[PATCH v2 5/7] arm64: dts: freescale: imx8mm-verdin: Add Toradex Capacitive Touch Display 7" DSI

From: Ernest Van Hoecke <[email protected]>

Add a device tree overlay for the Toradex Capacitive Touch Display 7"
on the Verdin DSI_1 interface. The display features an internal Texas
Instruments SN65DSI83 DSI-to-LVDS bridge driving a Riverdi
RVT70HSLNWCA0 7" WSVGA IPS TFT LCD panel. The touch input is provided
by an Ilitek ILI2132 capacitive touch controller.

Link: https://developer.toradex.com/hardware/accessories/displays/capacitive-touch-display-7inch-dsi
Link: https://developer.toradex.com/hardware/accessories/add-ons/dsi-display-adapter
Signed-off-by: Ernest Van Hoecke <[email protected]>
---
 arch/arm64/boot/dts/freescale/Makefile             |   4 +
 .../imx8mm-verdin-panel-cap-touch-7inch-dsi.dtso   | 129 +++++++++++++++++++++
 2 files changed, 133 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 00dc2893c754..fe261d7bdab5 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -191,12 +191,14 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-nonwifi-yavia-dsi-to-hdmi.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-nonwifi-yavia.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-nonwifi-zinnia.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-panel-cap-touch-10inch-dsi.dtbo
+dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-panel-cap-touch-7inch-dsi.dtbo
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-wifi-dahlia-dsi-to-hdmi.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-wifi-dahlia-panel-cap-touch-10inch-dsi.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-wifi-dahlia.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-wifi-dev-dsi-to-hdmi.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-wifi-dev-dsi-to-lvds-panel-cap-touch-10inch.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-wifi-dev-nau8822-btl.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-wifi-dev-panel-cap-touch-7inch-dsi.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-wifi-dev.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-wifi-ivy.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-verdin-wifi-mallow.dtb
@@ -216,6 +218,8 @@ imx8mm-verdin-wifi-dev-dsi-to-hdmi-dtbs := imx8mm-verdin-wifi-dev.dtb imx8mm-ver
 imx8mm-verdin-wifi-dev-dsi-to-lvds-panel-cap-touch-10inch-dtbs := imx8mm-verdin-wifi-dev.dtb \
 	imx8mm-verdin-dsi-to-lvds-panel-cap-touch-10inch.dtbo
 imx8mm-verdin-wifi-dev-nau8822-btl-dtbs := imx8mm-verdin-wifi-dev.dtb imx8mm-verdin-dev-nau8822-btl.dtbo
+imx8mm-verdin-wifi-dev-panel-cap-touch-7inch-dsi-dtbs := imx8mm-verdin-wifi-dev.dtb \
+	imx8mm-verdin-panel-cap-touch-7inch-dsi.dtbo
 imx8mm-verdin-wifi-yavia-dsi-to-hdmi-dtbs := imx8mm-verdin-wifi-yavia.dtb imx8mm-verdin-dsi-to-hdmi.dtbo
 
 imx8mm-tqma8mqml-mba8mx-lvds-g133han01-dtbs += imx8mm-tqma8mqml-mba8mx.dtb imx8mm-tqma8mqml-mba8mx-lvds-g133han01.dtbo
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-verdin-panel-cap-touch-7inch-dsi.dtso b/arch/arm64/boot/dts/freescale/imx8mm-verdin-panel-cap-touch-7inch-dsi.dtso
new file mode 100644
index 000000000000..0e15b4b3f3ec
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mm-verdin-panel-cap-touch-7inch-dsi.dtso
@@ -0,0 +1,129 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright (c) Toradex
+ *
+ * Toradex Capacitive Touch Display 7" on Verdin DSI_1.
+ * On Dahlia (X17) and Development Board (X48), DSI_1 is exposed via a
+ * Samtec LSS-130 connector and requires the Toradex DSI Display Adapter
+ * to convert to FFC/FPC connector.
+ *
+ * https://developer.toradex.com/hardware/accessories/displays/capacitive-touch-display-7inch-dsi
+ * https://www.toradex.com/accessories/capacitive-touch-display-7-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>
+#include <dt-bindings/pwm/pwm.h>
+
+&{/} {
+	backlight_pwm3: backlight-pwm3 {
+		compatible = "pwm-backlight";
+		brightness-levels = <0 45 63 88 119 158 203 255>;
+		default-brightness-level = <4>;
+		power-supply = <&reg_3p3v>;
+		/* Verdin PWM_3_DSI (SODIMM 19) */
+		pwms = <&pwm1 0 6666667 0>;
+	};
+
+	panel-lvds-bridge {
+		compatible = "riverdi,rvt70hslnwca0", "panel-lvds";
+		backlight = <&backlight_pwm3>;
+		data-mapping = "vesa-24";
+		height-mm = <86>;
+		width-mm = <154>;
+
+		panel-timing {
+			clock-frequency = <51200000>;
+			de-active = <1>;
+			hactive = <1024>;
+			hback-porch = <100 100 100>;
+			hfront-porch = <16 160 216>;
+			hsync-active = <0>;
+			hsync-len = <50 60 140>;
+			pixelclk-active = <1>;
+			vactive = <600>;
+			vback-porch = <23 23 23>;
+			vfront-porch = <1 12 126>;
+			vsync-active = <0>;
+			vsync-len = <1 10 20>;
+		};
+
+		port {
+			panel_lvds_bridge_in: endpoint {
+				remote-endpoint = <&dsi_lvds_bridge_out>;
+			};
+		};
+	};
+};
+
+/* Verdin I2C_2_DSI */
+&i2c2 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	status = "okay";
+
+	bridge@2c {
+		compatible = "ti,sn65dsi83";
+		reg = <0x2c>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_gpio_10_dsi>;
+		/* Verdin GPIO_10_DSI (SODIMM 21) - DSI_1_BKL_EN */
+		enable-gpios = <&gpio3 3 GPIO_ACTIVE_HIGH>;
+		vcc-supply = <&reg_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>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_gpio_9_dsi>, <&pinctrl_i2s_2_bclk_touch_reset>;
+		/* Verdin GPIO_9_DSI (SODIMM 17) - TOUCH_INT# */
+		/* Rising edge avoids spurious interrupts from the noisy falling edge. */
+		interrupt-parent = <&gpio3>;
+		interrupts = <15 IRQ_TYPE_EDGE_RISING>;
+		/* Verdin I2S_2_BCLK (SODIMM 42) - TOUCH_RESET# */
+		reset-gpios = <&gpio3 23 GPIO_ACTIVE_LOW>;
+	};
+};
+
+&lcdif {
+	status = "okay";
+};
+
+&mipi_dsi {
+	samsung,esc-clock-frequency = <16000000>;
+
+	status = "okay";
+};
+
+&mipi_dsi_out {
+	remote-endpoint = <&dsi_lvds_bridge_in>;
+};

-- 
2.43.0