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Tue, 18 Aug 2026 03:49:40 -0700 (PDT) X-Received: by 2002:a05:620a:460a:b0:931:4c8:d8ca with SMTP id af79cd13be357-936d233ff1bmr2362201585a.1.1787050180534; Tue, 18 Aug 2026 03:49:40 -0700 (PDT) Received: from [192.168.120.193] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c2185b732a4sm136255866b.30.2026.08.18.03.49.38 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 18 Aug 2026 03:49:39 -0700 (PDT) Message-ID: <049be278-8958-4d04-8501-7fb60d2169cc@oss.qualcomm.com> Date: Tue, 18 Aug 2026 12:49:37 +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 v2] arm64: dts: qcom: hamoa-iot-evk: switch typec0 to PS8830 retimer To: Xin Liu , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, tingwei.zhang@oss.qualcomm.com, jie.gan@oss.qualcomm.com, Guodong Xu References: <20260803132753.994619-1-xin.liu@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260803132753.994619-1-xin.liu@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: OrhIhPf84kP1skIAPYPtMtkC3DuYQvyO X-Authority-Analysis: v=2.4 cv=Gs5yPE1C c=1 sm=1 tr=0 ts=6a8438c5 cx=c_pps a=qKBjSQ1v91RyAK45QCPf5w==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=Um2Pa8k9VHT-vaBCBUpS:22 a=0xWNcfA51jHuHAl5ng4A:9 a=QEXdDO2ut3YA:10 a=NFOGd7dJGGMPyQGDc5-O:22 X-Proofpoint-GUID: OrhIhPf84kP1skIAPYPtMtkC3DuYQvyO X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODE4MDA3OSBTYWx0ZWRfXxqEnUw6Y1Mkc QelTpFheD7tS+MLBAXHLrre5QXT0p8CZT+3XriEiWLGH1HIxUjILPF7rGFti26B0ZmEjOe7H/ms 2hhHdEZWqOWEg82uPpMY7qVdKGqGD5j7m+HLpo20cqnvZKiUp3ymgD7DGcptuG+qUN9D/u4hFyt Jipkzqj1Ukpc4pO3qKG0whtzqAxGUu5tz90Zae4UDuSgDmxjZQW/BAdEarQ8+PU/5ub2gKoHom3 hqB5UUJZ+W97wuOt9apkT+wFSOl3nvBfn1dUUcZ2GkOm5UR/PECjOG7Dsr5X4QjxBFGp/7aUcin K0C7fwg7D/YCXh9kF4r0VpqK+44phfF9oKf5Z20AyGIj15afetZ864MnP3LORte9WFKqxx36A8z iUpszY/xx5YRYoa6ydZH/lR/EUsES5JLXobwOJAimHlBHaIQ9FJsONwK73vLRjvMhahuNHQqBM7 EtEy+PyOnaKfSTwjliw== X-Proofpoint-Spam-Info: AW1haW4tMjYwODE4MDA3OSBTYWx0ZWRfXy8XSETILzWTZ fLkvDZCP34p8XRS8yQqfPN6v7DYswk2n4KD6KqUHx9loyauNLpBBrOytXB8WRogPljL0xEVMeRz 31hdpzrvIMijd84Fix32uW28z+vvqGQ= 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=2026-08-18_01,2026-08-12_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 bulkscore=0 priorityscore=1501 clxscore=1015 suspectscore=0 phishscore=0 adultscore=0 impostorscore=0 spamscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608180079 On 8/3/26 3:27 PM, Xin Liu wrote: > The Hamoa IoT EVK hardware design uses a Parade PS8830 retimer on > I2C3 for USB Type-C port 0. Describe the retimer and route typec0 > through it to enable USB 3.0 SuperSpeed and DisplayPort Alt Mode. > > Supply the PS8830 from the existing vreg_rtmr0_* rails and remove > their stale "Left unused" annotation. > > The FSUSB42 SBU mux chip is present on the PCB but with all signal > lines unconnected (NC), so remove the fsusb42 node and its pinctrl > group. [...] > +&i2c3 { > + clock-frequency = <400000>; > + status = "okay"; > + > + typec-mux@8 { > + compatible = "parade,ps8830"; > + reg = <0x08>; > + > + clocks = <&rpmhcc RPMH_RF_CLK4>; On other boards, the port0 retimer normally takes RF_CLK3 - have you verified this bit? Konrad