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Mon, 03 Aug 2026 03:33:06 -0700 (PDT) X-Received: by 2002:a05:6a21:648b:b0:3c3:9595:57ef with SMTP id adf61e73a8af0-3c92a5bc4f9mr9402262637.31.1785753186241; Mon, 03 Aug 2026 03:33:06 -0700 (PDT) Received: from [10.218.15.172] ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-13fab4e44bcsm43148007c88.12.2026.08.03.03.33.02 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 03 Aug 2026 03:33:05 -0700 (PDT) Message-ID: Date: Mon, 3 Aug 2026 16:03:00 +0530 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 7/7] arm64: dts: qcom: shikra: Add CPU idle states To: Konrad Dybcio , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Thomas Gleixner , Shawn Guo , Marc Zyngier Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260713-b4-shikra_lpm_addition-v1-0-3d858df2cbbf@oss.qualcomm.com> <20260713-b4-shikra_lpm_addition-v1-7-3d858df2cbbf@oss.qualcomm.com> <5756164d-2e42-4eb1-ab18-69c6f784b789@oss.qualcomm.com> Content-Language: en-US From: Sneh Mankad In-Reply-To: <5756164d-2e42-4eb1-ab18-69c6f784b789@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: nyQM8WvBtMSy8QmK_CVKU7ipeYSIVni4 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODAzMDA5NCBTYWx0ZWRfX4q45Xdid+GzO zCWxbjL6/bzV9NsN0W3BWukIafq9oehKcl2Dt/WF9fMC2/LGNKLnFiOl9pefNFTuv4wXikPnpeQ 0EMGsD7Ld5iypQVMD7ozofIwioc8o4GWE8rFbuvC1hIuicq18pAKjrgsFATz/DxmqbDT2JtNbEA +YevSKlPxaKq4raIh2+sJeyByyIJ16zvFwdfSYRf2nAJGAX+FtJgKRXyQLm7b01wUqxk2S+mDNs BPlKLxgcOx2kHGdz57uBKV6DTV2JtmufqPo18St7IwS1Tih7LKaL37Kg/BOBukqn1uyxnu+da9k NPWp91F+XXMEZdt0vxOe2ePeNsd7+p8GV7kjS47e4Tbv37jJHtUY7BRO/zg+d3BBWB8V07FGGEk wawFMvk41n7rrdOhnkQulMbQDwUhpg//ajBUFRMjVCczAXXBLw2CHauJignCriFqebkD6/Cn2sv n/FpHRcTRwL2tyPICaw== X-Proofpoint-ORIG-GUID: nyQM8WvBtMSy8QmK_CVKU7ipeYSIVni4 X-Proofpoint-Spam-Info: AW1haW4tMjYwODAzMDA5NCBTYWx0ZWRfX3HeVgo8rd2Oo VO7Ws0vpNp2iBP2yY2I50uQDtz71Uy9zdUohcQUegF15zY/Brw3WVaPgkxWzy30f6L2wX9dqwi6 O9dNruyJ9CrdOpOSuKebbxCMfQSPGfA= X-Authority-Analysis: v=2.4 cv=UIjt2ify c=1 sm=1 tr=0 ts=6a706e63 cx=c_pps a=rz3CxIlbcmazkYymdCej/Q==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=rJkE3RaqiGZ5pbrm-msn:22 a=EUspDBNiAAAA:8 a=eFh9wa1xyOHWc3L4cLUA:9 a=QEXdDO2ut3YA:10 a=bFCP_H2QrGi7Okbo017w:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-02_06,2026-07-30_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 clxscore=1015 priorityscore=1501 lowpriorityscore=0 impostorscore=0 bulkscore=0 adultscore=0 spamscore=0 suspectscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608030094 On 15-Jul-26 3:32 PM, Konrad Dybcio wrote: > On 7/13/26 12:25 PM, Sneh Mankad wrote: >> Add idle states for the CPUs as well as the whole cluster. This enables >> deeper-than-WFI cpuidle. >> >> Add MPM under cluster_pd power domain. >> >> Signed-off-by: Sneh Mankad >> --- > > [...] > >> + domain_idle_states: domain-idle-states { >> + cluster_sleep_apss_off: cluster-sleep-0 { >> + compatible = "domain-idle-state"; >> + idle-state-name = "cluster-power-down"; >> + arm,psci-suspend-param = <0x41000044>; >> + entry-latency-us = <2752>; >> + exit-latency-us = <3038>; >> + min-residency-us = <6118>; >> + }; >> + }; > > Is this really the deepest state available on Shikra? Yes, this is the deepest idle state for Shikra. It does involve handshaking with RPM to allow SoC level idle states to enter. Thanks, Sneh`