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[103.229.18.19]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3931cd46309sm4300696a91.5.2026.08.13.10.33.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Aug 2026 10:33:38 -0700 (PDT) From: Vishnu Saini Date: Thu, 13 Aug 2026 23:03:22 +0530 Subject: [PATCH v2 3/3] arm64: dts: qcom: qcs6490-rb3gen2: Add LVDS display overlay 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: 7bit Message-Id: <20260813-lvds-support-v2-3-6b11035e8ab0@oss.qualcomm.com> References: <20260813-lvds-support-v2-0-6b11035e8ab0@oss.qualcomm.com> In-Reply-To: <20260813-lvds-support-v2-0-6b11035e8ab0@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=1786642403; l=4397; i=vishnu.saini@oss.qualcomm.com; s=20251113; h=from:subject:message-id; bh=ozr6jJHNW4AQjukXGrFSF3vNo012BbJj6dwNTaMFLo4=; b=aIKL02GPeoRi4mjHZAdRbyTslIxfR8VgK0skfcnLy37LNCONZXv95QC24bFIVxIP/POAr/WT2 UJbCOHp6mUIB//PbX8r9QmfzU0e6fXO8T1sJcAKtsq8OoT/EUTqxWfH X-Developer-Key: i=vishnu.saini@oss.qualcomm.com; a=ed25519; pk=8hlXlF8j/3GeOaDK3w2LYhkv9FanCQru0c7kRH/It7k= X-Authority-Analysis: v=2.4 cv=ZcQt8MVA c=1 sm=1 tr=0 ts=6a7dfff4 cx=c_pps a=0uOsjrqzRL749jD1oC5vDA==:117 a=Ou0eQOY4+eZoSc0qltEV5Q==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=DJpcGTmdVt4CTyJn9g5Z:22 a=EUspDBNiAAAA:8 a=iyE8_RcjCA9vqETsuM8A:9 a=QEXdDO2ut3YA:10 a=mQ_c8vxmzFEMiUWkPHU9:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODEzMDEyNiBTYWx0ZWRfXxWrGi5AakqUh WaymI2rg+QMBtQk5y3YRrABl0gSz3LUsUtMv/p+K/BDeBXvGO0mIRO6tCmvqRbFeOl6cWzkLeYt OUXkdT9QKHGZ+yBqfJdd3jLBoE7U9H+EGEYEfYkdrxZyFlX9XFEtDLlIhmaC2xEDYjFpEEPXtGa 61DM0NobBKg1Q0rCGmtltuIfO6RTG0oJJxCnsBKFI1RAJ1s9NBV/lKmIbsok15PaEmWn+Gl8Rv4 rUHl0vTXqGQJo4VuL/rPb2JFBXz4+DiWFaobFb3qJaQZDCjmvznzN+YyO3KYxkttsWPlUggtD6e pZJiOwg+YvrMPEhaDQGjuDkEikD3mXT4pSFQVk06nTfZNvrACFwBe4AA3E9D9oMOCWL/vA2/dVx Dr9YiG50cuaeiPxJv45lbsWdqbTjK/0Am0CBYE/hBEuKaGyVzOFtzTub+kMlWht8TXg3TwcEYU2 22gqXmC+fM/nDOLhuxQ== X-Proofpoint-ORIG-GUID: 28-24P8x1biJk9LjDKgQcqQK39Fcjrvg X-Proofpoint-Spam-Info: AW1haW4tMjYwODEzMDEyNiBTYWx0ZWRfX5HZvCuuSgcyX nGwFW/9Br8vYVkLLhxpvYhEWbkdICC2H1r73Lf2+4rkUWMW0K0bEuRKNxzIxOB4rrnoQXoF56II /VoMmfZH2RK6jbPjl4Cv9ZPS0dTNmAA= X-Proofpoint-GUID: 28-24P8x1biJk9LjDKgQcqQK39Fcjrvg 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=2026-08-13_05,2026-08-12_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 impostorscore=0 phishscore=0 malwarescore=0 suspectscore=0 adultscore=0 bulkscore=0 priorityscore=1501 spamscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608130126 The QCS6490 RB3 Gen2 industrial mezzanine supports LVDS display output using the Lontium LT9211C DSI-to-LVDS bridge as an alternative to the default HDMI output via the LT9611UXC bridge. Add a DTBO overlay, qcs6490-rb3gen2-industrial-mezzanine-lvds-boe,dv215fhm-r01.dtso, that disables HDMI (hdmi-connector and lt9611_codec) and wires up the LT9211C bridge on I2C1 (address 0x29) with reset on GPIO117. The overlay adds a dual-channel 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. The overlay is built as a composite DTB combining the base qcs6490-rb3gen2.dtb, the industrial mezzanine overlay, and this LVDS overlay. Signed-off-by: Vishnu Saini --- arch/arm64/boot/dts/qcom/Makefile | 6 ++ ...industrial-mezzanine-lvds-boe,dv215fhm-r01.dtso | 105 +++++++++++++++++++++ 2 files changed, 111 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile index 85ee28d8f109..8b147cbc0e1e 100644 --- a/arch/arm64/boot/dts/qcom/Makefile +++ b/arch/arm64/boot/dts/qcom/Makefile @@ -189,6 +189,12 @@ qcs6490-rb3gen2-vision-mezzanine-dtbs := qcs6490-rb3gen2.dtb qcs6490-rb3gen2-vis qcs6490-rb3gen2-industrial-mezzanine-dtbs := qcs6490-rb3gen2.dtb qcs6490-rb3gen2-industrial-mezzanine.dtbo dtb-$(CONFIG_ARCH_QCOM) += qcs6490-rb3gen2-industrial-mezzanine.dtb + +qcs6490-rb3gen2-industrial-mezzanine-lvds-boe,dv215fhm-r01-dtbs := \ + qcs6490-rb3gen2.dtb qcs6490-rb3gen2-industrial-mezzanine.dtbo \ + qcs6490-rb3gen2-industrial-mezzanine-lvds-boe,dv215fhm-r01.dtbo +dtb-$(CONFIG_ARCH_QCOM) += qcs6490-rb3gen2-industrial-mezzanine-lvds-boe,dv215fhm-r01.dtb + dtb-$(CONFIG_ARCH_QCOM) += qcs6490-rb3gen2-vision-mezzanine.dtb dtb-$(CONFIG_ARCH_QCOM) += qcs6490-thundercomm-minipc-g1iot.dtb dtb-$(CONFIG_ARCH_QCOM) += qcs6490-thundercomm-rubikpi3.dtb diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2-industrial-mezzanine-lvds-boe,dv215fhm-r01.dtso b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2-industrial-mezzanine-lvds-boe,dv215fhm-r01.dtso new file mode 100644 index 000000000000..8e60b8631169 --- /dev/null +++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2-industrial-mezzanine-lvds-boe,dv215fhm-r01.dtso @@ -0,0 +1,105 @@ +// SPDX-License-Identifier: BSD-3-Clause +/* + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. + */ + +/dts-v1/; +/plugin/; + +#include + +&{/} { + model = "Qualcomm Technologies, Inc. Industrial RB3gen2 LVDS"; + + hdmi-connector { + status = "disabled"; + }; + + panel_lvds: panel-lvds { + compatible = "boe,dv215fhm-r01"; + power-supply = <&lcd_disp_bias>; + + status = "okay"; + + 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>; + vin-supply = <&vreg_l18b_1p8>; + }; +}; + +&i2c1 { + #address-cells = <1>; + #size-cells = <0>; + + status = "okay"; + + lvds_bridge: lvds-bridge@29 { + compatible = "lontium,lt9211c"; + reg = <0x29>; + reset-gpios = <&tlmm 117 GPIO_ACTIVE_HIGH>; + vccio-supply = <&vreg_l18b_1p8>; + + status = "okay"; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + lt9211c_in: endpoint { + data-lanes = <1 2 3 4>; + remote-endpoint = <&mdss_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>; + }; + }; + }; + }; +}; + +<9611_codec { + status = "disabled"; +}; + +&mdss_dsi0_out { + remote-endpoint = <<9211c_in>; +}; + -- 2.34.1