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Fri, 31 Jul 2026 05:50:14 -0700 (PDT) X-Received: by 2002:a05:622a:2585:b0:51c:d8f:d77a with SMTP id d75a77b69052e-52b563c3a50mr469771cf.1.1785502214157; Fri, 31 Jul 2026 05:50:14 -0700 (PDT) Received: from [192.168.120.193] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c1fd3c5b0efsm147122166b.10.2026.07.31.05.50.10 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 31 Jul 2026 05:50:13 -0700 (PDT) Message-ID: <6d61d749-440f-40ad-82e5-e1e909afad06@oss.qualcomm.com> Date: Fri, 31 Jul 2026 14:50:09 +0200 Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 6/6] arm64: dts: qcom: rb3gen2: add Industrial BT UART overlay To: Rahul Samana , Bartosz Golaszewski , Marcel Holtmann , Luiz Augusto von Dentz , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Balakrishna Godavarthi , Rocky Liao , Manivannan Sadhasivam , Bjorn Andersson , Konrad Dybcio Cc: Bartosz Golaszewski , linux-arm-msm@vger.kernel.org, linux-bluetooth@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org, quic_mohamull@quicinc.com, quic_hbandi@quicinc.com, quic_anubhavg@quicinc.com References: <20260727-rb3-industrial-bt-uart-v2-0-2d100f30e202@oss.qualcomm.com> <20260727-rb3-industrial-bt-uart-v2-6-2d100f30e202@oss.qualcomm.com> <794424df-4714-43a4-b4b8-e960998ad1f1@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=H5vrBeYi c=1 sm=1 tr=0 ts=6a6c9a07 cx=c_pps a=7E5Bxpl4vBhpaufnMqZlrw==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=Um2Pa8k9VHT-vaBCBUpS:22 a=ejynXRg2g54x_2soN7sA:9 a=QEXdDO2ut3YA:10 a=pJ04lnu7RYOZP9TFuWaZ:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzMxMDA5NiBTYWx0ZWRfX+wIainhWSNBr 6NZZbCeczHcsPU9qUdO2rxwa/qHEoesCwGzczL9vlIWDTX4T98ljpXxubBMhffTrxd+uYPGYB3l tImkWXBUMyUWs1Ex2iJa/5bPv/8v7YJD2tyehwU0k99jhwXCgKiFW3TXLPyv4cgfJEn5Ha4Rl/i DhvXtV44GMTvOvv8/tzf2waetexyL3Y1vOzPyJFQBNVSAgaPTAqFb34vGJXsG7XcLw0r+GoB8oV IdecfqzycVDuGt0/XF8FUb6fcehB4nwxPvL/5fY34wwxEtapEKlwebGe52CXBm/14zy2aff2x5u vhEumqaytSwgyamj7FkBi5IFFXANHrul5zaE/OzHOXSK1xWd1aNb2rI+ISRlEQlnLgSZeCvH9tb 6337oi/G3F3opY7o8mOhi/2XLtqUp43aFdOAn1cFlKgRAVA4PSCGh8BB2fQAAcDzzO1sgZnrj9k 7NDYtlENAgpYtbXG0EA== X-Proofpoint-GUID: Rnb3avidozSroN5I58A4r-OKHSEHDhey X-Proofpoint-ORIG-GUID: Rnb3avidozSroN5I58A4r-OKHSEHDhey X-Proofpoint-Spam-Info: AW1haW4tMjYwNzMxMDA5NiBTYWx0ZWRfXwu5zmpY11UCC 1Htfzd72VFo0IVSLA1mCDgEMdnZVGLjIHRIMQOm1NQXuwBpkQJXc19Vj7c134EfEGh+4z+vElD/ o2Jjs3SLs4WyKkWmfTzqjfqUfrjsVSw= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-31_04,2026-07-30_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 clxscore=1015 impostorscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 spamscore=0 priorityscore=1501 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607310096 On 7/31/26 8:53 AM, Rahul Samana wrote: > > > On 29-07-2026 18:01, Konrad Dybcio wrote: >> On 7/27/26 5:45 PM, Rahul Samana wrote: >>> The reworked RB3 Gen 2 Industrial mezzanine keeps the common Industrial >>> mezzanine hardware description but routes QCC2072 Bluetooth over UART4 >>> instead of the default Bluetooth-over-USB path. >>> >>> Build this variant by applying the common Industrial mezzanine overlay >>> first, followed by the BT UART overlay. The overlay models the M.2 E-key >>> connector graph endpoints for PCIe and UART, and disables the on-board >>> WCN6750 PMU and UART7 path so the M.2 QCC2072 Bluetooth controller can be >>> used instead. >> >> So is the onboard module disabled? Can we not just use two in parallel? >> > > The Industrial mezzanine variants do not support the on-board WCN6750 > wireless path. The common Industrial mezzanine overlay already disables > the on-board Wi-Fi node. What does 'do not support' it mean here? They are physically present as part of the SoM, so unless the lanes are somehow diverted away, why is it not? Konrad