https://bugzilla.kernel.org/show_bug.cgi?id=212109

Bug ID: 212109 Summary: Analogix ANX6345 bridge fails to initialize after suspend Product: Drivers Version: 2.5 Kernel Version: 5.11.4 Hardware: ARM OS: Linux Tree: Mainline Status: NEW Severity: high Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: jaron@kent-dobias.com Regression: No

Created attachment 295705 --> https://bugzilla.kernel.org/attachment.cgi?id=295705&action=edit kernel config

My hardware is a Pine64 Pinebook, which has an Analogix ANX6345 eDP bridge. Starting with the 5.11 series, the screen fails to turn on after suspend, producing the error: '[drm:anx6345_bridge_enable] *ERROR* Failed eDP transmitter initialization: -13'.

Steps to reproduce:

1) boot series 5.11 kernel on the Pinebook 2) close lid 3) open lid.

Actual results: the display does not turn on.

Expected results: the display turns on.

Build date & hardware: 2021-03-07 on Arch Linux (x86-64 cross compile), run on a Pine64 Pinebook.

Additional information: the latest 5.10 kernel (5.10.21) compiled with the same config does not exhibit the bug.