Part Number: AM5728
Other Parts Discussed in Thread: AM5728
Tool/software: Linux
Hello,
I am using AM5728 custom board which is similar to AM5728-EVM.But used display has MIPI interface, so there is Solomons SSD2828 RGB to MIPI bridge in between.
In connection with the display screen, we only connected the mipi interface, did not connect the I2C interface and the backlight.
Now i can get the clock on the mipi_clk, but my screen did not respond.
root@am57xx-evm:/# gst-launch-1.0 videotestsrc ! autovideosink
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
ERROR: from element /GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstKMSSink:autovideosink0-actual-sink-kms: GStreamer encountered a general resource error.
Additional debug info:
../../../git/sys/kms/gstkmssink.c(364): gst_kms_sink_show_frame (): /GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstKMSSink:autovideosink0-actual-sink-kms:
drmModeSetPlane failed: Permission denied (13)
Execution ended after 0:00:00.000775920
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...
root@am57xx-evm:/#
Didn't the am5728 detect the screen?
How to make am5728 always feel the screen exists?
Thanks,
Jay
