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Thu, 09 Apr 2026 04:44:57 -0700 (PDT) Received: from hu-arakshit-hyd.qualcomm.com ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2b2749cbd9fsm230957355ad.75.2026.04.09.04.44.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Apr 2026 04:44:57 -0700 (PDT) From: Abhinaba Rakshit Date: Thu, 09 Apr 2026 17:14:10 +0530 Subject: [PATCH v8 3/5] mmc: sdhci-msm: Set ICE clk to TURBO at sdhci ICE init 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-Transfer-Encoding: quoted-printable Message-Id: <20260409-enable-ice-clock-scaling-v8-3-ca1129798606@oss.qualcomm.com> References: <20260409-enable-ice-clock-scaling-v8-0-ca1129798606@oss.qualcomm.com> In-Reply-To: <20260409-enable-ice-clock-scaling-v8-0-ca1129798606@oss.qualcomm.com> To: Bjorn Andersson , Konrad Dybcio , Manivannan Sadhasivam , "James E.J. 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Petersen" , Adrian Hunter , Ulf Hansson , Neeraj Soni , Harshal Dev , Kuldeep Singh , Rob Herring , Krzysztof Kozlowski , Conor Dooley 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, Abhinaba Rakshit , Konrad Dybcio X-Mailer: b4 0.14.2 X-Proofpoint-ORIG-GUID: j-GUIY7FOHbX98_COueymcXA6z2-Qtym X-Proofpoint-GUID: j-GUIY7FOHbX98_COueymcXA6z2-Qtym X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDA5MDEwNSBTYWx0ZWRfX2cuJFp/wT6VO Le0sItz6FKVrFLKnPDyuOeFFe+Kcz+iX5LfZIysbMC9vZ4UehGnuirjylbJK69RZYZQbZxJij1T bRkxYcfNsMnGQIlx57nm60LmyCrOMle8TTXG8wFTJhg2qUv2cM3hi+/DMpc1omrw8VXGVICPBkY 13bjUvdNf8R7yIWEbQbMRqqpKQ0XYE6LZOx2dpQa7bVjuv43H0KTtv1OXFXen9piJkN8jahKbx4 MlWlGanHebIHqhnDzlbHceAOpMk64xHy80ssFJs4L5Y3Y/aUgYBRFDGwUasu8Oq8CGFNWOI7IHp VGfPQuVatH+3+XfEzqYkit7nhdqsNKE8hDy7RnoqTJ084sHRdWMIyk5iTwJ7yiJZQ7z55h5Uroo nhO9ILrQuaaojQlfTEE6ozKajNUIBlm9dBSrcHV17rnhijig2Gj94cxVwifgh0u1nGLaD3xKvyX 99qmlHK5W30UmORK/rQ== X-Authority-Analysis: v=2.4 cv=BefoFLt2 c=1 sm=1 tr=0 ts=69d7913b cx=c_pps a=MTSHoo12Qbhz2p7MsH1ifg==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=IkcTkHD0fZMA:10 a=A5OVakUREuEA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=3WHJM1ZQz_JShphwDgj5:22 a=EUspDBNiAAAA:8 a=PzEurhthzZq-M9kHIYIA:9 a=QEXdDO2ut3YA:10 a=GvdueXVYPmCkWapjIL-Q:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-04-09_03,2026-04-09_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 adultscore=0 suspectscore=0 spamscore=0 priorityscore=1501 phishscore=0 malwarescore=0 bulkscore=0 clxscore=1015 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604010000 definitions=main-2604090105 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 sdhci_msm_ice_init 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. Reviewed-by: Konrad Dybcio Signed-off-by: Abhinaba Rakshit --- drivers/mmc/host/sdhci-msm.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c index da356627d9de6a11ed5779bf057fa8eb23c38bc0..32e3f37fe425f66c00290a373e0= 6e8ab6257824e 100644 --- a/drivers/mmc/host/sdhci-msm.c +++ b/drivers/mmc/host/sdhci-msm.c @@ -1901,6 +1901,8 @@ static void sdhci_msm_set_clock(struct sdhci_host *ho= st, unsigned int clock) #ifdef CONFIG_MMC_CRYPTO =20 static const struct blk_crypto_ll_ops sdhci_msm_crypto_ops; /* forward dec= l */ +static int sdhci_msm_ice_scale_clk(struct sdhci_msm_host *msm_host, unsign= ed long target_freq, + bool round_ceil); /* forward decl */ =20 static int sdhci_msm_ice_init(struct sdhci_msm_host *msm_host, struct cqhci_host *cq_host) @@ -1964,6 +1966,11 @@ static int sdhci_msm_ice_init(struct sdhci_msm_host = *msm_host, } =20 mmc->caps2 |=3D MMC_CAP2_CRYPTO; + + err =3D sdhci_msm_ice_scale_clk(msm_host, INT_MAX, false); + if (err && err !=3D -EOPNOTSUPP) + dev_warn(dev, "Unable to boost ICE clock to TURBO\n"); + return 0; } =20 @@ -1989,6 +1996,16 @@ static int sdhci_msm_ice_suspend(struct sdhci_msm_ho= st *msm_host) return 0; } =20 +static int sdhci_msm_ice_scale_clk(struct sdhci_msm_host *msm_host, + unsigned long target_freq, + bool round_ceil) +{ + if (msm_host->mmc->caps2 & MMC_CAP2_CRYPTO) + return qcom_ice_scale_clk(msm_host->ice, target_freq, round_ceil); + + return 0; +} + static inline struct sdhci_msm_host * sdhci_msm_host_from_crypto_profile(struct blk_crypto_profile *profile) { @@ -2114,6 +2131,13 @@ sdhci_msm_ice_suspend(struct sdhci_msm_host *msm_hos= t) { return 0; } + +static inline int +sdhci_msm_ice_scale_clk(struct sdhci_msm_host *msm_host, unsigned long tar= get_freq, + bool round_ceil) +{ + return 0; +} #endif /* !CONFIG_MMC_CRYPTO */ =20 /*************************************************************************= ****\ --=20 2.34.1