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Wysocki" , Bjorn Andersson , Konrad Dybcio , Abel Vesa , Daniel Lezcano Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-arm-msm@vger.kernel.org References: <20261005-s2idle_state-v1-0-3c402c66f388@oss.qualcomm.com> <20261005-s2idle_state-v1-3-3c402c66f388@oss.qualcomm.com> <0afbd549-3e9c-4b06-928d-34b2912754be@oss.qualcomm.com> <406a393d-56ec-4143-bdea-2d46c5a4d1bb@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <406a393d-56ec-4143-bdea-2d46c5a4d1bb@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDE2MDA0OCBTYWx0ZWRfX/E+CUbFi6Du0 lka9i+Fk4fFXVvPp4BUKn1fHiSEr/EpV+QV42iglBt1jesG7tR9nb93GD+5FYadmFFE2/t6cuRQ wix0QllVak7OC8Cipk3kniTlW5QhPYRICM7SUKid6EUE9IVzj7NQYmlNAWl4XSbGqhkRPnm4om3 JtzcVfEj+OFHyaIBZHwW8+guS88lOK7EFS31+ywMguFGAjQRuQeBwng3fImBVmz2/m+m9OplNv+ /8V7c+ouZY81qEsRoppSAMLTcZ/GtDxmKiLzENYqeuZcyHn94Hmfci+pEKFwjMdddJyF/+89TPo pML5Ak7losOSVKfIHX0yEdOaykmDNDoPz+fAlbZCpyCwaCq7vkaZpQTOZlHThYhTLcMav7PAJK0 MZFlOyVH9Z/erigoy3jW/5BFdEqNV84LXriaWr1USWHfD7f7YAemQfF3BI4IV/BQMQgn+ESI40z tqyflUAcRuAK1ScwSJg== X-Proofpoint-Spam-Info: AW1haW4tMjYxMDE2MDA0OCBTYWx0ZWRfX8Yv4fhJr4NnU gBJmC1EKMjSAn5B+zQpVp1olzhOE8OrslAjbHArUJlrHeVejHkVU4ptB0a2QPZSVm3mthv/VHN4 /TjlEQeUKpEdnJLUjNqIKjft1crQjpM= X-Authority-Analysis: v=2.4 cv=PqsG/AM3 c=1 sm=1 tr=0 ts=6ad21571 cx=c_pps a=hnmNkyzTK/kJ09Xio7VxxA==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yx91gb_oNiZeI1HMLzn7:22 a=EUspDBNiAAAA:8 a=c69CFNmdBQlqmWoHYt4A:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=PEH46H7Ffwr30OY-TuGO:22 X-Proofpoint-ORIG-GUID: oQOY405-3SBHB5pzduNHkGo20YHz2AGR X-Proofpoint-GUID: oQOY405-3SBHB5pzduNHkGo20YHz2AGR 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=2026-10-16_01,2026-10-14_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 bulkscore=0 priorityscore=1501 lowpriorityscore=0 impostorscore=0 phishscore=0 clxscore=1015 malwarescore=0 suspectscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610080000 definitions=main-2610160048 On 10/14/26 8:15 AM, Maulik Shah wrote: > > > On 13-10-2026 14:38, Konrad Dybcio wrote: >> On 10/5/26 5:29 PM, Maulik Shah wrote: >>> To achieve SoC low power mode like chip rail power collapse (CxPC), >>> the Monaco EVK board with four PMICs requires coordinated power-down of >>> CPUSS and the Safety Island (SAIL) subsystem. This deepest system power >>> collapse state is reserved for system-wide suspend (s2idle). >>> >>> Add the system_suspend domain idle state, mark it with system-state, >>> and reference it from the system power domain. >>> >>> Assisted-by: Codex:GPT-6 >>> Signed-off-by: Maulik Shah >>> --- >>> arch/arm64/boot/dts/qcom/monaco-evk.dts | 17 +++++++++++++++++ >>> 1 file changed, 17 insertions(+) >>> >>> diff --git a/arch/arm64/boot/dts/qcom/monaco-evk.dts b/arch/arm64/boot/dts/qcom/monaco-evk.dts >>> index 539c9c80a808..b2978be6823d 100644 >>> --- a/arch/arm64/boot/dts/qcom/monaco-evk.dts >>> +++ b/arch/arm64/boot/dts/qcom/monaco-evk.dts >> Why is this board-specific? > The deepest state is only supported on the Monaco EVK board with four PMICs. The monaco-ac-evk.dts is with two PMICs and do not support the power down of SAIL. Nothing in the commit message explains that. In any case, this should not be specific to the EVK, but rather we should probably have a monaco-ac.dtsi holding these differences Konrad