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[103.229.16.4]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-84edbd35a76sm3148890b3a.6.2026.08.02.23.03.43 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 02 Aug 2026 23:03:46 -0700 (PDT) Message-ID: <1af31cdd-2e06-4373-887b-0ecc72d34d21@oss.qualcomm.com> Date: Mon, 3 Aug 2026 14:03:41 +0800 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: hamoa-iot-evk: switch typec0 to PS8830 retimer To: Konrad Dybcio , 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 , Milosz Wasilewski References: <20260721074145.1534100-1-xin.liu@oss.qualcomm.com> <70349e4e-12d4-4cc4-91dd-9e5d45d3427b@oss.qualcomm.com> From: Xin Liu In-Reply-To: <70349e4e-12d4-4cc4-91dd-9e5d45d3427b@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Proofpoint-Spam-Info: AW1haW4tMjYwODAzMDA1MSBTYWx0ZWRfX/oAqyzcVyzZd ZikqxgbBmE8JGzqAPDI/JXNRIIahDZXTUJcEBMiWkvkRqQrlCN1NqA29JhAGKMyy3XEy+ccY81R TXM5Zhkl2EEIqlM5Xha6CY1mUV5o5X4= X-Proofpoint-GUID: v4-urCL1rolpCbZKD46__Nr2TdxVJ5o5 X-Proofpoint-ORIG-GUID: v4-urCL1rolpCbZKD46__Nr2TdxVJ5o5 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODAzMDA1MSBTYWx0ZWRfX1QokqVVY3VIF ZcKoCvLQz+S6xIs835bHAZt3Vhju1u0fJS+rwLobTMVpza/GaImXe+fhzC2VodH+SD2fsPcUhJT dNi07tYoISIVFXUHsiv5DMm+jIsTLNKEw/obHlB3Q+Xfc1gGwlB/f5LcHe056MoWvptiouAxcfj 5kxa9UVlgWXVNdL9UdITBRl2mBZfQupdeHkOIjFZjWcU1y5F51vDyUxQm64to3LPThgzK0OYirB 8U9MlffYNiB6s/cs8RhJlcYMs6lWsyMmcO7f97i7ZyZHD/SlMbeeQM278ftP/sgJVv09xjQa/tK cRjAj9EsXDZ3Ks1mHHqv3qIK/Cl4TCoX1/eDAG2TPIGXtYmj+nXHFeuE2dep0soVvJPT3NO4JOC e7HONoOdk9ofgIZOy8K7Ux8goWKq/Wi6a7fVxIvzQxI7wzOzDpjmb9200G2r5eTHpwnncRXiq4E MI1f/6iy78g19274L5Q== X-Authority-Analysis: v=2.4 cv=Q5ziJY2a c=1 sm=1 tr=0 ts=6a702f44 cx=c_pps a=Qgeoaf8Lrialg5Z894R3/Q==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=rJkE3RaqiGZ5pbrm-msn:22 a=iJ78zIDNj9ZIkR6p9HIA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=x9snwWr2DeNwDh03kgHS:22 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=2026-08-02_06,2026-07-30_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 spamscore=0 clxscore=1015 impostorscore=0 priorityscore=1501 suspectscore=0 adultscore=0 bulkscore=0 malwarescore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608030051 On 7/21/2026 10:28 PM, Konrad Dybcio wrote: > On 7/21/26 9:41 AM, Xin Liu wrote: >> The Hamoa IoT EVK populates a Parade PS8830 retimer on I2C3 for the >> TypeC 0 port to support USB3.0 and SBU muxing. Describe the PS8830 and >> route typec0 through it. >> >> The vreg_rtmr0_* rails provisioned for a retimer were already defined >> but previously wired to nowhere. They are now consumed by the PS8830, >> so drop the "Left unused" comment. >> >> The FSUSB42 SBU mux chip won't be populated on the final EVK >> board, so remove the fsusb42 node and its pinctrl group. > Are we sure about that? I inquired about this on a pre-release > version of an equivalent patch and never got an answer. For sure > there are a number of boards without a retimer, including in our CI > (+CC Miłosz).. > > Konrad Hi, Konrad FSUSB42 is still present on the board but with all signal lines unconnected. It has also been confirmed that all CI test machines are using PS8833, not FSUSB42. Xin