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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-65bad3f0b55sm1828771a12.23.2026.02.16.04.48.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 16 Feb 2026 04:48:35 -0800 (PST) Message-ID: <4fbc3ceb-ac69-4c62-8493-e216f352a64e@oss.qualcomm.com> Date: Mon, 16 Feb 2026 13:48:33 +0100 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 RFC] arm64: dts: qcom: qcs6490-rb3gen2: Enable uPD720201 and GL3590 To: Bjorn Andersson , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Manivannan Sadhasivam Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Neil Armstrong , Dmitry Baryshkov References: <20260212-rb3gen2-upd-gl3590-v1-1-18fb04bb32b0@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260212-rb3gen2-upd-gl3590-v1-1-18fb04bb32b0@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: nHsVIzTcoh_ll_SHUGjUgofejvTFFFdl X-Proofpoint-ORIG-GUID: nHsVIzTcoh_ll_SHUGjUgofejvTFFFdl X-Authority-Analysis: v=2.4 cv=Sc76t/Ru c=1 sm=1 tr=0 ts=69931225 cx=c_pps a=EVbN6Ke/fEF3bsl7X48z0g==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=HzLeVaNsDn8A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=Mpw57Om8IfrbqaoTuvik:22 a=GgsMoib0sEa3-_RKJdDe:22 a=k6EWo2rcp4jYI08GLI8A:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=a_PwQJl-kcHnX1M80qC6:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjE2MDEwOCBTYWx0ZWRfX6tJNKiUuIVsR oz2O/JqVIa27CZUfp9gZv3Z7swMKvgNllvi8OOm1ZfX9ddL9sAV2bCMYF9g7kqE+jnzzYvwXKTJ A4kkTw0u2lwnto9PxcmARJt8Aazt3OzejGgIOGkR39W45zyCuhhWyPF6rCn9Pmrx+gkUKV9EaRB yzYxnOw8fRKOn+gdXsFoFsVEO1ErLhKtZS3QCkVMn7/ONP5JjP91ygVOSfdE1oCqB0ORpbjP9nE A+Wg1IsTuu/3oGn+lpymsAyJYGP+vyw/8AMmlo9FY0AP/8pHcJbKtbTbcnnkNkDDpUMGK+5wHmE armOodjKM6/Oh3ABpQGpzgOu8HVV3VW/zJvz+SX7atxnUj6rpVG7eU38R3smv8fuCsbWjrY2QhZ I8VpXLgYqS06Y2OKkM0FdVOR7+opXl+P7ez5ifO7v5C5ADOWk9a5PKjpjE5iYIZXcykXgDAy10S MP2fix+Sh6HeZDS98mw== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-02-16_04,2026-02-16_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 adultscore=0 lowpriorityscore=0 priorityscore=1501 phishscore=0 impostorscore=0 spamscore=0 clxscore=1015 suspectscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2602160108 On 2/12/26 9:43 PM, Bjorn Andersson wrote: > The QCS6490 Rb3Gen2 has a Renesas μPD720201 XHCI controller hanging off > the TC9563 PCIe switch, on this a Genesys Logic GL3590 USB hub provides > two USB Type-A ports and an ASIX AX88179 USB 3.0 Gigabit Ethernet > interface. > > The Renesas chip is powered by two regulators controlled through PM7250B > GPIOs 1 and 4, and the power/reset pin is pulled down by PM8350C GPIO 4. > The Genesys chip power is always-on, but the reset pin is controlled > through TLMM GPIO 162. > > Describe the Renesas chip on the PCIe bus, with supplies and reset, to > allow it to be brought out of reset and discovered. Then describe the > two peers of the USB hub, with its reset GPIO, to allow this to be > brought out of reset. > > The USB Type-A connectors are not described, as they are in no regard > controlled by the operating system. Nice, for a change ;) [...] > + > + usb_hub_reset_state: usb-hub-reset-state { > + pins = "gpio162"; > + function = "gpio"; > + > + drive-strength = <2>; > + bias-disable; Straying away from the main topic, I find these newlines in the middle excessive Konrad