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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-658b44527eesm2740606a12.9.2026.01.29.03.23.08 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 29 Jan 2026 03:23:10 -0800 (PST) Message-ID: <76c24508-bb75-475a-b973-d7ad18c302ce@oss.qualcomm.com> Date: Thu, 29 Jan 2026 12:23:07 +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] arm64: dts: qcom: sm8550: Update EAS properties To: Viresh Kumar Cc: webgeek1234@gmail.com, Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Viresh Kumar , Lukasz Luba , "Rafael J. Wysocki" , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Xilin Wu References: <20260128-sm8550-eas-v1-1-fb80615bed5c@gmail.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: 5JbEk3JkiSiUOmCj11of7NtVSYDDmwP5 X-Proofpoint-ORIG-GUID: 5JbEk3JkiSiUOmCj11of7NtVSYDDmwP5 X-Authority-Analysis: v=2.4 cv=dfSNHHXe c=1 sm=1 tr=0 ts=697b431f cx=c_pps a=hnmNkyzTK/kJ09Xio7VxxA==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=vUbySO9Y5rIA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=0Xt1OXwk4LvI3a-bI1MA:9 a=QEXdDO2ut3YA:10 a=PEH46H7Ffwr30OY-TuGO:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTI5MDA3NyBTYWx0ZWRfXw3ZMuP+QD10r t2YSMbEHDCqjDe922mG5wemmj577uxpi5KID7VIiNVwCmBMiNhhUtFVvU9mt+J7vRwTLToK6Y+E rB3h8I85ogoC4eSxINfxEZm+It34B347ktfL4DyFL8JYE1sTPfFfVcAC/VTpeSWeup66wAbwteN nDB9JNe8MTFcY1ARwLebTJnQizvjq0R9HbuBJ0px2xmTZpqJsIwhpOUo4yB8eiMXT1SyakztWzB xXBSaDAG+vpIwAP5VoqZ7jXigMA6cRSDVS62FFNfNQ09psv47jY4L9DJFHeeRPSIAa7qHbff/9+ bD2U7BlNjAh+J5lbj0p0sFe375xADc4lVH+yj+6QajjcyW0ojYx+kGSOnXxuyojHDy9Q3eTPPX/ 8kemNdLwju2YoUd81JkF4bkZs9rWs4DJ8aRNvEHcMRzHEV7Qs0uETIcAZl2OUUs/BiWMD7XtFsb 259MkHghxuB/uqN9KQg== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-01-29_02,2026-01-28_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 lowpriorityscore=0 phishscore=0 spamscore=0 priorityscore=1501 bulkscore=0 suspectscore=0 adultscore=0 clxscore=1015 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2601290077 On 1/29/26 12:05 PM, Viresh Kumar wrote: > On 29-01-26, 12:00, Konrad Dybcio wrote: >> On 1/28/26 8:11 PM, Aaron Kling via B4 Relay wrote: >>> It should be noted that the A715 cores seem less efficient than the >>> A710 cores. Therefore, an average value has been assigned to them, >>> considering that the A715 and A710 cores share a single cpufreq >>> domain. >> >> Regarding the CPUFreq domain shared across cores with different power >> characteristics, I think we shouldn't be lying to the OS, rather Linux >> should be able to deal with it, somehow. > > cpufreq-domain == cpufreq-policy here I guess. All CPUs that change > their DVFS state together should be part of one policy. Not sure if > there is something else you were pointing at. Yes, they change their state together. The question is whether it's okay for these CPUs to have different dynamic-power-coefficient values, and whether the EM code won't be thrown off by that. Again, they differ because within that shared policy, there's 2 separate kinds of cores (2x Cortex-A715 + 2x Cortex-A710). Konrad