Hi all,

Env am using: Yocto 3.3.1 hardknott meta-raspberrypi bsp layer U-Boot 2021.01 (it pulls this in)

The boot on an RPi 4B consistently fails with:

<pre> U-Boot 2021.01 (Jan 11 2021 - 18:11:43 +0000) DRAM: 1.9 GiB RPI 4 Model B (0xb03114)

MMC: mmcnr@7e300000: 1, emmc2@7e340000: 0

Loading Environment from FAT... unable to select a mode In: serial Out: serial Err: serial Net: eth0: ethernet@7d580000 PCIe BRCM: link up, 5.0 Gbps x1 (SSC) starting USB... Bus xhci_pci: Register 5000420 NbrPorts 5 Starting the controller USB XHCI 1.00 scanning bus xhci_pci for devices... 2 USB Device(s) found scanning usb for storage devices... 0 Storage Device(s) found

Hit any key to stop autoboot: 0

switch to partitions #0, OK mmc0 is current device

** No partition table - mmc 0 ** Card did not respond to voltage select! : -110

Device 0: unknown device ... </pre>

Also, FYI:

U-Boot> mmcinfo Device: emmc2@7e340000 Manufacturer ID: 3 OEM: 5344 Name: SL64G Bus Speed: 25000000 Mode: MMC legacy Rd Block Len: 512 SD version 3.0 High Capacity: Yes Capacity: 59.5 GiB Bus Width: 4-bit Erase Group Size: 512 Bytes U-Boot>

Should 'Mode' be different?? High Speed? Unsure as to what will fix this... any help appreciated ! TIA,

Funny thing is, it was working a week back (with Yocto 3.2 - though even that doesn't work now; same issue)..

Regards, Kaiwan.