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Message-ID: <20250924143916.2023919-3-w.egorov@phytec.de>
Date: Wed, 24 Sep 2025 16:39:16 +0200
From: Wadim Egorov <w.egorov@...tec.de>
To: <nm@...com>, <vigneshr@...com>, <kristo@...nel.org>, <robh@...nel.org>,
<krzk+dt@...nel.org>, <conor+dt@...nel.org>, <aradhya.bhatia@...ux.dev>
CC: <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <upstream@...ts.phytec.de>
Subject: [PATCH 3/3] arm64: dts: ti: am625-phyboard-lyra: Add Lincoln LCD185-101CT panel overlay
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@...tec.de>
---
arch/arm64/boot/dts/ti/Makefile | 3 +
.../k3-am625-phyboard-lyra-oldi-lcd185.dtso | 202 ++++++++++++++++++
2 files changed, 205 insertions(+)
create mode 100644 arch/arm64/boot/dts/ti/k3-am625-phyboard-lyra-oldi-lcd185.dtso
diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index aad9177930e6..aa34a0d77615 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -13,6 +13,7 @@ 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-phyboard-lyra-rdk.dtb
+dtb-$(CONFIG_ARCH_K3) += k3-am652-phyboard-lyra-oldi-lcd185.dtbo
dtb-$(CONFIG_ARCH_K3) += k3-am625-sk.dtb
dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-nonwifi-dahlia.dtb
dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-nonwifi-dev.dtb
@@ -165,6 +166,8 @@ k3-am625-phyboard-lyra-gpio-fan-dtbs := k3-am625-phyboard-lyra-rdk.dtb \
k3-am62x-phyboard-lyra-gpio-fan.dtbo
k3-am625-phyboard-lyra-qspi-nor-dtbs := k3-am625-phyboard-lyra-rdk.dtb \
k3-am6xx-phycore-qspi-nor.dtbo
+k3-am625-phyboard-lyra-oldi-lcd185-dtbs := k3-am625-phyboard-lyra-rdk.dtb \
+ k3-am625-phyboard-lyra-oldi-lcd185.dtbo
k3-am625-sk-csi2-imx219-dtbs := k3-am625-sk.dtb \
k3-am62x-sk-csi2-imx219.dtbo
k3-am625-sk-csi2-ov5640-dtbs := k3-am625-sk.dtb \
diff --git a/arch/arm64/boot/dts/ti/k3-am625-phyboard-lyra-oldi-lcd185.dtso b/arch/arm64/boot/dts/ti/k3-am625-phyboard-lyra-oldi-lcd185.dtso
new file mode 100644
index 000000000000..8f8e0eddc748
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am625-phyboard-lyra-oldi-lcd185.dtso
@@ -0,0 +1,202 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2025 PHYTEC Messtechnik GmbH
+ * Author: Wadim Egorov <w.egorov@...tec.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 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&bl_pwm_pins_default>;
+
+ 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>;
+ 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";
+};
+
+&oldi1 {
+ ti,secondary-oldi;
+ status = "okay";
+};
+
+&oldi0_ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ oldi_0_in: endpoint {
+ remote-endpoint = <&dpi0_out0>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+ oldi_0_out: endpoint {
+ remote-endpoint = <&lcd_in0>;
+ };
+ };
+};
+
+&oldi1_ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ oldi_1_in: endpoint {
+ remote-endpoint = <&dpi0_out1>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+ oldi_1_out: endpoint {
+ remote-endpoint = <&lcd_in1>;
+ };
+ };
+};
--
2.48.1
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