Re: [PATCH v3 1/2] arm64: dts: qcom: hamoa-iot-evk: Add eDP display overlay
From: Konrad Dybcio
Date: Wed Oct 21 2026 - 06:05:28 EST
On 9/22/26 12:42 PM, Anand Tiwari wrote:
> Hamoa IoT EVK variants are available with and without an eDP panel.
> When the panel is not connected, DP3 is unused, but the base
> DTS still describes the eDP panel and display path.
>
> This causes 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 DP3 and eDP panel specific nodes into an overlay so the base
> DTB describes the configuration without the panel, while the overlay
> enables eDP panel for boards with the panel connected.
>
> DT overlays cannot remove properties from a node defined in the base
> DTB, so keeping the /delete-property/ of #sound-dai-cells in base DTS
> where it takes effect.
>
> Signed-off-by: Anand Tiwari <anand.tiwari@xxxxxxxxxxxxxxxx>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
Konrad