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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-59e5f5b2e35sm5303818e87.82.2026.02.19.06.18.28 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 19 Feb 2026 06:18:30 -0800 (PST) Message-ID: Date: Thu, 19 Feb 2026 15:18:26 +0100 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 v6 4/4] soc: qcom: ice: Set ICE clk to TURBO on probe To: Abhinaba Rakshit , Herbert Xu , "David S. Miller" , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , Manivannan Sadhasivam , "James E.J. Bottomley" , "Martin K. Petersen" , Neeraj Soni Cc: linux-arm-msm@vger.kernel.org, linux-crypto@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org References: <20260219-enable-ufs-ice-clock-scaling-v6-0-0c5245117d45@oss.qualcomm.com> <20260219-enable-ufs-ice-clock-scaling-v6-4-0c5245117d45@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260219-enable-ufs-ice-clock-scaling-v6-4-0c5245117d45@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjE5MDEzMCBTYWx0ZWRfX9IOeRPe3ThNA /nuQaOPFNGupddeqUYj1EjTvHxMNIw+MX1wtiqTzDPyI2bIa8iGwuomSPo/z89Sidk1Dfi3T0bJ 8io5Dj5gReTuz/jMrAU7vbc71I2XUIh5ffVhq/t55uGqU0pXZOlnY13vEdSZ2L6KQLHKCvuy2Cp NuKK6LzH18U+lp8JTxKPX5BjISbnQpWC87NojtEGlOIofEsJ4RnoVwDNCKWAPXKUryrHkf4mpKN 0W2Z8CErSKLM/IiBSMmsfhpuFxT8UHu+cfQDcQ4ccTvH6thnytzsC2RsqvFO2D8duVgg4yvRYcz 4yRVUFusEFeWlNnKdIfOAtEbTF/FWR7aQp7nTF7E8xoeD9pDj1uDTs18B1L5cfWmecvsogy8hYn U+D8OmZeHYeJBxmzw5B/s41zlLxFwC2aWiLxganALoSW3cjR65z+ixbjopdSPUq38ApNB5d/p2U +CNoY3Azu+GrMoKaDyA== X-Proofpoint-GUID: l97__CDymm_im_HJoSTZ8XQZrgje-eOa X-Authority-Analysis: v=2.4 cv=FoUIPmrq c=1 sm=1 tr=0 ts=69971bb9 cx=c_pps a=qKBjSQ1v91RyAK45QCPf5w==: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=EUspDBNiAAAA:8 a=kiQjUq8FSzjVjtPiR3oA:9 a=QEXdDO2ut3YA:10 a=NFOGd7dJGGMPyQGDc5-O:22 X-Proofpoint-ORIG-GUID: l97__CDymm_im_HJoSTZ8XQZrgje-eOa 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_04,2026-02-18_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 priorityscore=1501 suspectscore=0 phishscore=0 adultscore=0 lowpriorityscore=0 malwarescore=0 bulkscore=0 spamscore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2602190130 On 2/19/26 10:39 AM, Abhinaba Rakshit wrote: > MMC controller lacks a clock scaling mechanism, unlike the UFS > controller. By default, the MMC controller is set to TURBO mode > during probe, but the ICE clock remains at XO frequency, > leading to read/write performance degradation on eMMC. > > To address this, set the ICE clock to TURBO during probe to > align it with the controller clock. This ensures consistent > performance and avoids mismatches between the controller > and ICE clock frequencies. > > For platforms where ICE is represented as a separate device, > use the OPP framework to vote for TURBO mode, maintaining > proper voltage and power domain constraints. > > Signed-off-by: Abhinaba Rakshit > --- > drivers/soc/qcom/ice.c | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/drivers/soc/qcom/ice.c b/drivers/soc/qcom/ice.c > index 1372dc4a4a4d0df982ea3a174df8779a37ce07c6..a60a793f9c230e08ebd7cae89a828980e762db27 100644 > --- a/drivers/soc/qcom/ice.c > +++ b/drivers/soc/qcom/ice.c > @@ -665,6 +665,13 @@ static struct qcom_ice *qcom_ice_create(struct device *dev, > dev_info(dev, "ICE OPP table is not registered\n"); > } > > + if (engine->has_opp) { > + /* Vote for maximum clock rate for maximum performance */ > + err = dev_pm_opp_set_rate(dev, INT_MAX); > + if (err) > + dev_warn(dev, "Failed boosting the ICE clk to TURBO\n"); I suppose this isn't exactly critical, but should never happen either Nonetheless, it's fine Reviewed-by: Konrad Dybcio Konrad