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Mon, 31 Aug 2026 00:54:45 -0700 (PDT) X-Received: by 2002:ac8:7f4f:0:b0:517:6162:daf5 with SMTP id d75a77b69052e-52fb95f4e1amr193281791cf.3.1788162885465; Mon, 31 Aug 2026 00:54:45 -0700 (PDT) Received: from [192.168.202.12] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-6a611b5c3f7sm3232618a12.6.2026.08.31.00.54.41 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 31 Aug 2026 00:54:43 -0700 (PDT) Message-ID: Date: Mon, 31 Aug 2026 09:54:40 +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 v2 1/4] dt-bindings: phy: qcom: add Nord QMP PCIe PHY binding To: Krishna Chaitanya Chundru , Vinod Koul , Neil Armstrong , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Lorenzo Pieralisi , =?UTF-8?Q?Krzysztof_Wilczy=C5=84ski?= , Manivannan Sadhasivam , Bjorn Helgaas , Bjorn Andersson , Maxime Chevallier , Philipp Zabel Cc: linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org References: <20260828-nord-v2-0-18bf59d19d6f@oss.qualcomm.com> <20260828-nord-v2-1-18bf59d19d6f@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260828-nord-v2-1-18bf59d19d6f@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: -KOTnaxSWjIoW_uOG5nHS0eF0vNHr7-M X-Proofpoint-Spam-Info: AW1haW4tMjYwODMxMDA2NiBTYWx0ZWRfX8aSZreqxGh1F btWaXnemLSxJGIXWxl8zAyleQXyJrDuLViYUcZqy3HOh1ToZKcXxCDbtGJ1/jK86gWm9LgyZZJh Ysapn3SP8c7n1+Bm6dpfkeit1Plmh9E= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODMxMDA2NiBTYWx0ZWRfX0sPMeQTkDfIc UbUREd2Qr1kiK8oPCNRtUBT/37Ivz4Kvdqs30qhGfan0XpiJ4cmc8i427TlaUqSUmOsqXY4vM3j SlkCGaT2ca5p/mw037X4dsnd2p6or8Rk5o4sQfWpD+Y2gvMvXf/utthiqpj+lCKjKjUKfAtsiJe vdDVLQZlpfxHVt1Qmyck+lCgI1i34WgWYMregq9S5lyAP88QMYzuodGh+n3pblWFpD12/zrAib1 CAl2diuGv+tyhRcgGYPj2XHBBSvRYQlCFdZCzv0Tc3AIFrrg7wNlDLi/cj8hs3AA2YLTEZhGerf AjfeOQAdt/cxWbeWq2UL/1Gxd4zU8k+LmCMzq4RMQslr8bF74DdI+LqlZVga7gfQMiSRn8/0HZD PPcnMdKRURLL4LE6Q5YyTES7FaHHWhfDEXB9IJ+R+cM6CrUorkrt7JcTkQ8WLs6i/+VZoAfAH4J ntU9/UgO/isCw2KnwsQ== X-Authority-Analysis: v=2.4 cv=ZOPnX37b c=1 sm=1 tr=0 ts=6a953346 cx=c_pps a=EVbN6Ke/fEF3bsl7X48z0g==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=YMgV9FUhrdKAYTUUvYB2:22 a=gEfo2CItAAAA:8 a=EUspDBNiAAAA:8 a=96DL8lvnHqRkPdvoplQA:9 a=QEXdDO2ut3YA:10 a=a_PwQJl-kcHnX1M80qC6:22 a=sptkURWiP4Gy88Gu7hUp:22 X-Proofpoint-ORIG-GUID: -KOTnaxSWjIoW_uOG5nHS0eF0vNHr7-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=2026-08-31_02,2026-08-27_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 spamscore=0 malwarescore=0 lowpriorityscore=0 priorityscore=1501 adultscore=0 bulkscore=0 impostorscore=0 phishscore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608310066 On 8/28/26 10:43 AM, Krishna Chaitanya Chundru wrote: > Document the PCIe PHY found on the Qualcomm Nord platform. > > Nord has a Gen5-capable QMP PCIe PHY that can operate in multiple > lane configurations using four PHY segments (A/B/C/D). The active > topology is selected by firmware through a TCSR configuration > register and may be configured as x16, x8+x8, x8+x4+x4, or > x8+x4+x2+x2. > > The binding describes the register regions, clocks, resets, power > domains, regulators, PHY provider interface, clock provider interface, > and the qcom,link-mode property used by the driver to discover the > active lane configuration programmed by firmware. > > Signed-off-by: Krishna Chaitanya Chundru > --- > .../phy/qcom,nord-qmp-gen5x16-pcie-phy.yaml | 276 +++++++++++++++++++++ > 1 file changed, 276 insertions(+) > > diff --git a/Documentation/devicetree/bindings/phy/qcom,nord-qmp-gen5x16-pcie-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,nord-qmp-gen5x16-pcie-phy.yaml > new file mode 100644 > index 000000000000..37198f82c611 > --- /dev/null > +++ b/Documentation/devicetree/bindings/phy/qcom,nord-qmp-gen5x16-pcie-phy.yaml > @@ -0,0 +1,276 @@ > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/phy/qcom,nord-qmp-gen5x16-pcie-phy.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Qualcomm Nord QMP Bifurcated PCIe PHY Quadfurcated, perhaps? Is there a word in the spec that doesn't get too detailed about the number of effective slots that the PHY is divided into? [...] > + vdda-phy-a-supply: true > + > + vdda-phy-b-supply: true > + > + vdda-phy-c-supply: true > + > + vdda-phy-d-supply: true > + > + vdda-pll-a-supply: true > + > + vdda-pll-b-supply: true > + > + vdda-pll-c-supply: true > + > + vdda-pll-d-supply: true I'm really surprised they aren't all connected to the same pair but oh well Konrad