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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b01902d0e99sm1546636466b.12.2025.09.05.05.26.21 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 05 Sep 2025 05:26:23 -0700 (PDT) Message-ID: <34d9ce02-5711-42ec-913a-772ee744b7e4@oss.qualcomm.com> Date: Fri, 5 Sep 2025 14:26:20 +0200 Precedence: bulk X-Mailing-List: linux-mmc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 10/14] arm64: dts: qcom: lemans-evk: Enable first USB controller in device mode To: Wasim Nazir , Ulf Hansson , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Richard Cochran , Bartosz Golaszewski Cc: kernel@oss.qualcomm.com, linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, netdev@vger.kernel.org, linux-i2c@vger.kernel.org, Krishna Kurapati References: <20250904-lemans-evk-bu-v3-0-8bbaac1f25e8@oss.qualcomm.com> <20250904-lemans-evk-bu-v3-10-8bbaac1f25e8@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20250904-lemans-evk-bu-v3-10-8bbaac1f25e8@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: Azf5ItFj8j24U7gYwid7IUxfGaaeiqTL X-Authority-Analysis: v=2.4 cv=X+ZSKHTe c=1 sm=1 tr=0 ts=68bad6f1 cx=c_pps a=WeENfcodrlLV9YRTxbY/uA==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=yJojWOMRYYMA:10 a=EUspDBNiAAAA:8 a=B3P4ua6ZyXwAq7e7NPAA:9 a=QEXdDO2ut3YA:10 a=kacYvNCVWA4VmyqE58fU:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwOTA0MDE2MyBTYWx0ZWRfX5BK2K2EdrP1b aTPGDieRrngPVbCGArUWL4dGclelXf00apwctpcI3BdlbSxLaPDCkD/NPsnObbD5sRikjKmt0Qo 8zhzwbxP3sKDtvqE396jwPTiLZhdxWqHdQs/foLE3B7NdeUMa0/Fg3I84axjrSmxQDZpSdAmH+o tFTGpE9RRNfh1ezXyPhyN/wmlTF8yW4Mf0H3ZrkaJ2JznTzdf76C2esVKcdbqQxnDKRkRj0tQRW TRZlt7byaUZQSBkA1lkDvOG6yjlJTFH06+7BlQ6ZDg+dSqzjoBKyjMulhvhlhpas/uQ1tD+2igh RlIfJZb1TPdn7La6p1ZKRA2uWmudIt2IP7OhttwJ9AvCskWL41toWlFi3aAK6N5dBpfd6Lz9i+e ZO/coh3F X-Proofpoint-ORIG-GUID: Azf5ItFj8j24U7gYwid7IUxfGaaeiqTL X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1117,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-09-05_03,2025-09-04_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 bulkscore=0 clxscore=1015 impostorscore=0 phishscore=0 malwarescore=0 adultscore=0 priorityscore=1501 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2509040163 On 9/4/25 6:39 PM, Wasim Nazir wrote: > From: Krishna Kurapati > > Enable the first USB controller in device mode on the Lemans EVK > board and configure the associated LDO regulators to power > the PHYs accordingly. > > The USB port is a Type-C port controlled by HD3SS3320 port controller. > The role switch notifications would need to be routed to glue driver by > adding an appropriate usb-c-connector node in DT. However in the design, > the vbus supply that is to be provided to connected peripherals when > port is configured as an DFP, is controlled by a GPIO. > > There is also one ID line going from Port controller chip to GPIO-50 of > the SoC. As per the datasheet of HD3SS3320: > > "Upon detecting a UFP device, HD3SS3220 will keep ID pin high if VBUS is > not at VSafe0V. Once VBUS is at VSafe0V, the HD3SS3220 will assert ID > pin low. This is done to enforce Type-C requirement that VBUS must be > at VSafe0V before re-enabling VBUS." > > The current HD3SS3220 driver doesn't have this functionality present. So, > putting the first USB controller in device mode for now. Once the vbus > control based on ID pin is implemented in hd3ss3220.c, the > usb-c-connector will be implemented and dr mode would be made OTG. Hopefully that's somewhere on our todo list Reviewed-by: Konrad Dybcio Konrad