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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: devicetree@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-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjI5MDA5NyBTYWx0ZWRfX+DlAxe309F0O xoRjGX5bC5HK7E2W1Qnz4q3biA+obmnB+Of+3ZROIUd4Ca1U1VnnIKZplInafyZU6uFXAO5afpQ XXzm5RbClHnfmCpKv4De8D06HNJn3vxs6Fxjs0BWhhVzde4CT0luDGUHCdWE/1zvrkp+4BC0f6I 3PB6tCfYjZdqBlbTxhEXqoPzAzbJoJPwtAc40CuW/6EOYReVM+3XlSJ3i1jqGpB6NPRXPPs+QGt ESwlaXYkRB/6SfkILp7K8IAwAAEqCk6R7CgowWmKz8YUNbX67SpGBlP68BsSfRkZHIWNFA/SNPO Wbf3XoubmEExlqqpwgKxfHiUj0qeOJkxtjEKUP34sU55/kUKUhEGgzV88LdV251HoV5OmA3nFiU q0L5n/m9foy31UIzHAPJo5p/Xj24aBDXRlMW8/sRbYRClxOpETMDOH9dpU1USza0UTsSHb1TANh o8glXEenoj2IcforY5A== X-Proofpoint-GUID: 4BdGPfxYlR66GCXOlFt6nThcQ_vpWyGV X-Proofpoint-ORIG-GUID: 4BdGPfxYlR66GCXOlFt6nThcQ_vpWyGV X-Proofpoint-Spam-Info: AW1haW4tMjYwNjI5MDA5NyBTYWx0ZWRfXxclvLZ1Y69J9 ZMy+ns/tGo8p+6Sb7PbIcMOt5ZSt+tgqGs8xvukXrdEZKilsARqtFlv/5Zu6eDIX+JaGEj1aViY bXUls1d4l58V6o95fFFFb9P+5dLAXEM= X-Authority-Analysis: v=2.4 cv=OcWoyBTY c=1 sm=1 tr=0 ts=6a425c57 cx=c_pps a=JbAStetqSzwMeJznSMzCyw==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_glEPmIy2e8OvE2BGh3C:22 a=DUC2ZapgCAhEJWWdRLYA:9 a=QEXdDO2ut3YA:10 a=uxP6HrT_eTzRwkO_Te1X:22 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 lowpriorityscore=0 adultscore=0 spamscore=0 clxscore=1015 phishscore=0 bulkscore=0 suspectscore=0 impostorscore=0 malwarescore=0 priorityscore=1501 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