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 8FA4730F921 for ; Thu, 19 Feb 2026 09:58:53 +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=1771495134; cv=none; b=YaURo44J2eV4gKfSkuKbR0Lfa9/RZugzZQw/PimQTGafhxIY9uujsvx2Tv9ABZZpitNCnPJmtgrM7QReli6hpgZHXLyR4A5S4PaKaztg7Y0rrY549Wt8N31eZEZvjUB0iq2cYCeU2BVs974OPRPzwrPhNDWpzMavYJl9qWGOKeA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771495134; c=relaxed/simple; bh=pdfpoC3jVEsg2mTi9NV5+lcx/3u5nMQepBsWbZrdRTg=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=HHhJ4VBuH26RgVZZOkZtV9nbMkV0Rfi55siAD9y1ez5FR1Atki9umOBssHNk6ZJ+k45gwNu1T/E+RzriTF9/SB8yJlb9/RQq2Xz4MZiG0mQFepMvkUvsF71S/Te2UsLWm2N3lZubBo4MtL3mgqZEC+ghnGU2dngzRAc7/gfYMAs= 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=cWHA1eWy; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=Mmd2HkWw; 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="cWHA1eWy"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="Mmd2HkWw" Received: from pps.filterd (m0279865.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 61J65bMu3982786 for ; Thu, 19 Feb 2026 09:58:53 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= dp6lkKnOQAqyAsl7Ok59pbcSrf7YRsjhfIHiueCYf98=; b=cWHA1eWyOwzvfz6q lh3Fe1jp1wHjvxgNo4thGOeHAb7SY+jtYGMjmOhlojzUxWiTs0dJiBEvsBVAD4RG LKwZHoV7/fY/GnuuZsNzcl7SlPpPHgRzoeJauve8p7572GDz0jif9kpSds8NQ1hd zJcUmzRgeyuQV1eBSMdDBvfl5KsOJv9aE/w8oSvDeNn7wn7EdfOwgn7XjUMojSdX kRH4h+TNLkhPFSGUkmwO3kn6d/rahn2V8qpZTyAbI6VI/bm4M4j6F3jOx1BBYmC4 z2ElB5xops+fmzVP6D0tknKHNFLt2rfMddWQ/52QkAuwYXWXRq3forJN6Rdgvks4 KNdgAg== Received: from mail-qv1-f70.google.com (mail-qv1-f70.google.com [209.85.219.70]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4cdc7ub7fm-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Thu, 19 Feb 2026 09:58:52 +0000 (GMT) Received: by mail-qv1-f70.google.com with SMTP id 6a1803df08f44-89547ddf32bso6675186d6.2 for ; Thu, 19 Feb 2026 01:58:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1771495131; x=1772099931; 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=dp6lkKnOQAqyAsl7Ok59pbcSrf7YRsjhfIHiueCYf98=; b=Mmd2HkWwsH79SojZ+NebTrIWywN61KmT+vfQ772WibbiBWyj/Sk2PvXqNokh278iZB 4jo1IvHNDZq0E9LAMeqTLsq3nHzxeDNdRzgYQmbEZopyl7F+xPgF3/04Q3mKg57wqXjy /I23G5OeEifL9cDpZ9s9aA8C/T0TYV+gUSSfr7UOPfrihIs3Oe29w5aP/uuJCVMPMdz3 sGDM5c4i09DXvWcMBGtymU0DPvmNK+J6fTCrvRsN7BSAvxqZBV1TphukWr2+Yz1XvAKa iEpV8vVu6myobirIZQhpRuP8/KKMFJ4YKeUALKf4kD2rnj5LNH21bIwlHAuRxRDqxbKl 3NCw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1771495131; x=1772099931; 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=dp6lkKnOQAqyAsl7Ok59pbcSrf7YRsjhfIHiueCYf98=; b=weQwfPRKpwx2VIhjZVou+r0Zf2BbYMoeBtdZ+5ludX5WuPRrmpGnsLtiTx2BAYSdkk OFy3K4rOX5qpXZOonr+OjHjqVIraON8Qtw0f2IbQhsZaAf32+jJdRTDvj56/bp8iZBuM 8rWEqxoxEUcnINfXFHsgAr4XTCJG0+x92uzSszInIVyBrsmGZ/B6hypcFH9ilItRj0e7 PpMIjPV9oCYGbM554W5zV6xeKhPqKXAqSnuri0OYNDDX8FEP+sBe2QigpdQytLs5qWY0 614yOobkOZ+5dt+y/06tCEQIugWpnhbNuA3uyxIlTtz95S+az1hFWGslsYgu8Ju/dn23 5MYQ== X-Forwarded-Encrypted: i=1; AJvYcCVVszCMVDCMUzPSOKtldwCgG7j/wqm/NVvZVoOzB9Eicnx2O9X08P6uiOf1G2FpdgII4RpPm4BkMDtnT94=@vger.kernel.org X-Gm-Message-State: AOJu0YzvoHR2+2+DcJQtT4aSJWOn9xtGMnJ8KiQSx7Hd8CRWLBSNTRqI LAMl47YNaTh2jVrlcpQMsqXAkY1Ng3fBQResxJFQsJmss6rxdUrpp1SwkNJE7w/Cp65vF8VRqWi MY0SwBU0//N0rYdZkNInbZ6CpThND3kIoQPTNZOuIzcd1f/IVT4CF5zSdKIsqqCgGSgw= X-Gm-Gg: AZuq6aLt6ykSUV9xmtltSsymBifzWY0C4Cg1+CllS1K78jwhxyVU/vscJ5IsaXwGDxF s7y2pfcf2yUN0G+wobWQijNw9oZQIZw5d/rEQrs+AEzjq39sLysC/g4Kusb+Jf6LOopJ3RGPlfg JdAZeQyLHVyHrtW/RX4pgE3AKh0Dl1zO+5odX+gH/ZQ1VEHLKJHhcDBsEJgRxRcf22SYtQ7kXcV C05bcJAVZ0gKzcE3R2qH5BtxiLKIC4wgFRrgFs5ftFn8kAuIsJ5P6MYhQd9K4t+qxCO1oSnX0NM KPUHWUS7Ft/twIb3tgePRUN23sMQV50TKCTYj/emaq9yHr8QnV3f1hq3vO79IQ2PhIp8mBg6qix Ub40odbju9LxNFtZ4LoWjHvLAXZ+wuN1KxJ0LL5OXW80R5sYZ7pCb5LMuAZ6jm2DIsIYusaLhwR XImK8= X-Received: by 2002:a05:6214:8095:b0:896:f9ed:bea1 with SMTP id 6a1803df08f44-8994ac78794mr89723316d6.7.1771495131476; Thu, 19 Feb 2026 01:58:51 -0800 (PST) X-Received: by 2002:a05:6214:8095:b0:896:f9ed:bea1 with SMTP id 6a1803df08f44-8994ac78794mr89723176d6.7.1771495131050; Thu, 19 Feb 2026 01:58:51 -0800 (PST) Received: from [192.168.119.254] (078088045245.garwolin.vectranet.pl. [78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b8fc7627fa7sm562549666b.38.2026.02.19.01.58.49 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 19 Feb 2026 01:58:50 -0800 (PST) Message-ID: <1c43591f-ffc3-433e-94b2-8cc7bdb3ec62@oss.qualcomm.com> Date: Thu, 19 Feb 2026 10:58:48 +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 v2 3/3] arm64: dts: qcom: sm8550: add cpu OPP table with DDR, LLCC & L3 bandwidths To: webgeek1234@gmail.com, Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Georgi Djakov , Sibi Sankar Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org References: <20260218-sm8550-ddr-bw-scaling-v2-0-43a2b6d47e70@gmail.com> <20260218-sm8550-ddr-bw-scaling-v2-3-43a2b6d47e70@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-ORIG-GUID: mKNiJa3VeqZFi356TS_Sa2VBIB-7Z3yY X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjE5MDA5MSBTYWx0ZWRfX1pIyZ0W6J/L7 p1xxMYbIIbsRQR+/MkThXn1o0X4iUDcU1C3hGBB25fklrXeUM9Bk9j3zywrkQke0Z0DkGODCzb4 ianJXzCIUTyJnRNYbehzmFpK3/yf8YEaUB14VNPJ2BCN1x6z6FSbE+9Caqd8HK8Hg5/yWil3kcQ LWMmVY6a/JYA07I9go+yU8AYD12elbtsuYFnHNBZaaRY87mWIkOt9yfbCN/u+AWrff32lOqqEqA 5UBy5JIKHFN2Ky9zu960i0WWxjDegCyav4G6KMr81JEtxA1U2/WaHw0CWs77s3zQMelseaenENj 6TwrdhjsE1mJjMzyNFJ6GQwygrNNJdbk4/i+igFceIGoBI1hu22KoswXKDBC929+RSlY4CK8ACU gl+YR4Jg62kcCigGjmdIiQi1chqXMnsyDfePiuporw2ORFbqcUCGVW54tGliIrmLRnF5xaK/5ua wkUJLEPxpI913eQPX/g== X-Proofpoint-GUID: mKNiJa3VeqZFi356TS_Sa2VBIB-7Z3yY X-Authority-Analysis: v=2.4 cv=daCNHHXe c=1 sm=1 tr=0 ts=6996dedc cx=c_pps a=oc9J++0uMp73DTRD5QyR2A==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=HzLeVaNsDn8A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=Mpw57Om8IfrbqaoTuvik:22 a=GgsMoib0sEa3-_RKJdDe:22 a=pGLkceISAAAA:8 a=EUspDBNiAAAA:8 a=XEhIh8xtOs_--jVvVqkA:9 a=QEXdDO2ut3YA:10 a=iYH6xdkBrDN1Jqds4HTS:22 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=2026-02-19_03,2026-02-18_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 bulkscore=0 adultscore=0 lowpriorityscore=0 malwarescore=0 spamscore=0 clxscore=1015 suspectscore=0 priorityscore=1501 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2602190091 On 2/19/26 10:57 AM, Konrad Dybcio wrote: > On 2/18/26 7:16 PM, Aaron Kling via B4 Relay wrote: >> From: Aaron Kling >> >> Add the OPP tables for each CPU clusters (cpu0-1-2, cpu3-4-5-6 & cpu7) >> to permit scaling the Last Level Cache Controller (LLCC), DDR and L3 cache >> frequency by aggregating bandwidth requests of all CPU core with referenc >> to the current OPP they are configured in by the LMH/EPSS hardware. >> >> The effect is a proper caches & DDR frequency scaling when CPU cores >> changes frequency. >> >> The OPP tables were built using the downstream memlat ddr, llcc & l3 >> tables for each cluster types with the actual EPSS cpufreq LUT tables >> from running a QCS8550 device. >> >> Signed-off-by: Aaron Kling >> --- > > Once squashed: > > Reviewed-by: Konrad Dybcio FYI I did notice a couple of "trip points" in the downstream DT that refer to higher than described (i.e. >3 GHz) OPPs, but I can't find data about them internally. Anyway, this is good and if someone has a "very fast 8550", we can always extend that Konrad