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Tue, 27 Oct 2026 04:20:53 -0700 (PDT) Received: from [192.168.226.26] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-6b45f7e6256sm3277505a12.31.2026.10.27.04.20.51 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 27 Oct 2026 04:20:52 -0700 (PDT) Message-ID: Date: Tue, 27 Oct 2026 12:20:50 +0100 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] arm64: dts: qcom: monaco-ac-evk: Describe the PCIe M.2 Key E connector To: Wei Deng , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: Abel Vesa , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, quic_chezhou@quicinc.com, cheng.jiang@oss.qualcomm.com, shuai.zhang@oss.qualcomm.com, jinwang.li@oss.qualcomm.com, xiuzhuo.shang@oss.qualcomm.com, mengshi.wu@oss.qualcomm.com References: <20261021104709.1428234-1-wei.deng@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20261021104709.1428234-1-wei.deng@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: 2wqIKF4Cy_dkOsLudnLepSLUzjPWePkz X-Authority-Analysis: v=2.4 cv=Sfti5fRu c=1 sm=1 tr=0 ts=6ae08916 cx=c_pps a=mPf7EqFMSY9/WdsSgAYMbA==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yx91gb_oNiZeI1HMLzn7:22 a=EUspDBNiAAAA:8 a=1tuRgrbA9oXq7jUc8RoA:9 a=QEXdDO2ut3YA:10 a=dawVfQjAaf238kedN5IG:22 X-Proofpoint-GUID: 2wqIKF4Cy_dkOsLudnLepSLUzjPWePkz X-Proofpoint-Spam-Info: AW1haW4tMjYxMDI3MDA0NSBTYWx0ZWRfX95S2ezUmKTaB nqzMi+AOOMWKIyvk8cr9SVfcgHZD8l1kNidqds8QUnfrvpiEK9/fL1ZHUbxqnWhLRhTJ6EweR5a qA1y7DnLJ0KPbvekjUl2BaJRNWyeLK4= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDI3MDA0NSBTYWx0ZWRfX/LhHR8Ih3T1o q1dBhy4F7SQOQ62cdkMX/lf3wZ/7VsB0uqa5ZGcwRWewib6ceqbannGwEfW4+D1dVPQ1wNGGfOa QhSByceQchZKTN/fvWqjFTFMKb5se835vhI/PV2rAiHq1XZURk8T+YG16w0QuLh5e8n2fy9Ys6I 12enCWF9sT9BMbDCvVRgBgYzv9NNuY59eJFVEh/0MTtbk6GdkqwGEhEJS5LOnEpKwOL6ZVfubx0 VcyZAF64Fu2Lqk5ap8m6N6NPDJz/HBo49+AbFl1MJjKcE4BLWtW+SadDOaqr1kwLppjgNljTsJN rE9l9DMVlaNqceVYuBGkYseciPAn8o4i/MKwiZo0LMYBXOQTpK9rjl0ZMOBZO8TqNxDTmHFs/M2 HOUrH+fzPMW5YXr8IKAo2Nx1wNlda34P+zIEq8sa7j9xApRluRnyDZuApvIKZbllPjV3VXyJ9h7 TbOsCDQrkO6Xr4BXfbg== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.138,FMLib:17.12.100.49 definitions=2026-10-27_02,2026-10-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 bulkscore=0 clxscore=1015 adultscore=0 priorityscore=1501 malwarescore=0 lowpriorityscore=0 impostorscore=0 spamscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610190000 definitions=main-2610270045 On 10/21/26 12:47 PM, Wei Deng wrote: > The Monaco AC EVK has a PCIe M.2 Mechanical Key E connector to > connect wireless connectivity cards over PCIe and UART interfaces. Hence, > describe the connector node and link it with the PCIe 0 Root Port and > UART2 nodes through graph port/endpoint. > > The port/endpoint nodes are defined inline in the board file rather > than as empty anchor nodes in the SoC DTSI, so that > of_graph_is_present() only returns true for boards that have an M.2 > Key E connector present, preventing unintended pwrseq probe on boards > with soldered wireless chips (e.g. qcs8300-ride). > > The connector's 3.3V supply is described as a fixed always-on regulator > (vreg_wcn_3p3), which is required by the pcie-m2-e-connector binding. > > Also add the serial1 = &uart2 alias, which is required for the > Bluetooth serdev device to be enumerated on the UART2 interface. > > Signed-off-by: Wei Deng > --- Reviewed-by: Konrad Dybcio Konrad