so but when I do this on imx8mm U-Boot proper seems to fail phy_connect() called from the network device probe.
The board I'm working with is an imx8mm-venice board and using imx8mm_venice_defconfig (without OF_LIVE) results in: U-Boot 2024.10-00735-gc530f6079c70 (Oct 07 2024 - 12:58:38 -0700) CPU: Freescale i.MX8MMQ rev1.0 1600 MHz (running at 1200 MHz) CPU: Industrial temperature grade (-40C to 105C) at 44C Reset cause: POR Model: Gateworks Venice GW73xx-0x i.MX8MM Development Kit DRAM: 4 GiB Core: 226 devices, 32 uclasses, devicetree: separate WDT: Started watchdog@30280000 with servicing every 1000ms (60s timeout) MMC: FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2 Loading Environment from MMC... Reading from redundant MMC(2)... OK In: serial@30890000 Out: serial@30890000 Err: serial@30890000 SEC0: RNG instantiated Net: GPY111 eth0: ethernet@30be0000 [PRIME] GSC : boot watchdog disabled Thermal protection:enabled at 96C Hit any key to stop autoboot: 0 Yet as soon as I enable OF_LIVE: U-Boot 2024.10-00735-gc530f6079c70 (Oct 07 2024 - 12:59:35 -0700) CPU: Freescale i.MX8MMQ rev1.0 1600 MHz (running at 1200 MHz) CPU: Industrial temperature grade (-40C to 105C) at 49C Reset cause: POR Model: Gateworks Venice GW73xx-0x i.MX8MM Development Kit DRAM: 4 GiB Core: 214 devices, 32 uclasses, devicetree: separate WDT: Started watchdog@30280000 with servicing every 1000ms (60s timeout) MMC: FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2 Loading Environment from MMC... Reading from redundant MMC(2)... OK In: serial@30890000 Out: serial@30890000 Err: serial@30890000 SEC0: RNG instantiated Net: Could not get PHY for mdio: addr 0 Could not get PHY for FEC0: addr 0 Could not get PHY for mdio: addr 0 Could not get PHY for FEC0: addr 0 No ethernet found. ^^^ phy_connect failing Any idea what I'm missing here? Are there other ways I should be modifying the live dt in U-Boot? Best Regards, Tim
