[PATCH 1/6] arm64: dts: freescale: imx8mp-verdin: Add Toradex Capacitive Touch Display 10.1" LVDS

From: Leonardo Costa <[email protected]>

Add a device tree overlay for the Toradex Capacitive Touch Display 10.1"
LVDS connected via Verdin iMX8M Plus LCDIF on carrier boards exposing LVDS
interface (e.g., Mallow). The panel is a LogicTechno LT170410-2WHC 10.1"
WXGA IPS LCD and the touch input is provided by an Atmel MaxTouch
capacitive touch controller.

Link: https://developer.toradex.com/hardware/accessories/displays/capacitive-touch-display-101inch-lvds
Signed-off-by: Leonardo Costa <[email protected]>
---
 arch/arm64/boot/dts/freescale/Makefile        |  6 ++
 ...mp-verdin-panel-cap-touch-10inch-lvds.dtso | 95 +++++++++++++++++++
 2 files changed, 101 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mp-verdin-panel-cap-touch-10inch-lvds.dtso

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 201460ee5669..d643f85baa7f 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -514,13 +514,19 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-nonwifi-ivy.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-nonwifi-mallow.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-nonwifi-yavia.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-nonwifi-zinnia.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-panel-cap-touch-10inch-lvds.dtbo
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-dahlia.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-dev.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-ivy.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-mallow.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-mallow-panel-cap-touch-10inch-lvds.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-yavia.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-zinnia.dtb
 
+imx8mp-verdin-wifi-mallow-panel-cap-touch-10inch-lvds-dtbs := \
+	imx8mp-verdin-wifi-mallow.dtb \
+	imx8mp-verdin-panel-cap-touch-10inch-lvds.dtbo
+
 imx8mp-evk-lvds0-imx-dlvds-hdmi-channel0-dtbs += imx8mp-evk.dtb imx8mp-evk-lvds0-imx-dlvds-hdmi-channel0.dtbo
 imx8mp-evk-lvds0-imx-lvds-hdmi-dtbs += imx8mp-evk.dtb imx8mp-evk-lvds0-imx-lvds-hdmi.dtbo
 imx8mp-evk-lvds1-imx-dlvds-hdmi-channel0-dtbs += imx8mp-evk.dtb imx8mp-evk-lvds1-imx-dlvds-hdmi-channel0.dtbo
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-verdin-panel-cap-touch-10inch-lvds.dtso b/arch/arm64/boot/dts/freescale/imx8mp-verdin-panel-cap-touch-10inch-lvds.dtso
new file mode 100644
index 000000000000..9079c6284dfa
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mp-verdin-panel-cap-touch-10inch-lvds.dtso
@@ -0,0 +1,95 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright (c) Toradex
+ *
+ * Toradex Capacitive Touch Display 10.1" connected via Verdin iMX8M Plus LCDIF
+ * on carrier boards with a Toradex standard LVDS display connector
+ * (e.g., Mallow).
+ *
+ * https://developer.toradex.com/hardware/accessories/displays/capacitive-touch-display-101inch-lvds
+ * https://www.toradex.com/accessories/capacitive-touch-display-10.1-inch-lvds
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/clock/imx8mp-clock.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/pwm/pwm.h>
+
+#include "imx8mp-pinfunc.h"
+
+&{/} {
+	panel-lvds-native {
+		compatible = "logictechno,lt170410-2whc";
+		backlight = <&backlight>;
+		power-supply = <&reg_3p3v>;
+
+		port {
+			panel_lvds_native_in: endpoint {
+				remote-endpoint = <&ldb_lvds_ch0>;
+			};
+		};
+	};
+};
+
+&backlight {
+	/* Verdin PWM_2 (SODIMM 16) */
+	pwms = <&pwm2 0 6666667 PWM_POLARITY_INVERTED>;
+
+	status = "okay";
+};
+
+&iomuxc {
+	pinctrl_i2s_2_d_in_gpio: gpio4io30grp {
+		fsl,pins = <MX8MP_IOMUXC_SAI3_RXD__GPIO4_IO30 0x1c4>;	/* SODIMM 48 */
+	};
+
+	pinctrl_i2s_2_sync_gpio: gpio4io31grp {
+		fsl,pins = <MX8MP_IOMUXC_SAI3_TXFS__GPIO4_IO31 0x184>;	/* SODIMM 44 */
+	};
+};
+
+&atmel_mxt_ts_mezzanine {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_i2s_2_d_in_gpio>, <&pinctrl_i2s_2_sync_gpio>;
+	/* Verdin I2S_2_SYNC as GPIO (SODIMM 44) */
+	interrupt-parent = <&gpio4>;
+	interrupts = <31 IRQ_TYPE_EDGE_FALLING>;
+	/* Verdin I2S_2_D_IN as GPIO (SODIMM 48) */
+	reset-gpios = <&gpio4 30 GPIO_ACTIVE_LOW>;
+	vdd-supply = <&reg_3p3v>;
+
+	status = "okay";
+};
+
+&lcdif2 {
+	status = "okay";
+};
+
+&lvds_bridge {
+	assigned-clocks = <&clk IMX8MP_CLK_MEDIA_LDB>,
+			  <&clk IMX8MP_VIDEO_PLL1>;
+	/*
+	 * This display uses 71.1 MHz pixel clock, so IMX8MP_VIDEO_PLL1 needs
+	 * to be 7 times 71.1MHz, or 497.7 MHz as the internal divider will
+	 * always divide the output LVDS clock by 7.
+	 */
+	assigned-clock-rates = <0>, <497700000>;
+
+	status = "okay";
+
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port@1 {
+			reg = <1>;
+
+			ldb_lvds_ch0: endpoint {
+				remote-endpoint = <&panel_lvds_native_in>;
+			};
+		};
+	};
+};