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Wed, 14 Oct 2026 04:17:13 -0700 (PDT) X-Received: by 2002:a17:90b:3b82:b0:3ab:4f1:4f76 with SMTP id 98e67ed59e1d1-3ab3a94f426mr14359445a91.24.1791976632686; Wed, 14 Oct 2026 04:17:12 -0700 (PDT) Received: from hu-arakshit-hyd.qualcomm.com ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3ac6325e28dsm1962341a91.1.2026.10.14.04.17.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Oct 2026 04:17:11 -0700 (PDT) Date: Wed, 14 Oct 2026 16:47:04 +0530 From: Abhinaba Rakshit To: 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 , Kuldeep Singh Cc: 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, Konrad Dybcio Subject: Re: [PATCH v12 0/6] Enable ICE clock scaling Message-ID: References: <20260824-enable-ice-clock-scaling-v12-0-09271f583dc6@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20260824-enable-ice-clock-scaling-v12-0-09271f583dc6@oss.qualcomm.com> X-Proofpoint-ORIG-GUID: wDY_lYYxWFPFVVtAXR3-QIHpDxXmPsNk X-Proofpoint-GUID: wDY_lYYxWFPFVVtAXR3-QIHpDxXmPsNk X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDE0MDA0NCBTYWx0ZWRfXwf+ybqLAHvcc d2vc7dKDvnQWt4r0mJZ4NAickdRfe5STbepqhnrTnr2CAns6gY6SqwfYiFYTDRS8L48yFr4qZrW eNxukw6LLFQ+ajgLZrGidc7XAfl5qgiUpX5SsD9oRvJYfioCtAXNNOhH3Lw5MBm+9WBplbwE7Rp x1AyA3EUDLMglV94YiSgpwqu7jwnOfYIc3BDpwpFvvkkqJ1JuVXcGxR4jye6cnu3vhY9awZRR1h bWiGkv8T/ftJOvFbgpHNkPVzmgaZlEZhF6pGXwCL/KTEBSVhqsWGy7T+HZ/ECmR/MyI2c+pBUh2 Z2ZBiVm91ZSdqfxMJFKn0CJdeYm8B0aNjKobkxk+w88MIsMhaRX3PHh5vez/g1cyR5EvD6jSTNj srxYAst63vnbielTsMBmHV+jaQ1dM1FgWJSACpzHPiK8O27CdJnGXBBNDu83MHZeHxkRWcpkUYQ V2L7ms6KlOwt+nIZLOQ== X-Proofpoint-Spam-Info: AW1haW4tMjYxMDE0MDA0NCBTYWx0ZWRfX3q5AzOPHGP9+ 6jkNZ3VmkAQ5tNyoTUCcR5uBuZ3FCRbbp4ueYU8LjzUqgom0O1CbS+QkqijNVWVLy6k+dAmJYgp cuwlUgcftscj6RT9PL9w3bv2o6pUdtc= X-Authority-Analysis: v=2.4 cv=U7AHnuru c=1 sm=1 tr=0 ts=6acf64b9 cx=c_pps a=UNFcQwm+pnOIJct1K4W+Mw==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=Um2Pa8k9VHT-vaBCBUpS:22 a=yZ4vNV_xbO2V9HmvDQUA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=uKXjsCUrEbL0IQVhDsJ9:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-10-13_01,2026-10-09_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 priorityscore=1501 malwarescore=0 lowpriorityscore=0 adultscore=0 impostorscore=0 bulkscore=0 phishscore=0 suspectscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610080000 definitions=main-2610140044 On Mon, Aug 24, 2026 at 01:17:37AM +0530, Abhinaba Rakshit wrote: > Introduce support for dynamic clock scaling of the ICE (Inline Crypto Engine) > using the OPP framework. During ICE device probe, the driver now attempts to > parse an optional OPP table from the ICE-specific device tree node for > DVFS-aware operations. API qcom_ice_scale_clk is exposed by ICE driver > and is invoked by UFS host controller driver in response to clock scaling > requests, ensuring coordination between ICE and host controller. > > For MMC controllers that do not support clock scaling, the ICE clock frequency > is kept aligned with the MMC controller’s clock rate (TURBO) to ensure > consistent operation. > > Dynamic clock scaling based on OPP tables enables better power-performance > trade-offs. By adjusting ICE clock frequencies according to workload and power > constraints, the system can achieve higher throughput when needed and > reduce power consumption during idle or low-load conditions. > > The OPP table remains optional, absence of the table will not cause > probe failure. However, in the absence of an OPP table, ICE clocks will > remain at their default rates, which may limit performance under > high-load scenarios or prevent performance optimizations during idle periods. > Konrad, can you please review all the patches in this patcheseries and let me know if anything is pending? Abhinaba Rakshit