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Mon, 14 Sep 2026 04:08:13 -0700 (PDT) X-Received: by 2002:a05:620a:6018:b0:939:47f4:935a with SMTP id af79cd13be357-93a29c955b9mr206569085a.5.1789384093412; Mon, 14 Sep 2026 04:08:13 -0700 (PDT) Received: from [192.168.202.12] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c296608ef30sm415014166b.42.2026.09.14.04.08.11 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 14 Sep 2026 04:08:12 -0700 (PDT) Message-ID: <9e81308c-6d9c-451d-94a6-c4d860a8cfa0@oss.qualcomm.com> Date: Mon, 14 Sep 2026 13:08:10 +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 v3 3/3] 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: Dmitry Baryshkov , 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@oss.qualcomm.com References: <20260914101233.981643-1-xin.liu@oss.qualcomm.com> <20260914101233.981643-4-xin.liu@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260914101233.981643-4-xin.liu@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: GBxE9eY4lNdlFCkPts8HEti91o7SQmyh X-Proofpoint-Spam-Info: AW1haW4tMjYwOTE0MDE1NyBTYWx0ZWRfX5e+D5a0EKRrz ZIgA8LQgeQFXMs/vOO16RmcjVzbOuH7H0F9Epg0ylOhmG9zvr6b8WyBkDRYvTtJ4bmE9dIPhjHe HHKWdbhPsuSi4dw2KRE/sJkGzKkLDCM= X-Proofpoint-GUID: GBxE9eY4lNdlFCkPts8HEti91o7SQmyh X-Authority-Analysis: v=2.4 cv=ftpJ914f c=1 sm=1 tr=0 ts=6aa7d59e cx=c_pps a=50t2pK5VMbmlHzFWWp8p/g==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=3WHJM1ZQz_JShphwDgj5:22 a=EUspDBNiAAAA:8 a=1vdBnAqgM-xrE5tMc9oA:9 a=QEXdDO2ut3YA:10 a=IoWCM6iH3mJn3m4BftBB:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTE0MDE1NyBTYWx0ZWRfX/2/nCeNnmZEd Hoah8Gs6KGq2RTF8x+Y4jEotSn7jAyo31rTdzzDcTOtAYnipyEKdn23xYYOwJCDB5t8uCWGNWdv dX4xsHdcobl7EfTlDKDW+NZ8HarnWiPrBiGjD31Sbfq77Fp8Wg5ffE8a/bVPI5I5RJvOOpavYwA fGzMIIOxFlmXkSEpzOQyLkf+Jul9PtrLdPD3mZPl1MJrE5I2uQYAZ4py8q+lopEBrh0xee6SE9H eFzs3H+68nxEW6XWe2Nej11QTOwE6Dpahx3rIxDneskW64TrlecZVe6ALO3rM4YMbnDNIMu/I0e qbjCh1NocnVBRewhJZ+Q0bDsM3MNmCW16VrOtvg/v25pT8L1c1bqRZvxeJ2cR/ZREOVk1XSGJaJ zcXA9sMEgbY1MFO+7+P7n6DTB1r1wW4HdS2Zux9glLfEqcBeALdWByddSRahLC+T3EsrLLiN8Ft sbiNMdlaKRzs+Vz8UWA== 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=2026-09-14_03,2026-09-13_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 clxscore=1015 phishscore=0 adultscore=0 impostorscore=0 priorityscore=1501 malwarescore=0 spamscore=0 suspectscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609140157 On 9/14/26 12:12 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. The chip is retained as a hardware fallback: should the PS8830's > SBU path encounter issues, the FSUSB42 can be activated with a simple > rework, avoiding a full board respin. > > Co-developed-by: Guodong Xu > Signed-off-by: Guodong Xu > Signed-off-by: Xin Liu > Reviewed-by: Dmitry Baryshkov > --- [...] > +&i2c3 { > + clock-frequency = <400000>; > + status = "okay"; In case you need to resend, please add a \n before 'status' Reviewed-by: Konrad Dybcio Konrad