[PATCH 2/5] arm64: dts: freescale: imx8mp-toradex-smarc: Add Toradex Capacitive Touch Display 10.1" DSI

[Ernest Van Hoecke]

From: Ernest Van Hoecke <ernest.vanhoecke@xxxxxxxxxxx>

Add a device tree overlay for the Toradex Capacitive Touch Display
10.1" on the Toradex SMARC Development Board DSI connector. The display
features an internal Texas Instruments SN65DSI83 DSI-to-LVDS bridge
driving a Riverdi RVT101HVLNWC00 10.1" WXGA IPS TFT LCD panel. The touch
input is provided by an Ilitek ILI2132 capacitive touch controller.

The overlay is also combined with the SMARC Development Board device
tree to provide a ready-to-use DTB.

Link: https://developer.toradex.com/hardware/accessories/displays/capacitive-touch-display-101inch-dsi
Link: https://developer.toradex.com/hardware/accessories/add-ons/dsi-display-adapter
Signed-off-by: Ernest Van Hoecke <ernest.vanhoecke@xxxxxxxxxxx>
---
 arch/arm64/boot/dts/freescale/Makefile             |   4 +
 ...x-smarc-adapter-panel-cap-touch-10inch-dsi.dtso | 123 +++++++++++++++++++++
 2 files changed, 127 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index b5519fb36b5b..df697066e89c 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -709,6 +709,8 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mp-skov-revc-bd500.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-skov-revc-hdmi.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-skov-revc-tian-g07017.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-skov-revc-jutouch-jt101tm023.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-toradex-smarc-adapter-panel-cap-touch-10inch-dsi.dtbo
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-toradex-smarc-dev-adapter-panel-cap-touch-10inch-dsi.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-toradex-smarc-dev-dsi-to-hdmi.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-toradex-smarc-dev.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-toradex-smarc-dsi-to-hdmi.dtbo
@@ -716,6 +718,8 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mp-tqma8mpql-mba8mpxl.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-tqma8mpql-mba8mp-ras314.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-tqma8mpqs-mb-smarc-2.dtb
 
+imx8mp-toradex-smarc-dev-adapter-panel-cap-touch-10inch-dsi-dtbs := imx8mp-toradex-smarc-dev.dtb \
+	imx8mp-toradex-smarc-adapter-panel-cap-touch-10inch-dsi.dtbo
 imx8mp-toradex-smarc-dev-dsi-to-hdmi-dtbs := imx8mp-toradex-smarc-dev.dtb imx8mp-toradex-smarc-dsi-to-hdmi.dtbo
 
 imx8mp-tx8p-ml81-moduline-display-106-av101hdt-a10-dtbs += imx8mp-tx8p-ml81-moduline-display-106.dtb \
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-toradex-smarc-adapter-panel-cap-touch-10inch-dsi.dtso b/arch/arm64/boot/dts/freescale/imx8mp-toradex-smarc-adapter-panel-cap-touch-10inch-dsi.dtso
new file mode 100644
index 000000000000..170411a70523
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mp-toradex-smarc-adapter-panel-cap-touch-10inch-dsi.dtso
@@ -0,0 +1,123 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * Copyright (c) Toradex
+ *
+ * Toradex Capacitive Touch Display 10.1" DSI connected via Toradex SMARC
+ * Development Board DSI connector J44 through the Toradex DSI Display
+ * Adapter. Open J95 to select the carrier DSI route.
+ *
+ * https://developer.toradex.com/hardware/accessories/displays/capacitive-touch-display-101inch-dsi
+ * https://www.toradex.com/accessories/capacitive-touch-display-10.1-inch-dsi
+ * https://developer.toradex.com/hardware/accessories/add-ons/dsi-display-adapter
+ * https://www.toradex.com/accessories/verdin-dsi-display-adapter
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+&{/} {
+	backlight_lcd1: backlight-lcd1 {
+		compatible = "pwm-backlight";
+		brightness-levels = <0 45 63 88 119 158 203 255>;
+		default-brightness-level = <4>;
+		/* SMARC LCD1_BKLT_PWM (SMARC S122) */
+		pwms = <&pwm1 0 6666667 0>;
+	};
+
+	panel-lvds-bridge {
+		compatible = "riverdi,rvt101hvlnwc00", "panel-lvds";
+		backlight = <&backlight_lcd1>;
+		data-mapping = "vesa-24";
+		height-mm = <136>;
+		width-mm = <217>;
+
+		/*
+		 * Use a combined horizontal sync and back porch of 96 pixels. The
+		 * panel data sheet value of 88 pixels results in unstable display
+		 * output with the i.MX8M Plus DSI display pipeline.
+		 */
+		panel-timing {
+			clock-frequency = <69300000>;
+			de-active = <1>;
+			hactive = <1280>;
+			hback-porch = <64 64 64>;
+			hfront-porch = <72 72 72>;
+			hsync-active = <0>;
+			hsync-len = <32 32 32>;
+			pixelclk-active = <1>;
+			vactive = <800>;
+			vback-porch = <15 15 15>;
+			vfront-porch = <15 15 15>;
+			vsync-active = <0>;
+			vsync-len = <8 8 8>;
+		};
+
+		port {
+			panel_lvds_bridge_in: endpoint {
+				remote-endpoint = <&dsi_lvds_bridge_out>;
+			};
+		};
+	};
+};
+
+/* I2C on DSI Connector Pins 52/54 */
+&i2c_dsi_1 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	bridge@2c {
+		compatible = "ti,sn65dsi83";
+		reg = <0x2c>;
+		/* SMARC LCD1_BKLT_EN (SMARC S107) */
+		enable-gpios = <&som_gpio_expander 7 GPIO_ACTIVE_HIGH>;
+		vcc-supply = <&reg_carrier_1p8v>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+
+				dsi_lvds_bridge_in: endpoint {
+					data-lanes = <1 2 3 4>;
+					remote-endpoint = <&mipi_dsi_out>;
+				};
+			};
+
+			port@2 {
+				reg = <2>;
+
+				dsi_lvds_bridge_out: endpoint {
+					remote-endpoint = <&panel_lvds_bridge_in>;
+				};
+			};
+		};
+	};
+
+	touchscreen@41 {
+		compatible = "ilitek,ili2132";
+		reg = <0x41>;
+		/* SMARC GPIO8 (SMARC P116) - DSI_INT# */
+		/* Rising edge avoids spurious interrupts from the noisy falling edge. */
+		interrupt-parent = <&gpio1>;
+		interrupts = <1 IRQ_TYPE_EDGE_RISING>;
+	};
+};
+
+&lcdif1 {
+	status = "okay";
+};
+
+&mipi_dsi {
+	samsung,esc-clock-frequency = <16000000>;
+
+	status = "okay";
+};
+
+&mipi_dsi_out {
+	remote-endpoint = <&dsi_lvds_bridge_in>;
+};

-- 
2.43.0