[PATCH v2 5/6] ARM: dts: imx6q: Add Variscite DART-MX6 Carrier-board support

This patch adds support for the i.MX6 Quad variant of the Variscite DART-MX6
SoM Carrier-Board.

This Carrier-Board has the following :
- LVDS interface for the VLCD-CAP-GLD-LVDS 7" LCD 800 x 480 touch display
- HDMI Connector
- USB Host + USB OTG Connector
- 10/100/1000 Mbps Ethernet
- miniPCI-Express slot
- SD Card connector
- Audio Headphone/Line In jack connectors
- On-board DMIC
- CAN bus header
- SPI header
- Camera Interfaces header
- 4xButtons, 2xLeds
- OnBoard RTC with Coin Backup battery socket
- RS232 Header + USB-Serial debug port

Product Page : http://www.variscite.com/products/evaluation-kits/dart-mx6-kits

The board support is done with all on-board and header interfaces enabled.
7" LVDS Touchscreen is enabled by default along HDMI output.
Audio interface is supported with the "simple-card" bindings.

PCIe slot, On-Board DMIC and Camera Interfaces are not handled yet.

Signed-off-by: Neil Armstrong <redacted>
---
 arch/arm/boot/dts/Makefile                     |   1 +
 arch/arm/boot/dts/imx6q-var-dt6customboard.dts | 238 +++++++++++++++++++++++++
 2 files changed, 239 insertions(+)
 create mode 100644 arch/arm/boot/dts/imx6q-var-dt6customboard.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index d0381e9..148ff15 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile

@@ -470,6 +470,7 @@ dtb-$(CONFIG_SOC_IMX6Q) += \
        imx6q-tx6q-11x0-mb7.dtb \
        imx6q-udoo.dtb \
        imx6q-utilite-pro.dtb \
+       imx6q-var-dt6customboard.dtb \
        imx6q-wandboard.dtb \
        imx6q-wandboard-revb1.dtb \
        imx6q-wandboard-revd1.dtb \

diff --git a/arch/arm/boot/dts/imx6q-var-dt6customboard.dts b/arch/arm/boot/dts/imx6q-var-dt6customboard.dts
new file mode 100644
index 0000000..de01755
--- /dev/null
+++ b/arch/arm/boot/dts/imx6q-var-dt6customboard.dts

@@ -0,0 +1,238 @@
+/*
+ * Support for Variscite DART-MX6 Carrier-board
+ *
+ * Copyright 2017 BayLibre, SAS
+ * Author: Neil Armstrong <narmstrong@baylibre.com>
+ *
+ * SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+ */
+
+/dts-v1/;
+
+#include "imx6q.dtsi"
+#include "imx6qdl-var-dart.dtsi"
+#include <dt-bindings/input/linux-event-codes.h>
+
+/ {
+       model = "Variscite DART-MX6 Carrier-board";
+       compatible = "variscite,dt6customboard", "fsl,imx6q";
+
+       backlight_lvds: backlight {
+               compatible = "pwm-backlight";
+               pwms = <&pwm2 0 50000>;
+               brightness-levels = <0 4 8 16 32 64 128 248>;
+               default-brightness-level = <7>;
+               status = "okay";
+       };
+
+       gpio-keys {
+               compatible = "gpio-keys";
+               #address-cells = <1>;
+               #size-cells = <0>;
+               autorepeat;
+
+               back {
+                       gpios = <&gpio4 26 GPIO_ACTIVE_LOW>;
+                       linux,code = <KEY_BACK>;
+                       label = "Key Back";
+                       linux,input-type = <1>;
+                       debounce-interval = <100>;
+                       gpio-key,wakeup;
+               };
+
+               home {
+                       gpios = <&gpio5 11 GPIO_ACTIVE_LOW>;
+                       linux,code = <KEY_HOME>;
+                       label = "Key Home";
+                       linux,input-type = <1>;
+                       debounce-interval = <100>;
+                       gpio-key,wakeup;
+               };
+
+               menu {
+                       gpios = <&gpio4 25 GPIO_ACTIVE_LOW>;
+                       linux,code = <KEY_MENU>;
+                       label = "Key Menu";
+                       linux,input-type = <1>;
+                       debounce-interval = <100>;
+                       gpio-key,wakeup;
+               };
+       };
+
+       gpio-leds {
+               compatible = "gpio-leds";
+
+               led1 {
+                       gpios = <&gpio4 27 GPIO_ACTIVE_HIGH>;
+                       linux,default-trigger = "heartbeat";
+               };
+
+               led2 {
+                       gpios = <&gpio4 28 GPIO_ACTIVE_HIGH>;
+                       linux,default-trigger = "default-on";
+               };
+       };
+
+       panel1: lvds-panel {
+               compatible = "sgd,gktw70sdae4se", "panel-lvds";
+               backlight = <&backlight_lvds>;
+
+               width-mm = <153>;
+               height-mm = <86>;
+
+               label = "gktw70sdae4se";
+
+               data-mapping = "jeida-18";
+
+               panel-timing {
+                       clock-frequency = <32000000>;
+                       hactive = <800>;
+                       vactive = <480>;
+                       hback-porch = <39>;
+                       hfront-porch = <39>;
+                       vback-porch = <29>;
+                       vfront-porch = <13>;
+                       hsync-len = <47>;
+                       vsync-len = <2>;
+               };
+
+               port {
+                       panel_in: endpoint {
+                               remote-endpoint = <&lvds1_out>;
+                       };
+               };
+       };
+
+       reg_usb_h1_vbus: regulator-usbh1vbus {
+               compatible = "regulator-fixed";
+               regulator-name = "usb_h1_vbus";
+               regulator-min-microvolt = <5000000>;
+               regulator-max-microvolt = <5000000>;
+               gpio = <&gpio1 28 GPIO_ACTIVE_HIGH>;