S B C X U s e r ' s G u i d e
v . 1 . 0 . 1
Pin #
SOM pin
#
Pin name
Function
Notes
2, 5, 8,
11, 17
-
DGND
Ground
14
-
NC
Not connected
20, 21,
22, 23
-
SH_HDMI
Shield
5.7.1
Accessing the peripheral
HDMI display can be enabled passing the
video
kernel command line
by the U-Boot bootloader:
addhdmi=setenv bootargs ${bootargs}
video=mxcfb0:dev=hdmi,1920x1080M@60,bpp=32
5.7.1.1
Linux messages at boot time:
root@axel-lite:~# dmesg | grep hdmi
[ 0.439643] mxc_sdc_fb fb.23: register mxc display driver hdmi
[ 0.439710] mxc_hdmi 20e0000.hdmi_video: Detected HDMI
controller 0x13:0xa:0xa0:0xc1
[ 0.486715] mxc_sdc_fb fb.24: register mxc display driver hdmi
[ 0.486733] mxc_hdmi 20e0000.hdmi_video: Error only one HDMI
output support now!
[ 0.502501] mxc_hdmi 20e0000.hdmi_video: Read EDID again
[ 0.503318] mxc_hdmi 20e0000.hdmi_video: No modes read from
edid
[ 0.503333] mxc_hdmi 20e0000.hdmi_video: create default
modelist
December, 2019
43/139
Summary of Contents for SBC AXEL
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