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3.10.1 Connecting an External USB Drive
To connect a USB drive, plug it into one of the USB ports. The system should recognize the drive immediately.
Check the kernel log to find the device name:
journalctl -k
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You will be able to mount its partitions (assuming mapping to /dev/sdb1):
mkdir /mnt/usb1
mount /dev/sdb1 /mnt/usb1
ls /mnt/usb1
3.11 Video
The RK3399-Q7 supports video output on HDMI, eDP and MIPI-DSI. Some of these interfaces are muxed on the
module.
The EVK software will use HDMI as the default video output. Connect a display to the HDMI port and a desktop
environment will be shown once booting has finished. Screen resolution will be set based on the display EDID
information. Resolutions up to 3840x2160 are supported.
For eDP and MIPI-DSI the Qseven LVDS pins are used which are routed to the Display connect. This expansion
slot uses a PCIe connector as mechanical connection, which allows easy development of adapter boards for
various different display types.
RK3399-Q7 User Manual
© Cherry Embedded Solutions GmbH
RK3399-Q7 Module
GPIO2_A2
eDP
1
MIPI_TX0
0
RK3399
SoC
MIPI_TX1/RX1
HDMI
Fig. 3.10: RK3399-Q7 video muxing
Fig. 3.11: HDMI port
Baseboard
LVDS A
Video
Conn-
ector
LVDS B
HDMI
TMDS
Jack
v1.6
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