From: Swamil Jain <s-jain1@ti.com>
To: <nm@ti.com>, <vigneshr@ti.com>, <kristo@kernel.org>,
<robh@kernel.org>, <krzk+dt@kernel.org>, <conor+dt@kernel.org>,
<tomi.valkeinen@ideasonboard.com>
Cc: <r-sharma3@ti.com>, <devarsht@ti.com>, <praneeth@ti.com>,
<linux-arm-kernel@lists.infradead.org>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<s-jain1@ti.com>
Subject: [PATCH] arm64: dts: ti: Add LincolnTech OLDI LCD-185 Overlay for AM625-BeaglePlay
Date: Fri, 15 May 2026 04:25:02 +0530 [thread overview]
Message-ID: <20260514225502.2327771-1-s-jain1@ti.com> (raw)
From: Aradhya Bhatia <a-bhatia1@ti.com>
The panel is 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 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 <a-bhatia1@ti.com>
Signed-off-by: Swamil Jain <s-jain1@ti.com>
---
arch/arm64/boot/dts/ti/Makefile | 4 +
...5-beagleplay-lincolntech-lcd185-panel.dtso | 148 ++++++++++++++++++
.../arm64/boot/dts/ti/k3-am625-beagleplay.dts | 14 ++
3 files changed, 166 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..9ebfa9ab7a90
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am625-beagleplay-lincolntech-lcd185-panel.dtso
@@ -0,0 +1,148 @@
+// 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 <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.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>;
+ };
+ };
+ };
+ };
+};
+
+&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";
+};
diff --git a/arch/arm64/boot/dts/ti/k3-am625-beagleplay.dts b/arch/arm64/boot/dts/ti/k3-am625-beagleplay.dts
index c468b9c5fc09..dc5b7f6217ad 100644
--- a/arch/arm64/boot/dts/ti/k3-am625-beagleplay.dts
+++ b/arch/arm64/boot/dts/ti/k3-am625-beagleplay.dts
@@ -510,6 +510,20 @@ AM62X_IOPAD(0x0074, PIN_OUTPUT, 1) /* (U25) GPMC0_AD14.VOUT0_DATA22 */
AM62X_IOPAD(0x0078, PIN_OUTPUT, 1) /* (U24) GPMC0_AD15.VOUT0_DATA23 */
>;
};
+
+ 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 */
+ >;
+ };
};
&mcu_pmx0 {
reply other threads:[~2026-05-14 22:55 UTC|newest]
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