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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> Content-Language: en-US From: Maulik Shah In-Reply-To: <0afbd549-3e9c-4b06-928d-34b2912754be@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDE0MDAyNCBTYWx0ZWRfX/uhYP0sd//jI skbqnrUboSQkOIGJNNy7gQ/x+x6pZx7CW90wtlh4Q5DQrpKMRIx9hk37f3Ehz8DbZ6VbJqVsWoA eHp0Y8w3gV3y32KGbv5ekwGWuW5WkT6cpaSzsmchsRfnX1l2dSfYc0HdOc8x9L20oIjXPE5YqYY Mj91OZnF9/Ih8fKjypiyFxKGWvKMCb+usc8x7L7+GZLtvt8RvwKHRkC/BNTfGCCahQG4QcBsMGD zOHdmFZ4g/JxF8mKlj+VW8tC9H/4dHv0QJzvZ4CtHydo7wqImbd+2Cf4HzAMfK4YBStOkgg7pHN WpRHK1T4Q30XlsXuPWSTaZKEnixPcvR8CHispsOBHHLLP9KRE+04PNkEzn3QkklyLplLzoOtdLy nvKb82/uWa1uGHjbziPDxPxJPY8QcnkAuzOHwmd2gMc/KKkS2SaY/ufCaUaVzHkdKI+HQe4ansi bP1PjqU5BH1VJF1CwjA== X-Proofpoint-GUID: EiNCup7-7cW85_TQO9vI1rMk40oOGauu X-Authority-Analysis: v=2.4 cv=P6avFSAu c=1 sm=1 tr=0 ts=6acf1e10 cx=c_pps a=Uww141gWH0fZj/3QKPojxA==:117 a=84Ru73zTo6JNcb5XwS6KEA==: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=AO_i1zjuEiQEncmG7N4A:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=PxkB5W3o20Ba91AHUih5:22 X-Proofpoint-ORIG-GUID: EiNCup7-7cW85_TQO9vI1rMk40oOGauu X-Proofpoint-Spam-Info: AW1haW4tMjYxMDE0MDAyNCBTYWx0ZWRfX9VEZhcycxXMw Nq6sDpVVBYc7LZ+oIAPzQ+mvh8NtfkocCyde8XAMVZrIlFXZZ5IhsbZHQArjpFzq/yzJE6OxaZL MC631Nv9ZDU//WjZlvDyBfdinbtOw9o= 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=2026-10-13_01,2026-10-09_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 bulkscore=0 lowpriorityscore=0 priorityscore=1501 adultscore=0 suspectscore=0 clxscore=1015 impostorscore=0 malwarescore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610080000 definitions=main-2610140024 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. > >> @@ -80,6 +80,19 @@ m2_e_uart_ep: endpoint@0 { >> }; >> }; >> >> + cpus { >> + domain-idle-states { >> + system_suspend: domain-suspend { >> + compatible = "domain-idle-state"; >> + arm,psci-suspend-param = <0x4200C344>; > Please keep the hex numbers lowercase Ack, will update in v2. Thanks, Maulik