iMX6 TinyRex HDMI Input
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A powerful HDMI Input feature on iMX6 TinyRex Development Kit is achieved by using ADV7610 HDMI receiver chip. Detection, performance and essential commands are described here.
Note: These examples uses Linux kernel version 4.1.
Kernel detection
... adv7610_video: HDMI receiver adv7610 is found ...
I2C detection
HDMI receiver chip is connected via I2C3. The most important address for correct detection is 0x4c.
root@imx6-tinyrexmax:~# i2cdetect -y 2
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- UU -- -- -- UU -- -- -- -- -- -- -- -- --
30: -- -- UU -- UU -- UU -- -- -- -- -- -- -- UU --
40: UU -- -- -- -- -- -- -- -- -- -- -- UU -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
Listing modules
root@imx6-tinyrexmax:~# lsmod Module Size Used by mxc_v4l2_capture 27624 2 ipu_bg_overlay_sdc 5385 1 mxc_v4l2_capture ipu_still 2331 1 mxc_v4l2_capture ipu_prp_enc 5903 1 mxc_v4l2_capture ipu_csi_enc 3904 1 mxc_v4l2_capture ipu_fg_overlay_sdc 6130 1 mxc_v4l2_capture ov5647_camera_mipi_int 30566 0 adv7610_video 6373 0 v4l2_int_device 2872 4 ov5647_camera_mipi_int,adv7610_video,ipu_csi_enc,mxc_v4l2_capture mxc_dcic 6528 0
Resolution settings
Resolutions up to 720P are automatically detected.
Gstreamer
Capture single JPEG picture
gst-launch-1.0 v4l2src device="/dev/video0" num-buffers=1 ! video/x-raw,width=1280,height=720,framerate=30/1 ! videoconvert ! jpegenc ! filesink location=sampleadv_1280_720.jpeg
Video preview
gst-launch-1.0 v4l2src device="/dev/video0" ! video/x-raw,width=1280,height=720,framerate=30/1 ! videoconvert ! autovideosink
Video encode
gst-launch-1.0 v4l2src device="/dev/video0" num-buffers=1000 ! video/x-raw,width=1280,height=720,framerate=30/1 ! videoconvert ! queue ! vpuenc_h264 ! matroskamux ! filesink location=sample.mkv sync=false
Performance
| Resolution | FPS | Module | Command | Notes |
|---|---|---|---|---|
| 1920x1080 | =12 | Ultra | gst-launch-1.0 v4l2src device="/dev/video0" ! videoconvert ! autovideosink | Connected monitor 1920x1080, Booting from SATA |
| 1920x1080 | >=17 | Max | gst-launch-1.0 v4l2src device="/dev/video0" ! videoconvert ! autovideosink | Connected monitor 1920x1080, Booting from NFS |
| 1920x1080 | >=17 | Pro | gst-launch-1.0 v4l2src device="/dev/video0" ! videoconvert ! autovideosink | Connected monitor 1920x1080, Booting from SD |
| 1280x720 | >=29 | Ultra | gst-launch-1.0 v4l2src device="/dev/video0" ! videoconvert ! autovideosink | Connected monitor 1920x1080, Booting from SD |
| 1280x720 | >=29 | Max | gst-launch-1.0 v4l2src device="/dev/video0" ! videoconvert ! autovideosink | Connected monitor 1920x1080, Booting from NFS |
| 1280x720 | >=29 | Pro | gst-launch-1.0 v4l2src device="/dev/video0" ! videoconvert ! autovideosink | Connected monitor 1920x1080, Booting from SD |
| 800x600 | >=48 | Ultra | gst-launch-1.0 v4l2src device="/dev/video0" ! videoconvert ! autovideosink | Connected monitor 1920x1080, Booting from SD |
| 800x600 | >=48 | Max | gst-launch-1.0 v4l2src device="/dev/video0" ! videoconvert ! autovideosink | Connected monitor 1920x1080, Booting from NFS |
| 800x600 | >=48 | Pro | gst-launch-1.0 v4l2src device="/dev/video0" ! videoconvert ! autovideosink | Connected monitor 1920x1080, Booting from SD |