From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (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 CA2E02D29A9 for ; Fri, 27 Jun 2025 12:35:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751027732; cv=none; b=B3Gs9uT8ChIFWkDzJPTdSUAOKDx+YPMZ6n1CiU9O9rI09b0IEEdqraP/6+3TBzed1n3A0j+17/ORgeLn1+p5fuZs9zODgO4YqyXQkuw3VVF0uY8jvB2+pfZyIddZcBbCgaW3TIZ82jlBdZNpsllHA+ChLtY2jjVoR+Y5u38HxLY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751027732; c=relaxed/simple; bh=Qo/Y9vysAF4/XtHmYuHzfr7cv1qLfdc+GSgIJ07pEJM=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=MVdMFfnARjbgu1uMo3+Hb6JNW6axaYMJroAzqz6P+YAQs1zCzJnj42LZm74FPkjP2LwOHCb71HcdCXeqDdW85ZJ3nj1x7YA5VCu9vlrqmPWm1mOtfDMnTxdOulkIWuQyTZ+UoJZCpasXFAVwIiY/CIRZwmqYCf+xIoqAYc+HLrE= 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=V08rrKPZ; arc=none smtp.client-ip=205.220.168.131 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="V08rrKPZ" Received: from pps.filterd (m0279863.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 55RC8HR3014328 for ; Fri, 27 Jun 2025 12:35:30 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= 5B6rDC7Vr1OqFX/DSU9HEATQTSwn7MiEoOr0N6M/z1w=; b=V08rrKPZT13wrgdz 4jx1J6fimFSHvTE8S4wAZQYB5RA+DfD7y44/j60bFBuzMhMduIFlLftSPFu5ON33 GNDY9CJU2yOsrz35vQkRd/uoUeLLtETUEB3qcTptQP0PJsmQbjwqUrg0cTpxIbNO 55tBd4mImV429y91v3BM2JahCwEtfMQXSEPbgqchjkYD4zEEqH6tfN13A76puaPT baF2x4E+tnis8Jeassao17Mx5/70wBQ8Ogcsyeu1I3Ld9d9pfQ0qUjVqfZCc13EG XJKkmwNbwt3RZ/ULnbtHTJvvvfG/l+0S9k4MLr0bSmwuFz6UOMvhcBV5IlBKF+qV BhmCEQ== Received: from mail-qk1-f197.google.com (mail-qk1-f197.google.com [209.85.222.197]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 47emcn0m3u-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Fri, 27 Jun 2025 12:35:29 +0000 (GMT) Received: by mail-qk1-f197.google.com with SMTP id af79cd13be357-7d3e90c3a81so200922085a.1 for ; Fri, 27 Jun 2025 05:35:29 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1751027728; x=1751632528; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=5B6rDC7Vr1OqFX/DSU9HEATQTSwn7MiEoOr0N6M/z1w=; b=sRVphPvrTVH1ZUVtmyNKAI1k5RGJhSTdFsHkpfPMnBzBecYCY6PKYyuuzzT6bJZpZq ggNd1InMFts9XL/czlRZAPrlSQy6MPyQoNioUqzS9JzxKVb1UjZrI5xba1JPABGuRUeY gYOE+bOzKlCvmozT1ePM0AKoyGRcs4Sdv6vMMrRWXfUCBWmd6L5f0hdwww1HTUKUu84T C18umMERRtyf4r206b4f7iSL1pDXwsWydr1jEl3WQUOM2+Yd9lU2T9Uu+k+/M8RHPZQk o/nBVi+qGmspeHCboObQl8TmPi/8roPGMZxCzBr+A9Igye+Ft9QI1op4jTG20y5HsU3k wC2A== X-Forwarded-Encrypted: i=1; AJvYcCVbx2TXbHdMM3wzAZelPgY1HvgFKUxxHTO4szf0klbs2hTjDzxZQTfGTn1wEbYkbkjCRy+GVV1ZO3PNceM=@vger.kernel.org X-Gm-Message-State: AOJu0YzeT5dO8FqtfD8qgx3Gc9QHEoqLwJCTa6m4db+OAfsryyR5U8b5 lOaD5KqFeYCAoBFyW9V/TWVU1FaxrYTjPrZy913SUYmDf3nnUswndYl5SI88Ql35q+NmQA2nYiM oAP+dD5UwXWF7Y2T7ZHE2IbaBJOh7AQHD9MRyWIVBNo09PSFOg2lzVEwSIi+TZyBja7Q= X-Gm-Gg: ASbGncupntBZOkO+qvJoaPU35D9A0Qlu8kuA8uZf+kFJhPlVUU+BaV/KeOS5YJaRH3w N6lL55EBrj5nNhYAomLnZFc8hSmzoxPcYFGxXVZ6nCf+f6uU0fbDIUPPgku0iVXowQpB2p6biBa v3t81RHTePtaCiicj4jBG0pPEC7Vx6Ulkp7VXMVqlBgAd9ilXWQR3x8IY56m/81ij6AjouwfixY Pxfm7awA6cH7JQLqsP5lClUBVZ09Kc/cyzVlVEBmo32GZEZk18a+rkYmgo0YXg8RLVGWaYWcvkF rvE/dmUmyijKV+saIwnYQKeN8qa1KodCYpqiQvIno+2t1Qf4RjDgSZnJ0N1Tlon1JVVK9+z0 X-Received: by 2002:a05:620a:29c2:b0:7d3:f906:8652 with SMTP id af79cd13be357-7d44397de59mr425854785a.12.1751027728357; Fri, 27 Jun 2025 05:35:28 -0700 (PDT) X-Google-Smtp-Source: AGHT+IHLG7VXVkZfcdvopkn9k67+75T7P739XrC3+C5fZEhATwKbfj5hRgaIazp9JTVb6Ss888RxsQ== X-Received: by 2002:a05:620a:29c2:b0:7d3:f906:8652 with SMTP id af79cd13be357-7d44397de59mr425850685a.12.1751027727809; Fri, 27 Jun 2025 05:35:27 -0700 (PDT) Received: from [10.185.26.70] (37-33-181-83.bb.dnainternet.fi. [37.33.181.83]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5550b24d51fsm440779e87.62.2025.06.27.05.35.25 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 27 Jun 2025 05:35:25 -0700 (PDT) Message-ID: <66c71817-442c-4a7b-8d10-48e6751c8e2f@oss.qualcomm.com> Date: Fri, 27 Jun 2025 15:35:30 +0300 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 v4 2/2] arm64: dts: qcom: qcs615: Add CPU scaling clock node To: Taniya Das Cc: Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Ajit Pandey , Imran Shaik , Jagadeesh Kona , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20250625-qcs615-mm-cpu-dt-v4-v4-0-9ca880c53560@quicinc.com> <20250625-qcs615-mm-cpu-dt-v4-v4-2-9ca880c53560@quicinc.com> <2b29ae78-e4a0-4d25-a694-abb10883086d@quicinc.com> Content-Language: en-US From: Dmitry Baryshkov In-Reply-To: <2b29ae78-e4a0-4d25-a694-abb10883086d@quicinc.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: TSDDLm4DKikc54P37CB5VuuRwyAemEn1 X-Proofpoint-ORIG-GUID: TSDDLm4DKikc54P37CB5VuuRwyAemEn1 X-Authority-Analysis: v=2.4 cv=J+eq7BnS c=1 sm=1 tr=0 ts=685e9011 cx=c_pps a=50t2pK5VMbmlHzFWWp8p/g==:117 a=a09MB1VsJqAZHPW3esczKA==:17 a=IkcTkHD0fZMA:10 a=6IFa9wvqVegA:10 a=COk6AnOGAAAA:8 a=14MXtV-COIB55QcvAqAA:9 a=QEXdDO2ut3YA:10 a=IoWCM6iH3mJn3m4BftBB:22 a=TjNXssC_j7lpFel5tvFf:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNjI3MDEwNCBTYWx0ZWRfXycJzMIL3Btc8 kbyFSIWbwxRE6jMjV36EymH2n8ldFhr/rCtrPs4kw4D61ie5OdBQI6gIxHUbhfyokKfNpTP0cQ6 BhoEVyqreYLyXNFc6pi9QsGfsWJ585dZFCGabpNeIG+HOq5SO9dbPZF2Ndjf4nGLduVZrL6ahaz zoQ2r3dcei6L9ZVJWStU0Gbr+ugN8QNXs2IBKl+DAaSeVbmXOWCGSLMgVuUtbub+EaBKuj1l2xW s3wSQ0wG9ptmoJ1x1MCkT+xsTXKhfDznUweRN7pKCDQTN+D50TG1k/DJCnwmmSMYJ3y4BCx0tj4 dxBGXw1Z8AD1Anqbe+1wY5OIl/ihpiOogaR4K6S6nDr63jhlunT5xE6oXY4qYewQd/zTBr7L19t 1OpBKydlDsQSO1toBr8XSDMkiqtYUAb7XjWuOKyhyBLL7N4mmMP3qLYKWhkQtTP5D+278i+0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.7,FMLib:17.12.80.40 definitions=2025-06-27_04,2025-06-26_05,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 mlxlogscore=963 adultscore=0 impostorscore=0 clxscore=1015 spamscore=0 malwarescore=0 phishscore=0 priorityscore=1501 suspectscore=0 mlxscore=0 lowpriorityscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505280000 definitions=main-2506270104 On 27/06/2025 06:52, Taniya Das wrote: > > > On 6/25/2025 5:06 PM, Dmitry Baryshkov wrote: >> On Wed, Jun 25, 2025 at 04:44:01PM +0530, Taniya Das wrote: >>> Add cpufreq-hw node to support CPU frequency scaling. >>> >>> Signed-off-by: Taniya Das >>> --- >>> arch/arm64/boot/dts/qcom/qcs615.dtsi | 29 +++++++++++++++++++++++++++++ >>> 1 file changed, 29 insertions(+) >>> >>> @@ -3891,6 +3907,19 @@ glink_edge: glink-edge { >>> qcom,remote-pid = <2>; >>> }; >>> }; >>> + >>> + cpufreq_hw: cpufreq@18323000 { >>> + compatible = "qcom,sc7180-cpufreq-hw", "qcom,cpufreq-hw"; >> >> Why? Other platforms use a true SoC as the first entry. >> > Dmitry, from cpufreq-hw perspective SC7180 is a exact match for QCS615 > and that was the reason to use the same. Please look around. A quick `git grep` would show that every SoC uses SoC-specific compatible (although some of them are definitely compatible). The reason is pretty simple: each platform might have SoC-specific tunings and quirks. -- With best wishes Dmitry