[PATCH v3] arm64: dts: ti: am62-phyboard-lyra: Add DT overlay for Lincoln LCD185-101CT panel

[PATCH v3] arm64: dts: ti: am62-phyboard-lyra: Add DT overlay for Lincoln LCD185-101CT panel

[Wadim Egorov]

The panel is a Lincoln Technology Solutions LCD185-101CT [0]. It is
a dual-link LVDS panel and supports WUXGA resolution (1920x1200).
Furthermore, it has an I2C based touch controller: Goodix-GT928.

Add an device tree overlay to support the Lincoln LCD185-101CT panel
in combination with the phyBOARD-Lyra-AM62x.

[0] https://lincolntechsolutions.com/wp-content/uploads/2024/09/LCD185-101CTL1ARNTT_DS_R1.3.pdf

Signed-off-by: Wadim Egorov <w.egorov@phytec.de>
---
I somehow managed to send out 2 v2s. And the last one came from an
internal tree which was tested on older Kernel. Sorry for that.

v1: https://lists.infradead.org/pipermail/linux-arm-kernel/2025-September/1065767.html
v2: https://lkml.org/lkml/2025/9/25/644 / https://www.spinics.net/lists/kernel/msg6075571.html
v3:
  - Fixed all schema warnings
  - Updated properties order in nodes
---
 arch/arm64/boot/dts/ti/Makefile               |   4 +
 .../ti/k3-am62-phyboard-lyra-oldi-lcd185.dtso | 185 ++++++++++++++++++
 2 files changed, 189 insertions(+)
 create mode 100644 arch/arm64/boot/dts/ti/k3-am62-phyboard-lyra-oldi-lcd185.dtso

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 5269c9619b65..6aaa4a2a7561 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -29,6 +29,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-zinnia.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am62x-phyboard-lyra-gpio-fan.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-am62-lp-sk.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am62-lp-sk-nand.dtbo
+dtb-$(CONFIG_ARCH_K3) += k3-am62-phyboard-lyra-oldi-lcd185.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-am62-pocketbeagle2.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am6254atl-sk.dtb
 
@@ -183,6 +184,8 @@ k3-am625-phyboard-lyra-disable-spi-nor-dtbs := k3-am625-phyboard-lyra-rdk.dtb \
 	k3-am6xx-phycore-disable-spi-nor.dtbo
 k3-am625-phyboard-lyra-gpio-fan-dtbs := k3-am625-phyboard-lyra-rdk.dtb \
 	k3-am62x-phyboard-lyra-gpio-fan.dtbo
+k3-am625-phyboard-lyra-oldi-lcd185-dtbs := k3-am625-phyboard-lyra-rdk.dtb \
+	k3-am62-phyboard-lyra-oldi-lcd185.dtbo
 k3-am625-phyboard-lyra-qspi-nor-dtbs := k3-am625-phyboard-lyra-rdk.dtb \
 	k3-am6xx-phycore-qspi-nor.dtbo
 k3-am625-sk-csi2-imx219-dtbs := k3-am625-sk.dtb \
@@ -287,6 +290,7 @@ dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \
 	k3-am625-phyboard-lyra-disable-rtc.dtb \
 	k3-am625-phyboard-lyra-disable-spi-nor.dtb \
 	k3-am625-phyboard-lyra-gpio-fan.dtb \
+	k3-am625-phyboard-lyra-oldi-lcd185.dtb \
 	k3-am625-phyboard-lyra-qspi-nor.dtb \
 	k3-am625-sk-csi2-imx219.dtb \
 	k3-am625-sk-csi2-ov5640.dtb \
diff --git a/arch/arm64/boot/dts/ti/k3-am62-phyboard-lyra-oldi-lcd185.dtso b/arch/arm64/boot/dts/ti/k3-am62-phyboard-lyra-oldi-lcd185.dtso
new file mode 100644
index 000000000000..ec1187d3b845
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am62-phyboard-lyra-oldi-lcd185.dtso
@@ -0,0 +1,185 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * Copyright (C) 2022-2026 PHYTEC Messtechnik GmbH
+ * Author: Wadim Egorov <w.egorov@phytec.de>
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/pwm/pwm.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include "k3-pinctrl.h"
+
+&{/} {
+	display {
+		compatible = "lincolntech,lcd185-101ct";
+		backlight = <&backlight>;
+		power-supply = <&vdd_usb_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>;
+				};
+			};
+		};
+	};
+
+	backlight: backlight {
+		compatible = "pwm-backlight";
+		brightness-levels = <0 4 8 16 32 64 128 255>;
+		default-brightness-level = <6>;
+		enable-gpios = <&gpio_exp 5 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&bl_pwm_pins_default>;
+		pwms = <&epwm0 1 50000 0>;
+	};
+
+	vdd_usb_5v0: regulator-vdd-usb5v0 {
+		compatible = "regulator-fixed";
+		regulator-name = "vdd-usb5v0";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-always-on;
+		regulator-boot-on;
+	};
+};
+
+&dss {
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_oldi0_pins_default &main_dss0_pins_default>;
+};
+
+&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>;
+		};
+	};
+};
+
+&epwm0 {
+	status = "okay";
+};
+
+&main_i2c1 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	touchscreen@5d {
+		compatible = "goodix,gt928";
+		reg = <0x5d>;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&touch_screen_pins_default>;
+
+		interrupt-parent = <&main_gpio0>;
+		interrupts = <19 IRQ_TYPE_LEVEL_LOW>;
+
+		reset-gpios = <&main_gpio0 18 GPIO_ACTIVE_HIGH>;
+		irq-gpios = <&main_gpio0 19 GPIO_ACTIVE_HIGH>;
+	};
+};
+
+&main_pmx0 {
+	bl_pwm_pins_default: bl-pwm-default-pins {
+		pinctrl-single,pins = <
+			AM62X_IOPAD(0x01b8, PIN_INPUT, 2) /* (C13) SPI0_CS1.EHRPWM0_B */
+		>;
+	};
+
+	touch_screen_pins_default: touch-screen-default-pins {
+		pinctrl-single,pins = <
+			AM62X_IOPAD(0x048, PIN_OUTPUT, 7) /* (N25) GPMC0_AD3.GPIO0_18 - RST */
+			AM62X_IOPAD(0x04c, PIN_INPUT, 7) /* (P24) GPMC0_AD4.GPIO0_19 - INT */
+		>;
+	};
+
+	main_oldi0_pins_default: main-oldi0-default-pins {
+		pinctrl-single,pins = <
+			AM62X_IOPAD(0x0260, PIN_OUTPUT, 0) /* (AA5) OLDI0_A0N */
+			AM62X_IOPAD(0x025c, PIN_OUTPUT, 0) /* (Y6) OLDI0_A0P */
+			AM62X_IOPAD(0x0268, PIN_OUTPUT, 0) /* (AD3) OLDI0_A1N */
+			AM62X_IOPAD(0x0264, PIN_OUTPUT, 0) /* (AB4) OLDI0_A1P */
+			AM62X_IOPAD(0x0270, PIN_OUTPUT, 0) /* (Y8) OLDI0_A2N */
+			AM62X_IOPAD(0x026c, PIN_OUTPUT, 0) /* (AA8) OLDI0_A2P */
+			AM62X_IOPAD(0x0278, PIN_OUTPUT, 0) /* (AB6) OLDI0_A3N */
+			AM62X_IOPAD(0x0274, PIN_OUTPUT, 0) /* (AA7) OLDI0_A3P */
+			AM62X_IOPAD(0x0280, PIN_OUTPUT, 0) /* (AC6) OLDI0_A4N */
+			AM62X_IOPAD(0x027c, PIN_OUTPUT, 0) /* (AC5) OLDI0_A4P */
+			AM62X_IOPAD(0x0288, PIN_OUTPUT, 0) /* (AE5) OLDI0_A5N */
+			AM62X_IOPAD(0x0284, PIN_OUTPUT, 0) /* (AD6) OLDI0_A5P */
+			AM62X_IOPAD(0x0290, PIN_OUTPUT, 0) /* (AE6) OLDI0_A6N */
+			AM62X_IOPAD(0x028c, PIN_OUTPUT, 0) /* (AD7) OLDI0_A6P */
+			AM62X_IOPAD(0x0298, PIN_OUTPUT, 0) /* (AD8) OLDI0_A7N */
+			AM62X_IOPAD(0x0294, PIN_OUTPUT, 0) /* (AE7) OLDI0_A7P */
+			AM62X_IOPAD(0x02a0, PIN_OUTPUT, 0) /* (AD4) OLDI0_CLK0N */
+			AM62X_IOPAD(0x029c, PIN_OUTPUT, 0) /* (AE3) OLDI0_CLK0P */
+			AM62X_IOPAD(0x02a8, PIN_OUTPUT, 0) /* (AE4) OLDI0_CLK1N */
+			AM62X_IOPAD(0x02a4, PIN_OUTPUT, 0) /* (AD5) OLDI0_CLK1P */
+		>;
+	};
+};
+
+&oldi0 {
+	ti,companion-oldi = <&oldi1>;
+	status = "okay";
+};
+
+&oldi0_port0 {
+	oldi_0_in: endpoint {
+		remote-endpoint = <&dpi0_out0>;
+	};
+};
+
+&oldi0_port1 {
+	oldi_0_out: endpoint {
+		remote-endpoint = <&lcd_in0>;
+	};
+};
+
+&oldi1 {
+	ti,secondary-oldi;
+	status = "okay";
+};
+
+&oldi1_port0 {
+	oldi_1_in: endpoint {
+		remote-endpoint = <&dpi0_out1>;
+	};
+};
+
+&oldi1_port1 {
+	oldi_1_out: endpoint {
+		remote-endpoint = <&lcd_in1>;
+	};
+};
-- 
2.43.0

Re: [PATCH v3] arm64: dts: ti: am62-phyboard-lyra: Add DT overlay for Lincoln LCD185-101CT panel

[Nishanth Menon]

Hi Wadim Egorov,

On Thu, 30 Apr 2026 15:01:15 +0200, Wadim Egorov wrote:
> The panel is a Lincoln Technology Solutions LCD185-101CT [0]. It is
> a dual-link LVDS panel and supports WUXGA resolution (1920x1200).
> Furthermore, it has an I2C based touch controller: Goodix-GT928.
> 
> Add an device tree overlay to support the Lincoln LCD185-101CT panel
> in combination with the phyBOARD-Lyra-AM62x.
> 
> [...]

I have applied the following to branch ti-k3-dts-next on [1]. I did
some minor cleanup, do check and let me know if it does'nt work. Thank you!

[1/1] arm64: dts: ti: am62-phyboard-lyra: Add DT overlay for Lincoln LCD185-101CT panel
      commit: 79c18f417a18c3211d815d6ec5b3239d74d951ea

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent up the chain during
the next merge window (or sooner if it is a relevant bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/ti/linux.git
-- 
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D
https://ti.com/opensource