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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b935ac546ddsm895276666b.20.2026.03.05.03.33.59 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 05 Mar 2026 03:34:02 -0800 (PST) Message-ID: <4d4cb697-17c0-4610-b498-04a3bb252923@oss.qualcomm.com> Date: Thu, 5 Mar 2026 12:33:58 +0100 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v20 08/10] arm64: dts: qcom: lemans: Add psci reboot-modes To: Shivendra Pratap , Lorenzo Pieralisi , Arnd Bergmann , Bjorn Andersson , Sebastian Reichel , Rob Herring , Souvik Chakravarty , Krzysztof Kozlowski , Andy Yan , Matthias Brugger , Mark Rutland , Conor Dooley , Konrad Dybcio , John Stultz , Moritz Fischer , Bartosz Golaszewski , Sudeep Holla Cc: Florian Fainelli , Krzysztof Kozlowski , Dmitry Baryshkov , Mukesh Ojha , Andre Draszik , Kathiravan Thirumoorthy , linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, Srinivas Kandagatla References: <20260304-arm-psci-system_reset2-vendor-reboots-v20-0-cf7d346b8372@oss.qualcomm.com> <20260304-arm-psci-system_reset2-vendor-reboots-v20-8-cf7d346b8372@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260304-arm-psci-system_reset2-vendor-reboots-v20-8-cf7d346b8372@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=I5Johdgg c=1 sm=1 tr=0 ts=69a96a2c cx=c_pps a=oc9J++0uMp73DTRD5QyR2A==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yx91gb_oNiZeI1HMLzn7:22 a=RY4SAwMzpmrxGTDjaQ4A:9 a=QEXdDO2ut3YA:10 a=iYH6xdkBrDN1Jqds4HTS:22 X-Proofpoint-ORIG-GUID: xmiD_-YT3rXZXMZ0RlmvkRG3LxQiv8hj X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzA1MDA5MiBTYWx0ZWRfX7jOoq19NS4JM x8wfTfIRN/6BpBImoM5v/MqJTGNbE9EgD4CDHfBjFG7tTYp615gSqYkdI4olKTtIG1WsSdkxxMC LumIFUgQnYGUFMYWyhiHqRUa8Mhml2ynFNwoLgsobCOX7UJq/ViaebmXpf2mXhBdCFV76NZIOCs nB98qqsI6k4yKFCPMJ9vKvriszLEtX7TytyuE2MpqtzM+a0GMiYbJpFHbBooGH82Hpqay4uW8DH ITv/olsr/8WfBK82oV174+UmK/mbr1wHlNdgxVcDv0n/NwH2BAl7/DRxjU+0tyy1si1UAkVENVb gmQ/7vJ0LLmsKu3hq1kZxTK958UPKAUc8EO+r1netKDnmqIDfO1KFye6RYSVyFX5q/O9KnD5AbM hWij0i9y5vmvg25zPuPOlgfu2y38zm8XiY8gx8FZIOhtrkavh5TA/9Mx3K1/Aqj/d47tc2o8Jz9 QA3XhcI+99Gu70g9aqA== X-Proofpoint-GUID: xmiD_-YT3rXZXMZ0RlmvkRG3LxQiv8hj X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-05_04,2026-03-04_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 priorityscore=1501 bulkscore=0 malwarescore=0 suspectscore=0 adultscore=0 clxscore=1015 impostorscore=0 spamscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2603050092 On 3/4/26 7:03 PM, Shivendra Pratap wrote: > Add PSCI SYSTEM_RESET2 reboot-modes for lemans based boards, for use by > the psci_reboot_mode driver. > > The following modes are defined: > - bootloader: reboot into fastboot mode for fastboot flashing. > - edl: reboot into emergency download mode for image loading via > the Firehose protocol. > > Support for these modes is firmware dependent. The previous patch only enabled it on a subset of kodiak boards, the remaining ones do it globally, even though you claim it's fw dependent.. this changed in in v17 apparently My fear is that those may conflict with other methods providing identical identification names, i.e.: psci { reboot-mode { mode-bootloader = <0x80010001 0x2>; mode-edl = <0x80000000 0x1>; }; }; imem@f000 { reboot-mode { compatible = "syscon-reboot-mode"; offset = <0x65c>; mode-normal = <0x77665501>; mode-bootloader = <0x77665500>; // conflict mode-recovery = <0x77665502>; }; }; will the syscon write apply and the (unsupported) PSCI_RESET2 gracefully fall through? Konrad