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Mon, 29 Jun 2026 04:51:50 -0700 (PDT) X-Received: by 2002:a05:622a:211:b0:51c:8fb:fa47 with SMTP id d75a77b69052e-51c08fbfae7mr8780401cf.9.1782733910231; Mon, 29 Jun 2026 04:51:50 -0700 (PDT) Received: from [192.168.120.170] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c124f1723c7sm259578966b.26.2026.06.29.04.51.46 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 29 Jun 2026 04:51:49 -0700 (PDT) Message-ID: Date: Mon, 29 Jun 2026 13:51:45 +0200 Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v11 5/6] arm64: dts: qcom: monaco: Add OPP-table for ICE UFS and ICE eMMC nodes To: Kuldeep Singh , Abhinaba Rakshit Cc: Bjorn Andersson , Konrad Dybcio , Manivannan Sadhasivam , "James E.J. Bottomley" , "Martin K. Petersen" , Adrian Hunter , Ulf Hansson , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Neeraj Soni , Harshal Dev , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, Dmitry Baryshkov References: <20260609-enable-ice-clock-scaling-v11-0-1cebc8b3275b@oss.qualcomm.com> <20260609-enable-ice-clock-scaling-v11-5-1cebc8b3275b@oss.qualcomm.com> <86321e30-2bee-41bb-9d63-d0e6ab4154db@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <86321e30-2bee-41bb-9d63-d0e6ab4154db@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=R8Uz39RX c=1 sm=1 tr=0 ts=6a425c57 cx=c_pps a=50t2pK5VMbmlHzFWWp8p/g==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=rJkE3RaqiGZ5pbrm-msn:22 a=DUC2ZapgCAhEJWWdRLYA:9 a=QEXdDO2ut3YA:10 a=IoWCM6iH3mJn3m4BftBB:22 X-Proofpoint-GUID: 4AYQNZLjJs2fKBwk5HA339378S3VUfQr X-Proofpoint-ORIG-GUID: 4AYQNZLjJs2fKBwk5HA339378S3VUfQr X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjI5MDA5NyBTYWx0ZWRfXwGhGQ3zFKjXE boOwhJZ/7pHFFRPrK5Z+j5fqpcCjtXqkutisgtvKKsXs5daF7JKoCc+q5ppuGWS/IR4VF/9Drq9 YEKT8X931213Zp2SkTVMJoVeFsdfcFOxlsl8EgE2NNt9P5WnCYNhWrrUi9yFu+e4k1VSyzDEKbS Mj8/4eClH0GaS93Nfo1DAKqnFW7e04ZCUdlEjHEjE3369g5mDQwwL09Sb1vIZYKZim2VoSckDE+ fmRzIHA0eawGG9gQpthC19SjiXX7xGaEZloTmzaV0fzEyTm3Y1Ta69s/7BS0m3vTKw2AECrGNrU KwcwMZ/DaKT3WEJ/O+uZ51OEyWxIjMcqyivcpTKjIFPAVkFLT1kiHxrrbEmwqIOZ8Sj0vvS+bXm 6KU496eExjLbmYgGNZMeSagoXjZSfqy0GGlnQInkMXPv6HLQvFcnR6Q0dP+hwU5wlKdz4da4HbH 6hg7nocNHLl+4jI/kHQ== X-Proofpoint-Spam-Info: AW1haW4tMjYwNjI5MDA5NyBTYWx0ZWRfX78D5xXxRNE/X 5uMsHyVJgt93pefbVx2+bMaahTQMaOjw4kvolljL9VbdZE5+nH8DymDeCEWlF9WTB7sDvqh0zQa QRM4RzgeLy2r2kW47tHhk2u7QBk6hm4= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-29_03,2026-06-26_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 phishscore=0 clxscore=1015 lowpriorityscore=0 adultscore=0 priorityscore=1501 impostorscore=0 suspectscore=0 malwarescore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2606290097 On 6/29/26 12:24 PM, Kuldeep Singh wrote: >>>> Since 75 MHz and 201.6 Mhz require the same power level, is the former >>>> OPP any useful? >>> >>> Yes, both use the same power requirements. However recommended by the ICE team, >>> the DT should include all opp/freq supported by the hardware. >> >> Is there any reason at all where the OS would prefer the lower OPP? >> >> I think you at one point mentioned some dependency vs the storage >> controller's clock frequency > > I think Abhinaba captured all possible frequencies(even lowest ones) as > what the hardware currently describes. It's upto storage controller > running frequency and let it scale ice clocks to higher/lower to it's > max capabilities. > > Describing hardware based information also avoid revisiting DTs at later > moment. I agree conceptually and it would be easier to agree fully if you gave me an answer like "this is useful when XYZ and ABC because DEF" instead of deflecting the question to the obvious fact of the hardware supporting that OPP Konrad