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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b353f772528sm139148366b.37.2025.09.25.03.25.15 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 25 Sep 2025 03:25:16 -0700 (PDT) Message-ID: <2055e6a8-dace-4ee9-a74b-0e3bf2d58fb7@oss.qualcomm.com> Date: Thu, 25 Sep 2025 12:25:14 +0200 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 05/24] arm64: dts: qcom: glymur: Add cpu idle states To: Pankaj Patil , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Maulik Shah References: <20250925-v3_glymur_introduction-v1-0-24b601bbecc0@oss.qualcomm.com> <20250925-v3_glymur_introduction-v1-5-24b601bbecc0@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20250925-v3_glymur_introduction-v1-5-24b601bbecc0@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: ojlx0McvKeX4MdgD3nqbCOlAe4JE9gve X-Authority-Analysis: v=2.4 cv=fY2ty1QF c=1 sm=1 tr=0 ts=68d5188e cx=c_pps a=50t2pK5VMbmlHzFWWp8p/g==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=yJojWOMRYYMA:10 a=EUspDBNiAAAA:8 a=IJKnKGbGdoixpOcUAUoA:9 a=QEXdDO2ut3YA:10 a=IoWCM6iH3mJn3m4BftBB:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwOTIyMDE2OCBTYWx0ZWRfX2ycOZc+XuxkM yy/6YwTz7zEBpHAmZEf7a79K2k59KfjXSSh26NCuQtoMzfxah1J1fhaDmYbXrakRsdZZaVR3Xg3 JUvHiOcV0YQuWJZVPhd4WVysMAzo0aqjXSVNBscJQRwN+y+AkyRAXW+hP1mgcRg6CuVrZSMyt6o FQOIliIjC9BuEJjYRDWQbqDqi42BbcIvZ/VKthVFU8szrISf0K8fP+eASqxQYyYozfNkG3kTZhT 8GQveULhHSNAVKaVbOwMmnKvfq8kWXNsOfuWPIX9QwNYhK2BtQpwiSjSeARqKi2KC/CxxAi2sz4 QV4IarCgjLHDMfQ+WftjIZsijclJ517k7+OvoE9/x74LqcyMdjtXG3Tzyx9r+OA6qaZEK4RI1cI mbpowb2q X-Proofpoint-ORIG-GUID: ojlx0McvKeX4MdgD3nqbCOlAe4JE9gve X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1117,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-09-24_07,2025-09-24_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 malwarescore=0 spamscore=0 adultscore=0 impostorscore=0 phishscore=0 bulkscore=0 priorityscore=1501 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2509220168 On 9/25/25 8:32 AM, Pankaj Patil wrote: > From: Maulik Shah > > Add CPU power domains The commit message could say something about what kind of states are being added, what their impact on the running system is, etc.. [...] > + idle-states { > + entry-method = "psci"; > + > + CLUSTER0_C4: cpu-sleep-0 { > + compatible = "arm,idle-state"; > + idle-state-name = "ret"; > + arm,psci-suspend-param = <0x00000004>; > + entry-latency-us = <180>; > + exit-latency-us = <320>; > + min-residency-us = <1000>; > + }; > + > + CLUSTER1_C4: cpu-sleep-1 { > + compatible = "arm,idle-state"; > + idle-state-name = "ret"; > + arm,psci-suspend-param = <0x00000004>; > + entry-latency-us = <180>; > + exit-latency-us = <320>; > + min-residency-us = <1000>; > + }; > + > + CLUSTER2_C4: cpu-sleep-2 { > + compatible = "arm,idle-state"; > + idle-state-name = "ret"; > + arm,psci-suspend-param = <0x00000004>; > + entry-latency-us = <180>; > + exit-latency-us = <320>; > + min-residency-us = <1000>; > + }; All three are identical (should they be?), just call it CPU_C4 and de- duplicate it (unless the framework would read that as "all CPUs in the system must sleep at the same time" which I don't know if it would) > + > + cluster0_cl5: cluster-sleep-0 { > + compatible = "domain-idle-state"; > + idle-state-name = "ret"; > + arm,psci-suspend-param = <0x01000054>; > + entry-latency-us = <2000>; > + exit-latency-us = <2000>; > + min-residency-us = <9000>; > + }; > + > + cluster1_cl5: cluster-sleep-1 { > + compatible = "domain-idle-state"; > + idle-state-name = "ret"; > + arm,psci-suspend-param = <0x01000054>; > + entry-latency-us = <2000>; > + exit-latency-us = <2000>; > + min-residency-us = <9000>; > + }; > + > + cluster2_cl5: cluster-sleep-2 { > + compatible = "domain-idle-state"; > + idle-state-name = "ret"; > + arm,psci-suspend-param = <0x01000054>; > + entry-latency-us = <2000>; > + exit-latency-us = <2000>; > + min-residency-us = <9000>; > + }; ditto > + > + APSS_OFF: cluster-ss3 { labels must be lowercase > + compatible = "domain-idle-state"; > + idle-state-name = "apps-pc"; > + entry-latency-us = <2800>; > + exit-latency-us = <4400>; > + min-residency-us = <10150>; > + arm,psci-suspend-param = <0x0200C354>; lowercase hex, please also, this node oddly puts arm,psci-suspend-param at a different place, please align it with the prvious ones [...] > + CLUSTER3_PD: power-domain-cpu-cluster3 { "SYSTEM_PD"? > + #power-domain-cells = <0>; > + domain-idle-states = <&APSS_OFF>; Does it make sense to include some shallower idle states? Konrad