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Wed, 21 Oct 2026 03:05:13 -0700 (PDT) Received: from [192.168.226.26] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c4679005390sm59881666b.70.2026.10.21.03.05.11 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 21 Oct 2026 03:05:12 -0700 (PDT) Message-ID: Date: Wed, 21 Oct 2026 12:05:10 +0200 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 1/2] arm64: dts: qcom: hamoa-iot-evk: Add eDP display overlay To: Anand Tiwari , Bjorn Andersson , Konrad Dybcio , Abel Vesa , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, vishnu.saini@oss.qualcomm.com References: <20260922-edp_overlay_for-next-v3-0-2758d46ee174@oss.qualcomm.com> <20260922-edp_overlay_for-next-v3-1-2758d46ee174@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260922-edp_overlay_for-next-v3-1-2758d46ee174@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=YuKa1IYX c=1 sm=1 tr=0 ts=6ad88e5b cx=c_pps a=HLyN3IcIa5EE8TELMZ618Q==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=ZpdpYltYx_vBUK5n70dp:22 a=EUspDBNiAAAA:8 a=FpWcO8zvdDYuGJGNxnYA:9 a=QEXdDO2ut3YA:10 a=bTQJ7kPSJx9SKPbeHEYW:22 X-Proofpoint-Spam-Info: AW1haW4tMjYxMDIxMDAzOSBTYWx0ZWRfX6H4G//9sc3lU bmqTmQfbCqUT5VbCXNV0VsTVlWa/eOMcECGsNN22bo1p6k5K92vay2/MR8HN5C7TWivkVlPSnrS iaFrw9P5trProJqkq7AORnLMZz3OA7o= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDIxMDAzOSBTYWx0ZWRfX8cgTj5Cnzx/8 +77tbg7y/GVX1pKVLybjcg42omh2tmob9Nr434VpOfY/Z2yy/TvZtVmDynQGlyJ02x/zYtoPNV5 GD6s4IyRM4Pt8bchBJ/DES1NubnckGpJLhjkaXIYxs8E9fbF6n1O2KaRLe2fExhBTLCkkfjb/Dg mi1WaKVlMSu1gax++uZq5oqCEeDwRUrzB7Tngz2RKgKeMIwfpT5TfhtxCBClQevOmidHAPkX4fN wvPH+ma9uTM8ixZsWYcAsm1cJridFxlFDQnbgArDK34Z4zAQJiP/lvfn1WXPBW460svENDCHZp2 0y+Dn3wdAKduIjJtl2Gh6dwXj1rr/goU/rSOpzQZ7QLm0lbQBqrbZky3Eo4c8SWgN3bO/wieEwG eull4kGQ2TcVaKngoPNgfwmZcfrAcp+bqMMyKlxvbXK0iB/OWISyOKM/hM0C8o3Bg08jbL8FqIB oPvyG8CjVSxLMPeV12g== X-Proofpoint-GUID: 8mkk688kzxidluB5NQbmN3CILeAb3U_m X-Proofpoint-ORIG-GUID: 8mkk688kzxidluB5NQbmN3CILeAb3U_m X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-10-21_02,2026-10-19_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 impostorscore=0 suspectscore=0 spamscore=0 clxscore=1015 phishscore=0 adultscore=0 bulkscore=0 malwarescore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610190000 definitions=main-2610210039 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 > --- Reviewed-by: Konrad Dybcio Konrad