From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E4BB33346AC for ; Thu, 18 Dec 2025 12:54:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766062476; cv=none; b=RKwPRYY6tm4Am2R0q1TQefUJbl3LLB8Q9bSuE2s1Ryy5j8Tem34D4zkWw0E+pEuyseiKLH89OQMBhmo2N4obh9M2Plpt2CNpuXM4KnDL/Fd5zDf1Uww+BG7Tev44/8aKJOsa1Ml5bLs1zXgIj3bi8Iuy5rmS7DDPlKm2SBaMTxQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766062476; c=relaxed/simple; bh=S8D+P06PB7aRecFLdpg3DssFWrb1K6ZioPew3WOjjco=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=f0d1e5WQdh3wlH2VIMYi6CyQTFrTGoKpjRy1VNXx972qEeK2CvD4ioUaJ5X8QapwHujQQg4JJNKN5MK9/ezorzXht6zYszYPTrkVYWWWpzr8zYRww1JXImzGi8dnutN7lIm0dsDmEk1qlz+UCNtWcTmEZUBwo9qMacFoNePxbNo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com; spf=pass smtp.mailfrom=oss.qualcomm.com; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b=jlfkf5OF; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=BcFj0Unz; arc=none smtp.client-ip=205.220.180.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b="jlfkf5OF"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="BcFj0Unz" Received: from pps.filterd (m0279870.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 5BI8ZR5m529210 for ; Thu, 18 Dec 2025 12:54:33 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= vX5prLkY5BGuM+9/a1o7xlpGpF9PMMfKIXmz9Il6pQg=; b=jlfkf5OFHqrOw/Fn aEdsdPqzNCkYP22n2aacZmmVjRTbk7Iph3rHZy4RdqAEprqeo5AW3SCwjFMeBVVi ZG8Y3xrp84TeNHR9dTNUuGr63Qga3i4qqVjcHLHjtv2vY9ibgKWFUJbHnj40KOUy H10PCwjspBsIjb++sYpiAV8RjCQPCqbuGfv0zArN/nc1PeU6w202D0XTksllLW4K INPuz1cH5qGP15ARFbjPG7TSJa+tg0+zTZ1zZ16YShkQ8H70sY3VMGTqcMbTTvp1 8iRhbvyEERhzEFOng4NRH3IrlmRn9NOksohHYj847+MiB/MZt3HMxlE9NRX/QzKv srSMZQ== Received: from mail-qk1-f200.google.com (mail-qk1-f200.google.com [209.85.222.200]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4b43mb2mym-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Thu, 18 Dec 2025 12:54:33 +0000 (GMT) Received: by mail-qk1-f200.google.com with SMTP id af79cd13be357-8adc67e5340so15749685a.2 for ; Thu, 18 Dec 2025 04:54:33 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1766062473; x=1766667273; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=vX5prLkY5BGuM+9/a1o7xlpGpF9PMMfKIXmz9Il6pQg=; b=BcFj0UnznYJ1TpZhfN1U4GoWmudkrkGVV265uj8I6ttqa+FmD7X2vPeV+h+sncPqXA Wt3Q9kmGvXPWE8sizDOr0gNmunqS63boAcBY0MKR6JhYcBV1iXDSsg0A6QpwKgeLWC73 tRMDt3On+VOb3qhfddYszYgM1qADiY0KJSwfdVTnSgQBp0a6tEGflmnGWnPAoQBju177 csSoEiRwFgX04QTFoJRKk+RwyeJ01905Oe81pk4lTkHNo9l4NzD5/705BbUVLXWFrsk/ cS7mFyPiSgrVIp19uYCA+m/wdZoRd325haSEVCV3T4T1AZASlFTknT3Cgh5b+QSeL1j9 H+Zg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1766062473; x=1766667273; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-gg:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=vX5prLkY5BGuM+9/a1o7xlpGpF9PMMfKIXmz9Il6pQg=; b=Sc4V9eTvOTYKnkH6gNGFLU99EMylgktd6/ESNP4QDUSPf3GZjkmq8p1qntm0kYMSK8 j5qyVUAIse8QiqeNtMyP7Yz/H85RWo48T4s87c3bhp4vaznt6wgj2k9cr67Z2GjgWhUj vh3M466m6FWvx2l+tyjWS1Rx+xT9D+IXEPtSGh4sbFkwOmBdnZP1/w9ZtXL6HUGU1uxp K60EJ21kKbgWXpr76sEZGZNRVAtPY9S/jeCi8Z9ydLyNeWDjS8P1J9+N8vHuuawARXnQ Y2RX/j8ZRC9DGOyrOHqT5QVj3V4ZP+b6MqkKhdZMrXLMcS2R5oZd7dw0g2Sw9bavd0lp rtaA== X-Forwarded-Encrypted: i=1; AJvYcCVgbAnzVUwjTrWqa8Wk4KUJrAvKW3VKe0vcueg+ceRdOBFKskcbn2eKzoe6eZN7PkZvqbf7Qo9EODVWhEo=@vger.kernel.org X-Gm-Message-State: AOJu0YwLi8yr1l8ZAn2Dw3HPEuCVgB3tP1NL4yLAI+9OaDbC3hvjyAHk m9SN2t36Jm7ftKfwlgLBUFL+DuhYHqut5fbCapsx+zsmyR4Rxg4SfeVN/2tuEScMQoIz5QtVDvV TCYjyMvndC2t3a9pkyUmEf5X6nqCGUq7tY0i1I9y2tFbF9dN9pFBL7937X5DSwXtROAI= X-Gm-Gg: AY/fxX5UnPOLR5CY08oQvjFoTQDj2B2zJTuZdu8th7IyTw/IqYZbxXFwbF3Y9ELel7D mkicZA/iPFpbBkCRg38fqNmu9VG6sn9bK1b38tvKnuDF3zn/Nq2J430eJ26c2uPLhmi9K1Zw2oD 0moBNvpK8+4jd/oUhPGvacX3hhtrHSIi+/XApBR7uJO8MmYcB5doKozwyXd1xYbvdk1FOTMQDda RVY1FqS7eGpc5U2S5PQHbzah7ByZaD4HMVtURF6lOLyK2tQS2Amv14DzQQLTc0KxIvRSdgL7wyY tiyF4LV8XB/+JkYmDznG9GZAbrjci8hymLfIa+LDCMBlYVBNoDbUgw8m5laYCEfhblS6FLkgozA G4JTAf4W2l7dXORd1hUW6FzlwkwYa/tVNLK7ZG+V2j5kofsJNOJDX7KEomUJEL1sOGg== X-Received: by 2002:a05:620a:4606:b0:8a1:a5c5:ef18 with SMTP id af79cd13be357-8bef2e5aeacmr202672185a.7.1766062473101; Thu, 18 Dec 2025 04:54:33 -0800 (PST) X-Google-Smtp-Source: AGHT+IEFVhNleIagJjbTmayjBVlxQUPdoMsqVJTwevIXX3mxEIJmE3AC7VrtbFRwhWh+AzDfrO3NOA== X-Received: by 2002:a05:620a:4606:b0:8a1:a5c5:ef18 with SMTP id af79cd13be357-8bef2e5aeacmr202670285a.7.1766062472712; Thu, 18 Dec 2025 04:54:32 -0800 (PST) Received: from [192.168.119.72] (078088045245.garwolin.vectranet.pl. [78.88.45.245]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-64b5889d412sm2452925a12.33.2025.12.18.04.54.30 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 18 Dec 2025 04:54:32 -0800 (PST) Message-ID: Date: Thu, 18 Dec 2025 13:54:30 +0100 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] arm64: dts: qcom: x1e80100: Add '#cooling-cells' for CPU nodes To: Manivannan Sadhasivam , Dmitry Baryshkov Cc: Manivannan Sadhasivam , andersson@kernel.org, konradybcio@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20251015065703.9422-1-mani@kernel.org> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: O3O2rkKFYLRFYsdaqwbKujaoFvY_2uID X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMjE4MDEwNiBTYWx0ZWRfX3txXuQ2+kqSf qPGcPCNlbe7KAcmvfxs4ar+kXnYGcI6VBPXuILq69sMtp3rlqvrUBV6HzOmfOBaUlVEQrzd/7T+ 0297Su2bOeE6M4prhC/4ACErKvr7wSnuw+lRPvg5Wrho6WRu9+2ez0Rh+hw75yK0l20huRUtLd0 2qS9YKMQb5oQrPQofKKXILdMtEMXFfMxgJrXxYq1EaTdlRRKAT58VHbwVpxNw/3fw0lqJ6T4xv1 OVDJ/iN5SoSK+pYVctJd2D6dgO8pdyMcoI5cz50+RX0qTk8zQ2vQjymuf7+u6DoFAKvGehW7Bo8 J9CHB85G1wrzK2kbDqNvYYRol3KBGRTtO3+vuOh+WKv+xy53BArFvTfTjY8eGM1DZA67nxgp6JW 8RUQ1U5NkEzNzzk8oRkqrhYyQFwfkA== X-Authority-Analysis: v=2.4 cv=NPHYOk6g c=1 sm=1 tr=0 ts=6943f989 cx=c_pps a=hnmNkyzTK/kJ09Xio7VxxA==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=wP3pNCr1ah4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=TZdRZBtRXuM2BF84sGEA:9 a=QEXdDO2ut3YA:10 a=PEH46H7Ffwr30OY-TuGO:22 X-Proofpoint-GUID: O3O2rkKFYLRFYsdaqwbKujaoFvY_2uID X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-12-18_01,2025-12-17_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 lowpriorityscore=0 suspectscore=0 phishscore=0 clxscore=1015 bulkscore=0 impostorscore=0 adultscore=0 priorityscore=1501 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2510240001 definitions=main-2512180106 On 12/8/25 6:13 AM, Manivannan Sadhasivam wrote: > On Sun, Oct 19, 2025 at 07:01:30PM +0300, Dmitry Baryshkov wrote: >> On Wed, Oct 15, 2025 at 12:27:03PM +0530, Manivannan Sadhasivam wrote: >>> From: Manivannan Sadhasivam >>> >>> Enable passive cooling for CPUs in the X1E80100 SoC by adding the >>> '#cooling-cells' property. This will allow the OS to mitigate the CPU >>> power dissipation with the help of SCMI DVFS. >> >> #cooling-cells isn't enough, the devices need to be listed in the >> thermal maps. >> > > Not strictly required unless the cooling device and trip points are wired in DT. > But I don't want to do that yet, and just expose the cooling devices to > userspace so that I can experiment with something like thermal-daemon. Rob, Krzysztof, Would it be an overly ambitious idea to make #cooling-cells required for CPU nodes? I'd imagine some sort of cpuidle or cpufreq is desired on almost all platforms, which could be used as a cooling/throttling measure.. Konrad