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Wed, 22 Jul 2026 07:23:57 -0700 (PDT) Received: from hu-mchunara-hyd.qualcomm.com ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3147dc7d8fbsm11231211eec.10.2026.07.22.07.23.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 22 Jul 2026 07:23:57 -0700 (PDT) From: Monish Chunara X-Google-Original-From: Monish Chunara To: Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Dmitry Baryshkov Cc: Nitin Rawat , Pradeep Pragallapati , Komal Bajaj , Sachin Rathore , Monish Chunara , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Kamal Wadhwa , Konrad Dybcio Subject: [PATCH V4 1/4] arm64: dts: qcom: glymur-crd: Update VREG l2b_e0 and l9b_e0 voltage for SD-card Date: Wed, 22 Jul 2026 19:53:39 +0530 Message-Id: <20260722142342.990384-2-mchunara@oss.qualcomm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260722142342.990384-1-mchunara@oss.qualcomm.com> References: <20260722142342.990384-1-mchunara@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Authority-Analysis: v=2.4 cv=D+V37PRj c=1 sm=1 tr=0 ts=6a60d27e cx=c_pps a=Oh5Dbbf/trHjhBongsHeRQ==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=DJpcGTmdVt4CTyJn9g5Z:22 a=EUspDBNiAAAA:8 a=RbnQZSTpM6gPS1NYG1gA:9 a=_Vgx9l1VpLgwpw_dHYaR:22 X-Proofpoint-GUID: k-puLHvY-Uohfes0j6Js49BMqxUIMkRF X-Proofpoint-Spam-Info: AW1haW4tMjYwNzIyMDE0MSBTYWx0ZWRfX4ogxQWW8OQxW ilRiBy4woyYYthEhMV5JVMeb1e2JpVEY3URt2Rp8DIxaGqQXl65BCYZAXDtuGvmUWIAyin5gstX WM5Iu0reCwqd2NrDQbtrJEK6rhdC+cQ= X-Proofpoint-ORIG-GUID: k-puLHvY-Uohfes0j6Js49BMqxUIMkRF X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzIyMDE0MSBTYWx0ZWRfX4kGgcT6/Hag+ BmiP7LBZIpzExGV29LJEAdQDCMfpLDnMbyum/EOkPkcohftNSgu2FpsjTKZ/T7uzAfPf2FRh/oQ 9Fa63L31pCdxtHnO0ZWBmLE86nM5B0pMEGyKxf0uD71czRE5XVyEDLxUFQ+TN2242nmPrLu6pN/ 8NQ473Wtpfk0MbvhoI1F0SYfFmfjy58Lcb4rlwQgVEywz8tr1A3m+rThSgCh2gHm3SfCcc8+nTY x+pqVd4lxLQckfIh7x5biBedtEYrqpTUVapTWyZdgPfSwdiewayS8K4tMbjER6j12s3gA4JjmAQ rD2qK3A9ufFGRdDc44KLyqhiWJ4mG6gs7oUMHSrgRms8eNnsnueqcwsh6ZgZOnXdaa2GWeyUErI LX7cE/PaAqIUIBo3Sf1UZhHD9Au28RXxodALbNvApxX/sR0CpBnVCqYyvANcQ+CAsg/Ou3o4a89 1H5S3+FBSFL2SnSvptg== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-22_04,2026-07-22_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 spamscore=0 adultscore=0 lowpriorityscore=0 malwarescore=0 suspectscore=0 phishscore=0 clxscore=1015 priorityscore=1501 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607220141 From: Kamal Wadhwa SD cards may need 1.8v VDDIO also to be supported, to accommodate this requirement reduce the min voltage to 1.8v for `vreg_l2b_e0` which supplies to VDDIO pin of SD card. NOTE - Since this SD card is the only client on this regulator, this change should not have any side effect on any other clients. moreover, SD card driver takes care to explicitly vote for the regulator voltage based on the SD card detection sequence. Also for stable operation of the SD card increase VDD voltage supplied by `vreg_l9b_e0` to 2.96v. Signed-off-by: Kamal Wadhwa Reviewed-by: Konrad Dybcio Reviewed-by: Dmitry Baryshkov Signed-off-by: Monish Chunara --- arch/arm64/boot/dts/qcom/glymur-crd.dtsi | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/arm64/boot/dts/qcom/glymur-crd.dtsi b/arch/arm64/boot/dts/qcom/glymur-crd.dtsi index b314c6dd423c..2e41b4ec83a5 100644 --- a/arch/arm64/boot/dts/qcom/glymur-crd.dtsi +++ b/arch/arm64/boot/dts/qcom/glymur-crd.dtsi @@ -373,7 +373,7 @@ vreg_l1b_e0_1p8: ldo1 { vreg_l2b_e0_2p9: ldo2 { regulator-name = "vreg_l2b_e0_2p9"; - regulator-min-microvolt = <2904000>; + regulator-min-microvolt = <1804000>; regulator-max-microvolt = <2904000>; regulator-initial-mode = ; }; @@ -392,10 +392,10 @@ vreg_l8b_e0_1p50: ldo8 { regulator-initial-mode = ; }; - vreg_l9b_e0_2p7: ldo9 { - regulator-name = "vreg_l9b_e0_2p7"; - regulator-min-microvolt = <2704000>; - regulator-max-microvolt = <2704000>; + vreg_l9b_e0_2p9: ldo9 { + regulator-name = "vreg_l9b_e0_2p9"; + regulator-min-microvolt = <2960000>; + regulator-max-microvolt = <2960000>; regulator-initial-mode = ; }; -- 2.34.1