Rockchip Known Issues & Error Fixes
Search-friendly fixes for the error messages Rockchip engineers hit most, from flashing and boot to PCIe, Ethernet, USB, camera and RKNN. Each page lists the exact log line, likely causes and ordered fixes.
rkdeveloptool
Flashing
Download boot failed!
rkdeveloptool "Download boot failed!" in MaskROM: Causes and Fix
not found any devices!
rkdeveloptool "not found any devices!": Board Not Detected Over USB
PCIe
Ethernet
stmmac_open: Cannot attach to PHY (error: -19)
Rockchip Ethernet "Cannot attach to PHY (error: -19)": Fix
Link is Up - 1Gbps/Full but no DHCP / no traffic
Rockchip Ethernet Link Up but No Traffic (RGMII tx_delay / rx_delay)
USB
Debugging
mmc0: error -110 whilst initialising SD card
Rockchip "error -110 whilst initialising SD card": SD Card Not Working
Starting kernel ...
Rockchip Board Hangs After "Starting kernel ...": No Kernel Output
[drm] Cannot find any crtc or sizes
Rockchip HDMI No Display: "[drm] Cannot find any crtc or sizes"
Linux
RKNN
rknn_init fail! ret=-6 (RKNN_ERR_MODEL_INVALID)
RKNN "rknn_init fail! ret=-6" RKNN_ERR_MODEL_INVALID: Fix
RKNN_ERR_TARGET_PLATFORM_UNMATCH (-13)
RKNN_ERR_TARGET_PLATFORM_UNMATCH (-13): Model Built for Another SoC
Camera
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