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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-68310b3e6d1sm8694015a12.5.2026.05.21.02.25.55 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 21 May 2026 02:25:56 -0700 (PDT) Message-ID: <1c570243-45b2-4813-b070-9b22dfa787eb@oss.qualcomm.com> Date: Thu, 21 May 2026 11:25:54 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] arm64: dts: qcom: sc8280xp: correct usb phy power supply To: Jens Glathe , Pengyu Luo Cc: Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Xilin Wu References: <20250110092326.167575-1-mitltlatltl@gmail.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: SQYMqjiFVDZzzJsEFsqX_xdOtVAnORPT X-Proofpoint-ORIG-GUID: SQYMqjiFVDZzzJsEFsqX_xdOtVAnORPT X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTIxMDA5MiBTYWx0ZWRfX97bb8070ws3D pMDS7YB/Gt8aEDEzXd6q3XybeFZeFKrmnOLeAMQIVY/L3RhY5j+HJhPsMOr0LUmwmuzN/hhHzwb 89lpyiBc1Gcg1AIdUYn9d4VTJhQiFjYh1mOE7sehC/36hmpntS+p9d7ANJ+gpsF3ax8dzQApiuT kyV21il8KGh1YnJIxGmGhwmuN7jBDh3EMVOLoUeZE3RxW1xN2tVjBsN5y9Dwm7iVHJteYBsZFqj rajh/2AeS3AxBiApp/WPPBg74AFNVppCfyotpkPhWt9q5YZZIXRkk/WrC2QvQoypjhPLHESXyD8 +N5g+zMS4HwP9uBDGhHZ9ZbN3Lq0wJgD6d1ikyfeofiQzlQa7l+VRluQrFRyPHb7HGzRIYKpQpL vyPSqHtVIYRPcYlztjDMoFU3tBJ2ax67TtJQL3VlIQ4D0Aqz/QiNTDNx7wCbD6imGpBYiObVpce dZYES5rsyz9rlbkLbjQ== X-Authority-Analysis: v=2.4 cv=L+YtheT8 c=1 sm=1 tr=0 ts=6a0ecfa6 cx=c_pps a=HLyN3IcIa5EE8TELMZ618Q==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=NGcC8JguVDcA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=rJkE3RaqiGZ5pbrm-msn:22 a=6WkqVPdYesW7Ksm6RcgA:9 a=QEXdDO2ut3YA:10 a=bTQJ7kPSJx9SKPbeHEYW:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-05-21_01,2026-05-18_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 priorityscore=1501 malwarescore=0 bulkscore=0 lowpriorityscore=0 phishscore=0 clxscore=1015 adultscore=0 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605130000 definitions=main-2605210092 On 5/20/26 9:45 AM, Jens Glathe wrote: > On 18.05.26 14:08, Pengyu Luo wrote: >> I think they might take the power sequence into account when they were >> introducing the devices, vdda-phy(~0.9v) first and vdda-pll(1.2v) >> later in the upstream while vdd(0.912v) first and core(1.2v) later in >> the downstream. BTW, the DSDT is unreliable. On my platform, it >> describes that several components are consuming several LDOs, but >> these components work well with these LDOs manually disabled via rpmh. >> >> Best wishes, >> Pengyu >> > Hmm looks like schematics would trump these speculations. Maybe wait until this can be confirmed. My previous reply was wrong. via CRD8280X schematics: USB0 USB1 USB2 USB3 USB4 USB5 HSPHY 0p9 L9D L4B L1B L8D [L10D L10D] HSPHY 1p8 L1C L1C [L1C L1C] [L8C L8C] HSPHY 3p1 L7D L13C [L7D L7D] [L2D L2D] SSPHY 0p9 L9D L4B L1B L8D N/A N/A SSPHY 1p2 L4D L3B L4D L4D N/A N/A USB0 - usb@a600000 USB1 - usb@a800000 USB2/3 - usb@a400000 ports 0/1 USB4/5 - usb@a400000 ports 2/3 Regulators in square brackets share a single input pin on the SoC Konrad