ARM: dts: imx6: add support for Ka-Ro TX6 modules

This patch adds support for the Ka-Ro electronics GmbH TX6 modules.
There are five distinct module types with either i.MX6Q or i.MX6DL and
LVDS or LCD display interface and one DTS file for a complete system
with an i.MX6DL based TX6 module and a baseboard mounted on the back
of a display (imx6dl-tx6dl-comtft.dts).

Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>

arch/arm/boot/dts/imx6q-tx6q-1010-comtft.dts

@@ -0,0 +1,103 @@
+/*
+ * Copyright 2014 Lothar Waßmann <LW@KARO-electronics.de>
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+/dts-v1/;
+#include "imx6q.dtsi"
+#include "imx6qdl-tx6.dtsi"
+
+/ {
+	model = "Ka-Ro electronics TX6Q-1010 Module on CoMpact TFT";
+	compatible = "karo,imx6q-tx6q", "fsl,imx6q";
+
+	aliases {
+		display = &display;
+	};
+
+	backlight: backlight {
+		compatible = "pwm-backlight";
+		pwms = <&pwm2 0 500000 0>;
+		power-supply = <&reg_3v3>;
+		/*
+		 * a poor man's way to create a 1:1 relationship between
+		 * the PWM value and the actual duty cycle
+		 */
+		brightness-levels = < 0  1  2  3  4  5  6  7  8  9
+				     10 11 12 13 14 15 16 17 18 19
+				     20 21 22 23 24 25 26 27 28 29
+				     30 31 32 33 34 35 36 37 38 39
+				     40 41 42 43 44 45 46 47 48 49
+				     50 51 52 53 54 55 56 57 58 59
+				     60 61 62 63 64 65 66 67 68 69
+				     70 71 72 73 74 75 76 77 78 79
+				     80 81 82 83 84 85 86 87 88 89
+				     90 91 92 93 94 95 96 97 98 99
+				    100>;
+		default-brightness-level = <50>;
+	};
+
+	display: display@di0 {
+		compatible = "fsl,imx-parallel-display";
+		interface-pix-fmt = "rgb24";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_disp0_1>;
+		status = "okay";
+
+		port {
+			display0_in: endpoint {
+				remote-endpoint = <&ipu1_di0_disp0>;
+			};
+		};
+
+		display-timings {
+			native-mode = <&ET070001DM6>;
+
+			ET070001DM6: CoMTFT { /* same as ET0700 but with inverted pixel clock */
+				clock-frequency = <33264000>;
+				hactive = <800>;
+				vactive = <480>;
+				hback-porch = <88>;
+				hsync-len = <128>;
+				hfront-porch = <40>;
+				vback-porch = <33>;
+				vsync-len = <2>;
+				vfront-porch = <10>;
+				hsync-active = <0>;
+				vsync-active = <0>;
+				de-active = <1>;
+				pixelclk-active = <1>;
+			};
+		};
+        };
+};
+
+&can1 {
+	status = "disabled";
+};
+
+&can2 {
+	xceiver-supply = <&reg_3v3>;
+};
+
+&ipu1_di0_disp0 {
+	remote-endpoint = <&display0_in>;
+};
+
+&kpp {
+	status = "disabled";
+};
+
+&reg_can_xcvr {
+	status = "disabled";
+};
+
+&touchscreen {
+	status = "disabled";
+};