[PATCH v1 0/2] dt-bindings: display: panel: Add LG LP156WF1 dual-LVDS panel

[PATCH v1 0/2] dt-bindings: display: panel: Add LG LP156WF1 dual-LVDS panel

[Vitor Soares]

From: Vitor Soares <vitor.soares@toradex.com>

Add support for the LG LP156WF1 15.6" Full-HD dual-link LVDS panel and
a Verdin AM62 overlay for using it through the Verdin Development Board
with the Verdin AM62 Mezzanine LVDS interface.

This is a follow-up to an earlier attempt [1], where panel-lvds.yaml
was incorrectly extended to describe dual-link panels. Back in 2023,
when a generic dual-channel LVDS binding was proposed, Rob Herring [2]
pointed out that dual-link panels should follow the existing
advantech,idk-2121wr pattern instead of introducing a new generic
compatible.

Following that approach, this series adds a dedicated binding for
lg,lp156wf1, with the dual-link LVDS ports described by
lvds-dual-ports.yaml, and excludes it from the generic panel-lvds
schema selection.
The second patch adds the Verdin AM62 overlay for the LG LP156WF1 panel
on the Mezzanine LVDS connector.

This series should be applied on top of [3] to avoid conflicts in the TI
device-tree Makefile with the other overlay additions.

[1] https://lore.kernel.org/all/20260521150038.103538-17-ivitro@gmail.com/
[2] https://lore.kernel.org/all/20230130170441.GA2796575-robh@kernel.org/
[3] https://lore.kernel.org/all/20260522161105.277519-13-ivitro@gmail.com/

Vitor Soares (2):
  dt-bindings: display: panel: Add LG LP156WF1
  arm64: dts: ti: k3-am62-verdin: Add Mezzanine with LG LP156WF1 LVDS
    panel

 .../bindings/display/panel/lg,lp156wf1.yaml   | 105 ++++++++++++++
 .../bindings/display/panel/panel-lvds.yaml    |   1 +
 arch/arm64/boot/dts/ti/Makefile               |   5 +
 ...verdin-dev-mezzanine-lvds-lg-lp156wf1.dtso | 131 ++++++++++++++++++
 4 files changed, 242 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/panel/lg,lp156wf1.yaml
 create mode 100644 arch/arm64/boot/dts/ti/k3-am625-verdin-dev-mezzanine-lvds-lg-lp156wf1.dtso

-- 
2.54.0

[PATCH v1 2/2] arm64: dts: ti: k3-am62-verdin: Add Mezzanine with LG LP156WF1 LVDS panel

[Vitor Soares]

From: Vitor Soares <vitor.soares@toradex.com>

Add a device tree overlay enabling the LG LP156WF1 15.6" FHD (1920x1080)
dual-channel LVDS panel on the Verdin Development Board with Verdin AM62
Mezzanine expansion board. The panel connects via the AM62 OLDI0 and
OLDI1 in dual-channel mode on the Mezzanine LVDS interface (J10).

Assisted-by: Claude:claude-sonnet-4.6
Signed-off-by: Vitor Soares <vitor.soares@toradex.com>
---
 arch/arm64/boot/dts/ti/Makefile               |   5 +
 ...verdin-dev-mezzanine-lvds-lg-lp156wf1.dtso | 131 ++++++++++++++++++
 2 files changed, 136 insertions(+)
 create mode 100644 arch/arm64/boot/dts/ti/k3-am625-verdin-dev-mezzanine-lvds-lg-lp156wf1.dtso

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 371f9a043fe5..e9951b5d2e0b 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -30,6 +30,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-am625-phyboard-lyra-rdk.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am625-sk.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am625-tqma62xx-mba62xx.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-dev-mezzanine-can.dtbo
+dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-dev-mezzanine-lvds-lg-lp156wf1.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-dev-mezzanine-panel-cap-touch-10inch-lvds.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-dev-nau8822-btl.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-dsi-to-hdmi.dtbo
@@ -232,6 +233,9 @@ k3-am625-verdin-wifi-dev-dsi-to-lvds-panel-cap-touch-10inch-dtbs := \
 	k3-am625-verdin-dsi-to-lvds-panel-cap-touch-10inch.dtbo
 k3-am625-verdin-wifi-dev-mezzanine-can-dtbs := k3-am625-verdin-wifi-dev.dtb \
 	k3-am625-verdin-dev-mezzanine-can.dtbo
+k3-am625-verdin-wifi-dev-mezzanine-lvds-lg-lp156wf1-dtbs := \
+	k3-am625-verdin-wifi-dev.dtb \
+	k3-am625-verdin-dev-mezzanine-lvds-lg-lp156wf1.dtbo
 k3-am625-verdin-wifi-dev-mezzanine-panel-cap-touch-10inch-lvds-dtbs := \
 	k3-am625-verdin-wifi-dev.dtb \
 	k3-am625-verdin-dev-mezzanine-panel-cap-touch-10inch-lvds.dtbo
@@ -352,6 +356,7 @@ dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \
 	k3-am625-sk-hdmi-audio.dtb \
 	k3-am625-verdin-wifi-dev-dsi-to-lvds-panel-cap-touch-10inch.dtb \
 	k3-am625-verdin-wifi-dev-mezzanine-can.dtb \
+	k3-am625-verdin-wifi-dev-mezzanine-lvds-lg-lp156wf1.dtb \
 	k3-am625-verdin-wifi-dev-mezzanine-panel-cap-touch-10inch-lvds.dtb \
 	k3-am625-verdin-wifi-dev-nau8822-btl.dtb \
 	k3-am625-verdin-wifi-dev-ov5640-24mhz.dtb \
diff --git a/arch/arm64/boot/dts/ti/k3-am625-verdin-dev-mezzanine-lvds-lg-lp156wf1.dtso b/arch/arm64/boot/dts/ti/k3-am625-verdin-dev-mezzanine-lvds-lg-lp156wf1.dtso
new file mode 100644
index 000000000000..bb4acc1edf35
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am625-verdin-dev-mezzanine-lvds-lg-lp156wf1.dtso
@@ -0,0 +1,131 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright (c) Toradex
+ *
+ * LG LP156WF1 dual-channel LVDS panel on Verdin AM62 Mezzanine
+ * LVDS interface (J10), used with the Verdin Development Board.
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pwm/pwm.h>
+
+&{/} {
+	backlight_pwm2: backlight-pwm2 {
+		compatible = "pwm-backlight";
+		brightness-levels = <0 45 63 88 119 158 203 255>;
+		default-brightness-level = <4>;
+		/* Verdin GPIO_4 (SODIMM 212) - LVDS_BKL_EN */
+		enable-gpios = <&mcu_gpio0 4 GPIO_ACTIVE_HIGH>;
+		/* Verdin PWM_2 (SODIMM 16) - LVDS_PWM */
+		pwms = <&epwm0 1 6666667 PWM_POLARITY_INVERTED>;
+	};
+
+	panel-lvds-native {
+		compatible = "lg,lp156wf1", "panel-lvds";
+		backlight = <&backlight_pwm2>;
+		data-mapping = "jeida-24";
+		height-mm = <194>;
+		width-mm = <345>;
+
+		panel-timing {
+			clock-frequency = <138500000>;
+			hactive = <1920>;
+			hback-porch = <40>;
+			hfront-porch = <24>;
+			hsync-len = <16>;
+			pixelclk-active = <0>;
+			vactive = <1080>;
+			vback-porch = <23>;
+			vfront-porch = <3>;
+			vsync-len = <5>;
+		};
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+				dual-lvds-odd-pixels;
+
+				panel_lvds_native_in0: endpoint {
+					remote-endpoint = <&oldi0_out>;
+				};
+			};
+
+			port@1 {
+				reg = <1>;
+				dual-lvds-even-pixels;
+
+				panel_lvds_native_in1: endpoint {
+					remote-endpoint = <&oldi1_out>;
+				};
+			};
+		};
+	};
+};
+
+&dss {
+	status = "okay";
+};
+
+&dss_ports {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	/* DSS VP1: internal DPI output to OLDIx */
+	port@0 {
+		reg = <0>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		dss0_out0: endpoint@0 {
+			reg = <0>;
+			remote-endpoint = <&oldi0_in>;
+		};
+
+		dss0_out1: endpoint@1 {
+			reg = <1>;
+			remote-endpoint = <&oldi1_in>;
+		};
+	};
+};
+
+&oldi0 {
+	ti,companion-oldi = <&oldi1>;
+
+	status = "okay";
+};
+
+&oldi0_port0 {
+	oldi0_in: endpoint {
+		remote-endpoint = <&dss0_out0>;
+	};
+};
+
+&oldi0_port1 {
+	oldi0_out: endpoint {
+		remote-endpoint = <&panel_lvds_native_in0>;
+	};
+};
+
+&oldi1 {
+	ti,secondary-oldi;
+
+	status = "okay";
+};
+
+&oldi1_port0 {
+	oldi1_in: endpoint {
+		remote-endpoint = <&dss0_out1>;
+	};
+};
+
+&oldi1_port1 {
+	oldi1_out: endpoint {
+		remote-endpoint = <&panel_lvds_native_in1>;
+	};
+};
-- 
2.54.0

Re: [PATCH v1 0/2] dt-bindings: display: panel: Add LG LP156WF1 dual-LVDS panel

[Francesco Dolcini]

On Fri, May 29, 2026 at 12:05:18PM +0100, Vitor Soares wrote:
> From: Vitor Soares <vitor.soares@toradex.com>
> 
> Add support for the LG LP156WF1 15.6" Full-HD dual-link LVDS panel and
> a Verdin AM62 overlay for using it through the Verdin Development Board
> with the Verdin AM62 Mezzanine LVDS interface.
> 
> This is a follow-up to an earlier attempt [1], where panel-lvds.yaml
> was incorrectly extended to describe dual-link panels. Back in 2023,
> when a generic dual-channel LVDS binding was proposed, Rob Herring [2]
> pointed out that dual-link panels should follow the existing
> advantech,idk-2121wr pattern instead of introducing a new generic
> compatible.

Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>