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[103.229.18.19]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3339aa33e96sm10170457eec.12.2026.09.04.18.30.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Sep 2026 18:30:29 -0700 (PDT) From: Vishnu Saini Date: Sat, 05 Sep 2026 07:00:15 +0530 Subject: [PATCH v3 1/3] arm64: dts: qcom: lemans-evk: Add LVDS display overlay Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260905-lvds-support-v3-1-b40a1b03f63c@oss.qualcomm.com> References: <20260905-lvds-support-v3-0-b40a1b03f63c@oss.qualcomm.com> In-Reply-To: <20260905-lvds-support-v3-0-b40a1b03f63c@oss.qualcomm.com> To: Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Vishnu Saini , venkata.valluru@oss.qualcomm.com, Jessica Zhang X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1788571821; l=4286; i=vishnu.saini@oss.qualcomm.com; s=20251113; h=from:subject:message-id; bh=EP4wlhd1hff0Y5G3evRfbFP30T5A4yZx5Fq/svMeQP4=; b=U3Aillio6qxZoQH0zLL3Cx2FL0BYeCo6V5ypn8+nTZsCRAI1ApCr6J+QjPpe5Kd5fKzzG09lU 7gHnz7YolAbBWbb/kS+e4C7sm2/udI+RMAlXSXYac0QktLSiqxlciAI X-Developer-Key: i=vishnu.saini@oss.qualcomm.com; a=ed25519; pk=8hlXlF8j/3GeOaDK3w2LYhkv9FanCQru0c7kRH/It7k= X-Authority-Analysis: v=2.4 cv=F61nsKhN c=1 sm=1 tr=0 ts=6a9b70b7 cx=c_pps a=RP+M6JBNLl+fLTcSJhASfg==:117 a=Ou0eQOY4+eZoSc0qltEV5Q==:17 a=IkcTkHD0fZMA:10 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=rJkE3RaqiGZ5pbrm-msn:22 a=EUspDBNiAAAA:8 a=XDEuxvGYp64Eb9E-atsA:9 a=QEXdDO2ut3YA:10 a=iS9zxrgQBfv6-_F4QbHw:22 X-Proofpoint-Spam-Info: AW1haW4tMjYwOTA1MDAxMSBTYWx0ZWRfX/EbTqE8XTdVa QwuzRWZUMRdLVPeYr8GiIjWqoEd5MKzGIW7B/rso68cQ0S2jzMXBl0t1SQqyxxSrp+mX6SaT5NT 1k9OyjPSjJ9a+jLcNodDrO07Fdf1RSg= X-Proofpoint-ORIG-GUID: -z8QHJDeCYGatehatG94YWBMeZOPS75G X-Proofpoint-GUID: -z8QHJDeCYGatehatG94YWBMeZOPS75G X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTA1MDAxMSBTYWx0ZWRfX6miTIaPalbQ6 hU9tBilhEQO+gpKzJSpIKy2Gwst5fUXj9ngfGD39T2pHAFRy98x5xTfyO2o1GwuNPZpQnqemdan MWiFfXUsDJ1UkfZxrVuT7PDEGv1IJlbu4MlWRPHBSxb7waYaLW7C3HI16foVEa5vVwaAfbwdXKE TTQSM382Q3SyYEs1w8UJxRGaAbpIQYJkcVVndeBSjV/Md2a3SN2nekOGiwBpcpo2u2kHSIAvxwO 9yAZ54nCY/BYU7K+fqvIai6ofRIS1ovbXfK/oEGvQR9e46entrmGTgFheCZObR7d4wlGTE1f+Je AyGqbY1Sb/mzHlgeiqCkV3sriYW7TqCC5LJJbMb4CvMPrsRQ/drOB0y6D55CFQF+N7T8qr61Jvw l0iKZYYZLmmWedAEmPF5nF7vW2OK/MfHg4d0KlISCtzZZ00zGFMFBgIpsB7ViimnaceY0GHBEmC 6zadkjH2RppocJDwrLA== 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=2026-09-05_01,2026-09-03_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 adultscore=0 priorityscore=1501 phishscore=0 impostorscore=0 bulkscore=0 suspectscore=0 clxscore=1015 malwarescore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2609050011 The Lemans EVK IFP mezzanine supports LVDS display output using the Lontium LT9211C DSI-to-LVDS bridge. The bridge is connected to the DSI0 output and drives a dual-channel 1920x1080 LVDS panel in VESA-24 mapping. Add a DTBO overlay, lemans-evk-lvds-boe,dv215fhm-r01.dtso, that wires up the LT9211C bridge on I2C1 (address 0x2d) with reset on GPIO37, a panel-lvds node for the boe,dv215fhm-r01 panel (matched against the panel-simple-lvds-dual-ports binding, which supplies the panel's size and timing internally), and an LCD display bias regulator supplied through the GPIO expander. DSI power is provided by vreg_s4a. The overlay is built as a composite DTB combining the base lemans-evk.dtb, the IFP mezzanine overlay, and this LVDS overlay. Signed-off-by: Vishnu Saini --- arch/arm64/boot/dts/qcom/Makefile | 4 + .../dts/qcom/lemans-evk-lvds-boe,dv215fhm-r01.dtso | 113 +++++++++++++++++++++ 2 files changed, 117 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile index 6c2ac11133ca..6c119fd77774 100644 --- a/arch/arm64/boot/dts/qcom/Makefile +++ b/arch/arm64/boot/dts/qcom/Makefile @@ -58,6 +58,10 @@ lemans-evk-el2-dtbs := lemans-evk.dtb lemans-el2.dtbo dtb-$(CONFIG_ARCH_QCOM) += lemans-evk-el2.dtb lemans-evk-ifp-mezzanine-dtbs := lemans-evk.dtb lemans-evk-ifp-mezzanine.dtbo dtb-$(CONFIG_ARCH_QCOM) += lemans-evk-ifp-mezzanine.dtb + +lemans-evk-lvds-boe,dv215fhm-r01-dtbs := lemans-evk.dtb lemans-evk-ifp-mezzanine.dtbo lemans-evk-lvds-boe,dv215fhm-r01.dtbo +dtb-$(CONFIG_ARCH_QCOM) += lemans-evk-lvds-boe,dv215fhm-r01.dtb + dtb-$(CONFIG_ARCH_QCOM) += mahua-crd.dtb dtb-$(CONFIG_ARCH_QCOM) += milos-fairphone-fp6.dtb dtb-$(CONFIG_ARCH_QCOM) += milos-nothing-asteroids.dtb diff --git a/arch/arm64/boot/dts/qcom/lemans-evk-lvds-boe,dv215fhm-r01.dtso b/arch/arm64/boot/dts/qcom/lemans-evk-lvds-boe,dv215fhm-r01.dtso new file mode 100644 index 000000000000..bd3e13c46a1e --- /dev/null +++ b/arch/arm64/boot/dts/qcom/lemans-evk-lvds-boe,dv215fhm-r01.dtso @@ -0,0 +1,113 @@ +// SPDX-License-Identifier: BSD-3-Clause +/* + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. + */ + +/dts-v1/; +/plugin/; + +#include + +&{/} { + model = "Qualcomm Technologies, Inc. Lemans EVK LVDS"; + + panel_lvds: panel-lvds { + compatible = "boe,dv215fhm-r01"; + power-supply = <&lcd_disp_bias>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + dual-lvds-odd-pixels; + + panel_in_lvds_odd: endpoint { + remote-endpoint = <<9211c_out_odd>; + }; + }; + + port@1 { + reg = <1>; + dual-lvds-even-pixels; + + panel_in_lvds_even: endpoint { + remote-endpoint = <<9211c_out_even>; + }; + }; + }; + }; + + lcd_disp_bias: regulator-lcd-disp-bias { + compatible = "regulator-fixed"; + regulator-name = "lcd_disp_bias"; + regulator-min-microvolt = <5500000>; + regulator-max-microvolt = <5500000>; + gpio = <&expander3 1 GPIO_ACTIVE_HIGH>; + enable-active-high; + }; +}; + +&i2c1 { + #address-cells = <1>; + #size-cells = <0>; + pinctrl-names = "default"; + pinctrl-0 = <&qup_i2c1_default>; + + status = "okay"; + + lt9211c_codec: lvds-bridge@2d { + compatible = "lontium,lt9211c"; + reg = <0x2d>; + reset-gpios = <&tlmm 37 GPIO_ACTIVE_HIGH>; + vccio-supply = <&vreg_s4a>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + lt9211c_in: endpoint { + data-lanes = <1 2 3 4>; + remote-endpoint = <&mdss0_dsi0_out>; + }; + }; + + port@2 { + reg = <2>; + + lt9211c_out_odd: endpoint { + remote-endpoint = <&panel_in_lvds_odd>; + }; + }; + + port@3 { + reg = <3>; + + lt9211c_out_even: endpoint { + remote-endpoint = <&panel_in_lvds_even>; + }; + }; + }; + }; +}; + +&mdss0_dsi0 { + vdda-supply = <&vreg_l1c>; + + status = "okay"; +}; + +&mdss0_dsi0_out { + data-lanes = <0 1 2 3>; + remote-endpoint = <<9211c_in>; +}; + +&mdss0_dsi0_phy { + vdds-supply = <&vreg_l4a>; + + status = "okay"; +}; -- 2.34.1