Messages in this thread |  | | Date | Sun, 26 Apr 2026 03:38:49 +0530 | | From | Mohit Dsor <> | | Subject | [REGRESSION] Resolutions broken after "drm/msm: dsi: fix PLL init in bonded mode" |
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Hi Neil, all,
We are seeing a regression after:
drm/msm: dsi: fix PLL init in bonded mode https://lore.kernel.org/r/20251027-topic-sm8x50-fix-dsi-bonded-v1-1-a477cd3f907d@linaro.org
Issue: - Resolutions are broken after this change. Like if we try to run 720p60 it will be 720p30. Even though the byte_clk is set correctly, the bridge is receiving half the byte clock. Some divider is getting set which is causing the byte_clk to get half, ultimately fps to get half. Some other resolutions may or may not be broken
Reproduction: - Used QNX RB3Gen2 Core kit with lilliput display and lt9611uxc dsi to hdmi bridge. - Run 720p60 usecase on hdmi with dsi to hdmi bridge.
Expected behavior: - Display should support the expected resolutions correctly.
Actual behavior: - No display on lilliput display.
Additional details: - Reverting this change locally avoids the issue.
Could you please take a look?
Thanks, Mohit
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