[SRU][J:linux-xilinx-zynqmp][PATCH v2 0/1] Fix DP not working on Kria boards with 1.04 firmware

Wei-Lin Chang weilin.chang at canonical.com
Fri Jun 13 10:11:55 UTC 2025


BugLink: https://bugs.launchpad.net/bugs/2114250

SRU Justification

[Changes v1 -> v2]

* Add <Where problems could occur> section

[Impact]

* DP is not working after v1.04 firmware update on Xilinx Kria boards

[Fix]

* Clean cherry-pick from upstream
* be318d01a903: drm: xlnx: dp: Reset DisplayPort IP


[Test Plan]

* I hooked up a DP monitor to a KV260 with firmware v1.04 and Jammy
image installed, DP does not work before applying the patch, and works
after applying the patch.

[Where problems could occur]

* Very low potential for regression. This patch just asserts DisplayPort
reset signal before deasserting.

Rohit Visavalia (1):
  drm: xlnx: dp: Reset DisplayPort IP

 drivers/gpu/drm/xlnx/zynqmp_dp.c | 4 ++++
 1 file changed, 4 insertions(+)

-- 
2.43.0




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