Hi all,
I am trying to connect a display panel using DP on Jacinto 7, I tried following this guide https://www.ti.com/lit/ml/spruis8/spruis8.pdf?ts=1602595761191&ref_url=https%253A%252F%252Fwww.google.com%252F
Jacinto works fine and I connect through USB/Serial Debug connector using PuTTY, but the display is not working.
I am using HP display EliteDisplay E232 with 1920 x 1080 at 60 Hz resolution. Display page https://support.hp.com/sg-en/document/c04746493
when it boots I noticed the following two errors:
1) psplash error:
[FAILED] Failed to start Start psplash boot splash screen.
See 'systemctl status psplash-start.service' for details.
[DEPEND] Dependency failed for Star…progress communication helper.
I tried to check the status of psplash-start
root@j7-evm:~# systemctl status psplash-start
* psplash-start.service - Start psplash boot splash screen
Loaded: loaded (/lib/systemd/system/psplash-start.service; enabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Wed 2020-06-17 14:17:21 UTC; 3 months 28 days ago
Process: 223 ExecStart=/usr/bin/psplash (code=exited, status=255/EXCEPTION)
Main PID: 223 (code=exited, status=255/EXCEPTION)
Jun 17 14:17:21 j7-evm psplash[223]: Error opening /dev/fb0
Jun 17 14:17:21 j7-evm systemd[1]: psplash-start.service: Main process exited, code=exited, status=255/EXCEPTION
Jun 17 14:17:21 j7-evm systemd[1]: psplash-start.service: Failed with result 'exit-code'.
Jun 17 14:17:21 j7-evm systemd[1]: Failed to start Start psplash boot splash screen.
Warning: Journal has been rotated since unit was started. Log output is incomplete or unavailable.
2) HW clocks error:
[FAILED] Failed to start Synchronize System and HW clocks.
See 'systemctl status sync-clocks.service' for details.
root@j7-evm:~# systemctl status sync-clocks
* sync-clocks.service - Synchronize System and HW clocks
Loaded: loaded (/etc/systemd/system/sync-clocks.service; enabled; vendor preset: disabled)
Active: failed (Result: exit-code) since Thu 2020-10-15 09:01:13 UTC; 13min ago
Process: 348 ExecStart=/sbin/hwclock --systohc (code=exited, status=1/FAILURE)
Main PID: 348 (code=exited, status=1/FAILURE)
Oct 15 09:01:13 j7-evm systemd[1]: Starting Synchronize System and HW clocks...
Oct 15 09:01:13 j7-evm hwclock[348]: hwclock: Cannot access the Hardware Clock via any known method.
Oct 15 09:01:13 j7-evm hwclock[348]: hwclock: Use the --verbose option to see the details of our search for an access method.
Oct 15 09:01:13 j7-evm systemd[1]: sync-clocks.service: Main process exited, code=exited, status=1/FAILURE
Oct 15 09:01:13 j7-evm systemd[1]: sync-clocks.service: Failed with result 'exit-code'.
Oct 15 09:01:13 j7-evm systemd[1]: Failed to start Synchronize System and HW clocks.
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I followed this thread https://e2e.ti.com/support/processors/f/791/t/831431
here is the output of commands mentioned in the threads:
=> run findfdt; run envboot
switch to partitions #0, OK
mmc1 is current device
SD/MMC found on device 1
55 bytes read in 1 ms (53.7 KiB/s)
Loaded env from uEnv.txt
Importing environment from mmc1 ...
=> print overlay_files
## Error: "overlay_files" not defined
and I couldn't find the uEnv.txt file in the boot partition of the image nor k3-j721e-dp0.dtbo that are mentioned in the thread.
Ayman,
