Add eDP display overlays for hamoa and purwa IoT EVKs - #977
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Ricardo Salveti (ricardosalveti) and
Trilok Soni (trsoni)
August 18, 2026 17:46
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Merge Check Failed: No Change Task Found No associated change tasks found for CR 4543794 on any of the following entities: Entities:
CR: 4543794 Please ensure the CR has a change task associated with at least one of the entities for this branch. |
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August 19, 2026 08:56
Hamoa IoT EVKs are available with and without an eDP panel. When the panel is absent, DP3 is unused, but the base DTS still describes the eDP panel and display path. This causes the eDP driver to probe an unavailable panel, resulting in AUX probe timeouts and missing display modes. Userspace then attempts display commits through the eDP connector, causing repeated DPU vblank, frame-done, and IRQ timeout errors. Move the eDP-specific nodes into an overlay so the base DTB describes the configuration without the panel, while the overlay enables eDP for boards with the panel connected. DT overlays cannot remove properties from a node defined in the base DTB, so the /delete-property/ of #sound-dai-cells is moved into the base DTS instead of the overlay, where it takes effect. Link: https://lore.kernel.org/all/20260818-edp_overlay_for-next-v2-1-bd811d378fb7@oss.qualcomm.com/ Signed-off-by: Anand Tiwari <anand.tiwari@oss.qualcomm.com>
Purwa IoT EVKs are available with and without an eDP panel. When the panel is absent, DP3 is unused, but the base DTS still describes the eDP panel and display path. This causes the eDP driver to probe an unavailable panel, resulting in AUX probe timeouts and missing display modes. Userspace then attempts display commits through the eDP connector, causing repeated DPU vblank, frame-done, and IRQ timeout errors. Move the eDP-specific nodes into an overlay so the base DTB describes the configuration without the panel, while the overlay enables eDP for boards with the panel connected. DT overlays cannot remove properties from a node defined in the base DTB, so the /delete-property/ of #sound-dai-cells is moved into the base DTS instead of the overlay, where it takes effect. Link: https://lore.kernel.org/all/20260818-edp_overlay_for-next-v2-2-bd811d378fb7@oss.qualcomm.com/ Signed-off-by: Anand Tiwari <anand.tiwari@oss.qualcomm.com>
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Merge Check Failed: CR Not Eligible for Merge CR 4543794 is not eligible for merge. The parent software image for kernel.qli.2.0 is not development complete. Entity: Please ensure the CR passes both CCT (ComponentChangeTasks) and ICT (Integration Change Tasks) validations. |
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Both Hamoa and Purwa IoT EVKs are available in headed and headless
variants. The headed variants use an eDP display panel connected via
the DP3 controller, while the headless variants do not include a
display.
The existing DT is causing the eDP-panel driver to probe an unavailable
panel, resulting in AUX probe timeouts and missing display modes.
Userspace then attempts display commits through the eDP connector,
causing repeated DPU vblank, frame-done, and IRQ timeout errors.
Move the eDP-specific nodes out of the base DTS files into separate
DTBO overlays for each board. This allows the base DTBs to be used
as-is for headless variants, while the composite DTBs enable eDP
support on headed variants.
CRs-Fixed: 4543794, 4543797