I've try several times to boot libreelec on my rock960(c) sbc.
After making bootable sd card in every methods i know, win32image/ balenaecher , sdc just ignore the sd card and skip into emmc debian.
then i cancel the uboot fastboot , force it boot from sdmmc
`
Hit any key to stop autoboot: 0
=> setenv devnum 1; run mmc_boot
switch to partitions #0, OK
mmc1 is current device
Scanning mmc 1:1...
Found /extlinux/extlinux.conf
Retrieving file: /extlinux/extlinux.conf
reading /extlinux/extlinux.conf
226 bytes read in 3 ms (73.2 KiB/s)
1: LibreELEC
Retrieving file: /KERNEL
reading /KERNEL
23912456 bytes read in 1509 ms (15.1 MiB/s)
append: boot=UUID=1507-1947 disk=UUID=1fbab003-ab9a-42ee-8dcb-5ab2404e6770 quiet console=uart8250,mmio32,0xff1a0000 console=tty0 coherent_pool=2M cec.debounce_ms=5000
Retrieving file: /rk3399-rock960.dtb
reading /rk3399-rock960.dtb
77983 bytes read in 8 ms (9.3 MiB/s)
## Flattened Device Tree blob at 01f00000
Booting using the fdt blob at 0x1f00000
Loading Device Tree to 000000007def0000, end 000000007df0609e ... OK
Starting kernel ...
[ 1.148515] rockchip-typec-phy ff800000.phy: wait pma ready timeout
[ 1.149411] phy phy-ff800000.phy.12: phy poweron failed --> -110
[ 1.150205] dwc3 fe900000.usb: error -ETIMEDOUT: failed to initialize core
[ 1.226629] dw-apb-uart ff180000.serial: Failed to create device link (0x180) with 0-001b
[ 1.277356] dw-apb-uart ff180000.serial: Failed to create device link (0x180) with 0-001b
[ 1.325301] thermal_sys: Failed to bind 'cpu-thermal' with 'cpufreq-cpu4': -17
[ 1.435403] mmc1: tuning execution failed: -5
[ 1.435817] mmc1: error -5 whilst initialising SD card
[ 1.562079] mmc1: tuning execution failed: -5
[ 1.921629] rockchip-pcie f8000000.pcie: PCIe link train ing gen1 timeout!
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after few minutes , will fallback to on-emmc debian.
Any Information should i provide more to solve it . thanks
