Radxa Rock 4C+ unable to boot using latest nightly LE13

Wuk-jvi · June 12, 2025 at 11:39 AM

Hi all,

I recently bought OKDO Radxa Rock 4C+ board. When tried to boot it using nightly I was not able to do so.
After opening a bug report, I was instructed to first post in forum.

Here is C/P from the bug report:
Describe the bug

Using latest nightly build of LibreELEC 13 I'm unable to boot. There is only green light, and blue light that should indicate activity is off. Pressing reset button, turning it on/off, changing hdmi port - noting helps

How to reproduce

Steps to reproduce the behavior:

Download latest nightly
Use Balena Etcher to transfer image to SD card
Turn on board

Information

LibreELEC Version: LibreELEC-RK3399.aarch64-13.0-nightly-20250611-4d467a6-rock-4c-plus.img.gz
Hardware Platform: OKDO Radxa Rock 4C+

Log file

No log available.

Context

According to #8887 this board should be supported.
I'm more than happy to try to get logs or anything that might help to boot this, but at the moment I don't know how.
I'm able to boot the board using DietPi v9.13.2 and get any info needed about the board

What are next steps to do and what information is needed to be able to either resolve this or update bug report?

**chewitt** · June 12, 2025 at 11:46 AM

Please share debug UART logs showing u-boot and (maybe) kernel boot output from both LE13 and DietPi images.

PANiCnz · June 12, 2025 at 9:36 PM

For what it's worth there appears to be two versions of this board, the earlier v1.2 with the M2 slot, and a latter 1.41 without the M2 slot. Not sure if this impact compatibility etc.

**ilmich** · June 22, 2025 at 7:30 PM

Wuk-jvi please share pic of the board.. unfortunately radxa is unreliable because with the same revision of this board it mounts different rams that are not compatible with the uboot currently used in libreelec. unfortunately it happened to me too. the only solution if this is the problem is to go back to the proprietary bootloader

Wuk-jvi · July 29, 2025 at 10:11 PM

Sorry for not answering sooner, I had to get serial cable, and then I did not have time.
Now I'll have some time to play with this.

It's later version of the board - v1.41.

For some reason I cannot upload bottom picture of the board, I'll try in another message.

Serial output latest LibreELEC (LibreELEC-RK3399.aarch64-13.0-nightly-20250725-f0482de-rock-4c-plus.img.gz):

Code

U-Boot TPL 2025.07 (Jul 25 2025 - 02:19:09)
pddr4_set_rate: change freq to 400MHz 0, 1
Channel 0: LPDDR4, 400MHz
BW=32 Col=10 Bk=8 CS0 Row=16 CS=1 Die BW=16 Size=2048MB
Channel 1: LPDDR4, 400MHz
BW=32 Col=10 Bk=8 CS0 Row=15 CS=1 Die BW=16 Size=2048MB
lpddr4_set_rate: change freq to 800MHz 1, 0
Trying to boot from BOOTROM
Returning to boot ROM...

Serial output of DietPi:

Code

DDR Version 1.30 20230417
In
channel 0
CS = 0
MR0=0xB8
MR4=0x2
MR5=0xFF
MR8=0x10
MR12=0x72
MR14=0x72
MR18=0x0
MR19=0x0
MR24=0x8
MR25=0xFF
channel 1
CS = 0
MR0=0xB8
MR4=0x2
MR5=0xFF
MR8=0x10
MR12=0x72
MR14=0x72
MR18=0x0
MR19=0x0
MR24=0x8
MR25=0xFF
channel 0 trainng pass!
channel 1 trainng pass!
change freq to 416MHz 0,1
Channel 0: LPDDR4,416MHz
Bus Width=32 Col=10 Bank=8 Row=16 CS=1 Die Bus-Width=16 Size=2048MB
Channel 1: LPDDR4,416MHz
Bus Width=32 Col=10 Bank=8 Row=16 CS=1 Die Bus-Width=16 Size=2048MB
256B stride
channel 0
CS = 0
MR0=0xB8
MR4=0x2
MR5=0xFF
MR8=0x10
MR12=0x72
MR14=0x72
MR18=0x0
MR19=0x0
MR24=0x8
MR25=0xFF
channel 1
CS = 0
MR0=0xB8
MR4=0x2
MR5=0xFF
MR8=0x10
MR12=0x72
MR14=0x72
MR18=0x0
MR19=0x0
MR24=0x8
MR25=0xFF
channel 0 trainng pass!
channel 1 trainng pass!
channel 0, cs 0, advanced trainng done
channel 1, cs 0, advanced trainng done
change freq to 666MHz 1,0
ch 0 ddrconfig = 0x101, ddrsize = 0x40
ch 1 ddrconfig = 0x101, ddrsize = 0x40
pmugrf_os_reg[2] = 0x32C1F2C1, stride = 0xD
ddr_set_rate to 328MHZ
ddr_set_rate to 666MHZ
ddr_set_rate to 416MHZ, ctl_index 0
ddr_set_rate to 666MHZ, ctl_index 1
support 416 328 666 MHz, current 666MHz
OUT

U-Boot SPL 2024.01-armbian-2024.01-S866c-P5743-H8c72-V8831-Bda0a-R448a (Oct 05 2024 - 02:32:20 +0000)
Trying to boot from MMC1
NOTICE:  BL31: v1.3(release):8f40012ab
NOTICE:  BL31: Built : 14:20:53, Feb 16 2023
NOTICE:  BL31: Rockchip release version: v1.1
INFO:    GICv3 with legacy support detected. ARM GICV3 driver initialized in EL3
INFO:    Using opteed sec cpu_context!
INFO:    boot cpu mask: 0
INFO:    plat_rockchip_pmu_init(1203): pd status 3e
INFO:    BL31: Initializing runtime services
WARNING: No OPTEE provided by BL2 boot loader, Booting device without OPTEE initialization. SMC`s destined for OPTEE will return SMC_UNK
ERROR:   Error initializing runtime service opteed_fast
INFO:    BL31: Preparing for EL3 exit to normal world
INFO:    Entry point address = 0x200000
INFO:    SPSR = 0x3c9
ns16550_serial serial@ff1a0000: pinctrl_select_state_full: uclass_get_device_by_phandle_id: err=-19


U-Boot 2024.01-armbian-2024.01-S866c-P5743-H8c72-V8831-Bda0a-R448a (Oct 05 2024 - 02:32:20 +0000)

SoC: Rockchip rk3399
Reset cause: POR
Model: Radxa ROCK 4C+
DRAM:  4 GiB (effective 3.9 GiB)
PMIC:  RK8090 (on=0x80, off=0x04)

Display More

Word trainng is disallowed so I changed it in output.

dietpi_dmesg.txt is attached