[C61] add eDP sn65dsi86 support

* enabled at u-boot: seco_config tool

arch/arm64/boot/dts/seco/overlays/Makefile

@@ -34,6 +34,7 @@ dtbo-$(CONFIG_ARCH_MXC) += \
 	seco-imx8mm-c61-port2-gpios.dtbo\
 	seco-imx8mm-c61-port2-rs232.dtbo\
 	seco-imx8mm-c61-port2-rs485.dtbo\
+	seco-imx8mm-c61-video-sn65dsi86.dtbo\
 	seco-imx8mp-d18-hdmi.dtbo\
 	seco-imx8mp-d18-edp.dtbo\
 	seco-imx8mp-d18-lvds-fhd.dtbo\

arch/arm64/boot/dts/seco/overlays/seco-imx8mm-c61-video-sn65dsi86-overlay.dts

+/*
+ * Copyright 2021 SECO
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <dt-bindings/drm_mipi_dsi.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/display/media-bus-format.h>
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "fsl,imx8mm-evk", "seco,imx8mm-c61", "fsl,imx8mm";
+
+/*  __________________________________________________________________________
+ * |                                                                          |
+ * |                               DSI-to-eDP                                 |
+ * |__________________________________________________________________________|
+ */
+
+	fragment@regulators {
+		target-path = "/";
+		__overlay__ {
+			reg_bkl_on: bklon {
+				compatible = "regulator-fixed";
+				regulator-name = "BKL ON";
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				gpio = <&gpio4 4 GPIO_ACTIVE_HIGH>;
+				off-on-delay = <20000>;
+				startup-delay-us = <1000>;
+				enable-active-high;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			reg_panel_on: panelon {
+				compatible = "regulator-fixed";
+				regulator-name = "PANEL ON";
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				gpio = <&gpio4 5 GPIO_ACTIVE_HIGH>;
+				enable-active-high;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+		};
+	};
+
+	fragment@backlight {
+		target-path = "/";
+		__overlay__ {
+			backlight@0 {
+				compatible = "pwm-backlight";
+				pwms = <&pwm1 0 5000000 0>; // 200Hz
+
+				brightness-levels = <0 100>;
+				num-interpolated-steps = <100>;
+				default-brightness-level = <80>;
+
+				enable-gpios = <&pca6416_20 9 GPIO_ACTIVE_HIGH>;
+			};
+		};
+	};
+
+	fragment@panel {
+		target-path = "/";
+		__overlay__ {
+			panel_edp: edp_panel {
+				compatible = "seco-boe,ev156fhm", "panel-dpi";
+				#address-cells = <1>;
+				#size-cells = <0>;
+				no-hpd;
+
+				width-mm  = <68>;
+				height-mm = <121>;
+
+				prepare-ms   = <100>;
+				enable-ms    = <100>;
+				disable-ms   = <100>;
+				unprepare-ms = <100>;
+
+				bpc = <8>;
+				bus-format = <DT_MEDIA_BUS_FMT_RGB888_1X24>;
+
+				status = "okay";
+
+				panel-timing {
+					clock-frequency = <164000000>;
+					hactive = <1920>;
+					vactive = <1080>;
+					hfront-porch = <48>;
+					hback-porch = <142>;
+					hsync-len = <32>;
+					vfront-porch = <3>;
+					vback-porch = <11>;
+					vsync-len = <6>;
+				};
+
+				port@0 {
+					reg = <0>;
+					panel_edp_in: endpoint@0 {
+						remote-endpoint = <&bridge_to_panel>;
+					};
+				};
+			};
+		};
+	};
+
+	fragment@lcdif {
+		target = <&lcdif>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@mipi_dsi {
+		target = <&mipi_dsi>;
+		__overlay__ {
+			status = "okay";
+
+			port@1 {
+				mipi_to_bridge: endpoint {
+					remote-endpoint = <&bridge_to_mipi>;
+					attach-bridge;
+				};
+			};
+		};
+	};
+
+	fragment@edp_bridge {
+		target = <&i2c4>;
+		__overlay__ {
+			edp_bridge: sn65dsi86@2d {
+				compatible = "seco,sn65dsi86";
+				reg = <0x2d>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+				pd-gpios = <&gpio1 11 GPIO_ACTIVE_HIGH>;
+				bkl-gpios = <&pca6416_20 5 GPIO_ACTIVE_HIGH>;
+				vcc-supply = <&reg_bkl_on>;
+				clocks = <&osc_27m>;
+				dsi,max-lanes = <4>;
+				dsi,max-rate = <2500>;
+				dsi,mode-flags = <(MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE | MIPI_DSI_MODE_LPM)>;
+				bkl_on_off_delay_range_us = <0 6000>;
+				lcd_on_off_delay_range_us = <0 200000>;
+
+				edp_irq-gpios = <&gpio4 27 IRQ_TYPE_EDGE_FALLING>;
+				read-dp-rate-from-panel;
+				enable-hpd;
+
+				si-result = <0xb0 0x41>,
+							<0xb1 0x72>,
+							<0xb2 0xa4>,
+							<0xb3 0xc6>,
+							<0xb4 0xc6>,
+							<0xb5 0x32>,
+							<0xb6 0x74>,
+							<0xb8 0x33>,
+							<0xb9 0x75>,
+							<0xbc 0x34>;
+
+				status = "okay";
+
+				port@0 {
+					reg = <0>;
+					bridge_to_mipi: endpoint {
+						remote-endpoint = <&mipi_to_bridge>;
+					};
+				};
+				port@1 {
+					reg = <1>;
+					bridge_to_panel: endpoint {
+						remote-endpoint = <&panel_edp_in>;
+					};
+				};
+			};
+		};
+	};
+
+};

arch/arm64/boot/dts/seco/seco-imx8mm-c61.dts

@@ -82,6 +82,13 @@
 		clock-output-names = "osc_20m";
 	};
 
+	osc_27m: clock-osc-27m {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <27000000>;
+		clock-output-names = "osc_27m";
+	};
+
 	reg_usdhc1_vmmc: sd1_regulator {
 		compatible = "regulator-fixed";
 		regulator-name = "WLAN_EN";