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Wed, 20 May 2026 21:06:35 -0500 Received: from a0512632.dhcp.ti.com (a0512632.dhcp.ti.com [172.24.233.20]) by lelvem-mr06.itg.ti.com (8.18.1/8.18.1) with ESMTP id 64L26UOE2630310; Wed, 20 May 2026 21:06:31 -0500 From: Swamil Jain To: , , , , , , CC: , , , , , , Subject: [PATCH v2] arm64: dts: ti: Add LincolnTech OLDI LCD-185 Overlay for AM625-BeaglePlay Date: Thu, 21 May 2026 07:36:30 +0530 Message-ID: <20260521020630.816220-1-s-jain1@ti.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-C2ProcessedOrg: 333ef613-75bf-4e12-a4b1-8e3623f5dcea X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL6PEPF00022573:EE_|SJ2PR10MB7013:EE_ X-MS-Office365-Filtering-Correlation-Id: 38ab1d09-c0b3-4458-f2f6-08deb6dd968b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|82310400026|36860700016|1800799024|3023799007|18002099003|56012099003|13003099007|6133799003; 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It is a Dual-Link LVDS panel and supports WUXGA resolution (1920x1200). Furthermore, it has an i2c based touch controller: Goodix-GT928. Add DT overlay for the OLDI panel to connect with BeaglePlay platform. [0]: https://lincolntechsolutions.com/wp-content/uploads/2024/09/LCD185-101CTL1ARNTT_DS_R1.3.pdf Signed-off-by: Aradhya Bhatia Signed-off-by: Swamil Jain --- Changelog: v1->v2: Move overlay-specific pinmux configurations from base device tree to k3-am625-beagleplay-lincolntech-lcd185-panel.dtso file. link to v1: https://lore.kernel.org/all/20260514225502.2327771-1-s-jain1@ti.com/ --- arch/arm64/boot/dts/ti/Makefile | 4 + ...5-beagleplay-lincolntech-lcd185-panel.dtso | 165 ++++++++++++++++++ 2 files changed, 169 insertions(+) create mode 100644 arch/arm64/boot/dts/ti/k3-am625-beagleplay-lincolntech-lcd185-panel.dtso diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile index 7642c06ca834..f0436a102fce 100644 --- a/arch/arm64/boot/dts/ti/Makefile +++ b/arch/arm64/boot/dts/ti/Makefile @@ -12,6 +12,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-am625-beagleplay.dtb dtb-$(CONFIG_ARCH_K3) += k3-am625-beagleplay-csi2-ov5640.dtbo dtb-$(CONFIG_ARCH_K3) += k3-am625-beagleplay-csi2-tevi-ov5640.dtbo +dtb-$(CONFIG_ARCH_K3) += k3-am625-beagleplay-lincolntech-lcd185-panel.dtbo dtb-$(CONFIG_ARCH_K3) += k3-am625-phyboard-lyra-rdk.dtb dtb-$(CONFIG_ARCH_K3) += k3-am625-sk.dtb dtb-$(CONFIG_ARCH_K3) += k3-am625-tqma62xx-mba62xx.dtb @@ -177,6 +178,8 @@ k3-am625-beagleplay-csi2-ov5640-dtbs := k3-am625-beagleplay.dtb \ k3-am625-beagleplay-csi2-ov5640.dtbo k3-am625-beagleplay-csi2-tevi-ov5640-dtbs := k3-am625-beagleplay.dtb \ k3-am625-beagleplay-csi2-tevi-ov5640.dtbo +k3-am625-beagleplay-lincolntech-lcd185-panel-dtbs := k3-am625-beagleplay.dtb \ + k3-am625-beagleplay-lincolntech-lcd185-panel.dtbo k3-am625-phyboard-lyra-disable-eth-phy-dtbs := k3-am625-phyboard-lyra-rdk.dtb \ k3-am6xx-phycore-disable-eth-phy.dtbo k3-am625-phyboard-lyra-disable-rtc-dtbs := k3-am625-phyboard-lyra-rdk.dtb \ @@ -287,6 +290,7 @@ k3-j784s4-evm-usxgmii-exp1-exp2-dtbs := k3-j784s4-evm.dtb \ k3-j784s4-evm-usxgmii-exp1-exp2.dtbo dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \ k3-am625-beagleplay-csi2-tevi-ov5640.dtb \ + k3-am625-beagleplay-lincolntech-lcd185-panel.dtb \ k3-am625-phyboard-lyra-disable-eth-phy.dtb \ k3-am625-phyboard-lyra-disable-rtc.dtb \ k3-am625-phyboard-lyra-disable-spi-nor.dtb \ diff --git a/arch/arm64/boot/dts/ti/k3-am625-beagleplay-lincolntech-lcd185-panel.dtso b/arch/arm64/boot/dts/ti/k3-am625-beagleplay-lincolntech-lcd185-panel.dtso new file mode 100644 index 000000000000..e7cadd48d439 --- /dev/null +++ b/arch/arm64/boot/dts/ti/k3-am625-beagleplay-lincolntech-lcd185-panel.dtso @@ -0,0 +1,165 @@ +// SPDX-License-Identifier: GPL-2.0-or-later OR MIT +/** + * Lincoln tech Solutions OLDI panel (LCD185-101CT) and touch DT overlay for AM625-BeaglePlay + * + * AM625-BeaglePlay: https://www.beagleboard.org/boards/beagleplay + * Panel datasheet: https://lincolntechsolutions.com/wp-content/uploads/2024/09/LCD185-101CTL1ARNTT_DS_R1.3.pdf + * + * Copyright (C) 2026 Texas Instruments Incorporated - http://www.ti.com/ + */ + +/dts-v1/; +/plugin/; + +#include +#include +#include "k3-pinctrl.h" + +&{/} { + backlight: backlight { + compatible = "pwm-backlight"; + pinctrl-names = "default"; + pinctrl-0 = <&backlight_pins_default>; + brightness-levels = <0 4 8 16 32 64 128 255>; + default-brightness-level = <6>; + enable-gpios = <&main_gpio0 0 GPIO_ACTIVE_HIGH>; + pwms = <&epwm0 1 20000 0>; + }; + + lcd { + compatible = "lincolntech,lcd185-101ct"; + backlight = <&backlight>; + /* + * Note that the OLDI TX 0 transmits the odd set of pixels + * while the OLDI TX 1 transmits the even set. This is a + * fixed configuration in the IP integration and is not + * changeable. The properties, "dual-lvds-odd-pixels" and + * "dual-lvds-even-pixels" have been used to merely + * identify if a Dual Link configuration is required. + * Swapping them will cause an error in the dss oldi driver. + */ + power-supply = <&vsys_5v0>; + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + dual-lvds-odd-pixels; + lcd_in0: endpoint { + remote-endpoint = <&oldi_0_out>; + }; + }; + port@1 { + reg = <1>; + dual-lvds-even-pixels; + lcd_in1: endpoint { + remote-endpoint = <&oldi_1_out>; + }; + }; + }; + }; +}; + +&main_pmx0 { + touchscreen_pins_default: touchscreen-default-pins { + pinctrl-single,pins = < + AM62X_IOPAD(0x01b4, PIN_OUTPUT, 7) /* (A13) SPI0_CS0.GPIO1_15 */ + AM62X_IOPAD(0x00a0, PIN_INPUT, 7) /* (K25) GPMC0_WPn.GPIO0_39 */ + >; + }; + + backlight_pins_default: bl-default-pins { + pinctrl-single,pins = < + AM62X_IOPAD(0x0000, PIN_OUTPUT, 7) /* (H24) OSPI0_CLK.GPIO0_0 */ + AM62X_IOPAD(0x01b8, PIN_OUTPUT, 2) /* (C13) SPI0_CS1.EHRPWM0_B */ + >; + }; +}; + +&dss { + status = "okay"; +}; + +&oldi0 { + status = "okay"; + ti,companion-oldi = <&oldi1>; +}; + +&oldi1 { + status = "okay"; + ti,secondary-oldi; + ti,companion-oldi = <&oldi0>; +}; + +&oldi0_port0 { + oldi_0_in: endpoint { + remote-endpoint = <&dpi0_out0>; + }; +}; + +&oldi0_port1 { + oldi_0_out: endpoint { + remote-endpoint = <&lcd_in0>; + }; +}; + +&oldi1_port0 { + oldi_1_in: endpoint { + remote-endpoint = <&dpi0_out1>; + }; +}; + +&oldi1_port1 { + oldi_1_out: endpoint { + remote-endpoint = <&lcd_in1>; + }; +}; + +&dss_ports { + #address-cells = <1>; + #size-cells = <0>; + + /* VP1: Output to OLDI */ + port@0 { + reg = <0>; + #address-cells = <1>; + #size-cells = <0>; + + dpi0_out0: endpoint@0 { + reg = <0>; + remote-endpoint = <&oldi_0_in>; + }; + dpi0_out1: endpoint@1 { + reg = <1>; + remote-endpoint = <&oldi_1_in>; + }; + }; +}; + +&main_i2c2 { + #address-cells = <1>; + #size-cells = <0>; + + eeprom@57 { + compatible = "atmel,24c256"; + reg = <0x57>; + }; + + touchscreen@5d { + compatible = "goodix,gt928"; + reg = <0x5d>; + pinctrl-names = "default"; + pinctrl-0 = <&touchscreen_pins_default>; + interrupt-parent = <&main_gpio0>; + interrupts = <39 IRQ_TYPE_EDGE_FALLING>; + irq-gpios = <&main_gpio0 39 GPIO_ACTIVE_HIGH>; + reset-gpios = <&main_gpio1 15 GPIO_ACTIVE_HIGH>; + touchscreen-size-x = <1920>; + touchscreen-size-y = <1200>; + }; +}; + +&epwm0 { + status = "okay"; +};