HiKey960 AOSP+OP-TEE display distortion issue

[dvyurij]

Hi, I have a problem with AOSP+OP-TEE hdmi displaying

board: HiKey960 4GB
branch version: 3.4.2
display monitor: 7inch HDMI LCD(B) USB Capacitive Touch 800x480 Pixel Rev2.1

Touch works but display distortion happens.
Monitor display and touch works well with my windows PC.

I’ve edited resolution params in BoardConfig.mk or device-hikey960.mk at optee_android_manifest/device/linaro/hikey/hikey960 and built, but I couldn’t solve this problem.

It would be very helpful to tell me some method to solve.

There might be some way considering of the post below, I guess.

Linksprite Touch Display enabled on AOSP for HiKey and HiKey960

[dvyurij]

I found the solution.

Hikey960 Screen Problem

I double check source I built. There is no change in kirin_drm_overlay_utils.c. I changed the file according to link you sent. Finally, my screen is working. . Before your last post, I think, kirin_drm_overlay_utils.c wasn’t changed in optee_android_manifest. Thanks @jstultz. @vchong thank you a lot. Can you check optee_android_manifest for kirin_drm_overlay_utils.c . Because, I run ./sync-p-hikey960.sh but there is no change. NOTE : If you plug USB for adb, screen is closing…

I just applied the source and built, flashed according to the below page.
https://android-review.googlesource.com/c/kernel/hikey-linaro/+/889696/2/drivers/gpu/drm/hisilicon/kirin960/kirin_drm_overlay_utils.c#802