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Mon, 29 Jun 2026 07:03:22 -0700 (PDT) X-Received: by 2002:a05:6820:2dd7:b0:6a1:7ed6:9de with SMTP id 006d021491bc7-6a17ed60ad2mr558948eaf.3.1782741801604; Mon, 29 Jun 2026 07:03:21 -0700 (PDT) Received: from [192.168.120.170] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c1250a80b04sm283661766b.34.2026.06.29.07.03.19 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 29 Jun 2026 07:03:20 -0700 (PDT) Message-ID: Date: Mon, 29 Jun 2026 16:03:18 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 4/4] arm64: dts: qcom: Add IMDT QCS8550 SBC To: William Bright , Manivannan Sadhasivam Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org References: <20260610-imdt-qcs8550-sbc-rfc-v4-0-358e71d606bc@imd-tec.com> <20260610-imdt-qcs8550-sbc-rfc-v4-4-358e71d606bc@imd-tec.com> <8afbc9f9-15ff-4b60-9a0f-845f903d3c9a@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-Proofpoint-Spam-Info: AW1haW4tMjYwNjI5MDExNyBTYWx0ZWRfX5xN3Dbn2jrQS +KZ4oYido3yNLPQyjUABBNLd5uUPqHEw02JuCxI6TP+2vb+7IDkafDuEuiAPwcGcxNxp8c3SY+J 24VzEMTMwJ2UqvKXKDzlRCGO9pZ7e7E= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjI5MDExNyBTYWx0ZWRfXy2Af/5rVkeHY +j9pSy7cyC9j+uPhosE212lODufCBTe5RelnAYbvWXYb5NRhEOt7/rET1BtfZipDzytjW7gJ0ej 5PnSg8WGcUM2fsj2DMbjYwQMXOBwEP6skwptAefAPcHgv8OiW3hudlLjde2/wgkLUTaBITama+l kaYrfl4P5ohYxj9EJusPDnUOYZxVHNKwm8lz2qktFCbXhq09e+HqtMyad/Y1+cKK7awzp3wfx0A +8RT6i1NtfVR0XfEt2FxnZDHQZxlz5qSu8p7vCcbi5993+fTKEvU8Xi6qf+eFBx4jsDGRMBhq4v b97en/G1XeojiEy1FdEKFMsn1XdaDou3NNMCeoBBK4DFjfis+sOl1wzayQcjDvb+KliIpH7uhJ2 d/oM9fOL4MIGhyNA7KlGtfZyCSs8T0eWiD9E0uLL7vbqPmjLOdXrlGu61AXE+bgTp/GPu2/YXUj M/p7rDc6oZw3Rp/mKnA== X-Proofpoint-GUID: i7IOXaJ3iq_EM0PXOGUnBdv6np44aQR9 X-Authority-Analysis: v=2.4 cv=cefiaHDM c=1 sm=1 tr=0 ts=6a427b2b cx=c_pps a=lVi5GcDxkcJcfCmEjVJoaw==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=YMgV9FUhrdKAYTUUvYB2:22 a=8RGhZ6I6Z7cABIXISqEA:9 a=QEXdDO2ut3YA:10 a=rBiNkAWo9uy_4UTK5NWh:22 X-Proofpoint-ORIG-GUID: i7IOXaJ3iq_EM0PXOGUnBdv6np44aQR9 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-29_03,2026-06-26_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 impostorscore=0 lowpriorityscore=0 malwarescore=0 bulkscore=0 suspectscore=0 clxscore=1015 priorityscore=1501 adultscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2606290117 On 6/29/26 12:25 PM, William Bright wrote: > On Fri, Jun 26, 2026 at 05:18:20PM +0200, Konrad Dybcio wrote: [...] > The PCIe switch we are using is a NXP CBTU02044HEJ, this is a simple > 1->2 switch that is not PCIe enumerable. Given that there isn't support > for this IC already in the kernel and that it will take quite a few > weeks/months for me to cobble something together, I am thinking that it > might make sense to drop PCIe support from this patch-series in V5 and > then submit a seperate patch-series with a driver and bindings for this > IC whenever I get something working. Are you OK with this? Sure I'm a bit curious why do you have a switch there in the first place - is there anything else connected to the other port? Would you like for that to be switchable at runtime? +Mani will probably be interested Konrad