From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: Anand Tiwari <anand.tiwari@oss.qualcomm.com>,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konradybcio@kernel.org>,
Abel Vesa <abelvesa@kernel.org>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>
Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, vishnu.saini@oss.qualcomm.com
Subject: Re: [PATCH v3 1/2] arm64: dts: qcom: hamoa-iot-evk: Add eDP display overlay
Date: Wed, 21 Oct 2026 12:05:10 +0200 [thread overview]
Message-ID: <aac44711-c2b2-45d6-896a-540aba9e3500@oss.qualcomm.com> (raw)
In-Reply-To: <20260922-edp_overlay_for-next-v3-1-2758d46ee174@oss.qualcomm.com>
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@oss.qualcomm.com>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Konrad
next prev parent reply other threads:[~2026-10-21 10:05 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-22 10:42 [PATCH v3 0/2] arm64: dts: qcom: Add eDP display overlays for hamoa and purwa IoT EVKs Anand Tiwari
2026-09-22 10:42 ` [PATCH v3 1/2] arm64: dts: qcom: hamoa-iot-evk: Add eDP display overlay Anand Tiwari
2026-10-21 10:05 ` Konrad Dybcio [this message]
2026-09-22 10:42 ` [PATCH v3 2/2] arm64: dts: qcom: purwa-iot-evk: " Anand Tiwari
2026-10-21 10:06 ` Konrad Dybcio
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