arm: imx6q: Add Engicam i.CoreM6 Solo/Duallite RQS Starter Kit initial support

Boot from MMC:
-------------
U-Boot SPL 2016.11-rc2-g217bd8e-dirty (Nov 08 2016 - 22:56:07)
Trying to boot from MMC1

U-Boot 2016.11-rc2-g217bd8e-dirty (Nov 08 2016 - 22:56:07 +0530)

CPU:   Freescale i.MX6DL rev1.3 at 792 MHz
Reset cause: POR
Model: Engicam i.CoreM6 DualLite/Solo RQS Starter Kit
DRAM:  512 MiB
MMC:   FSL_SDHC: 0
*** Warning - bad CRC, using default environment

In:    serial
Out:   serial
Err:   serial
Net:   CPU Net Initialization Failed
No ethernet found.
Hit any key to stop autoboot:  0
icorem6qdl-rqs>

Cc: Stefano Babic <sbabic@denx.de>
Cc: Matteo Lisi <matteo.lisi@engicam.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>

arch/arm/dts/Makefile

@@ -298,6 +298,7 @@ dtb-$(CONFIG_MX53) += imx53-cx9020.dtb
 dtb-$(CONFIG_MX6) += imx6ull-14x14-evk.dtb \
 	imx6sll-evk.dtb \
 	imx6dl-icore.dtb \
+	imx6dl-icore-rqs.dtb \
 	imx6q-icore.dtb \
 	imx6q-icore-rqs.dtb \
 	imx6ul-geam-kit.dtb

arch/arm/dts/imx6dl-icore-rqs.dts

@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2015 Amarula Solutions B.V.
+ *
+ * This file is dual-licensed: you can use it either under the terms
+ * of the GPL or the X11 license, at your option. Note that this dual
+ * licensing only applies to this file, and not this project as a
+ * whole.
+ *
+ *  a) This file is free software; you can redistribute it and/or
+ *     modify it under the terms of the GNU General Public License
+ *     version 2 as published by the Free Software Foundation.
+ *
+ *     This file 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.
+ *
+ * Or, alternatively
+ *
+ *  b) Permission is hereby granted, free of charge, to any person
+ *     obtaining a copy of this software and associated documentation
+ *     files (the "Software"), to deal in the Software without
+ *     restriction, including without limitation the rights to use
+ *     copy, modify, merge, publish, distribute, sublicense, and/or
+ *     sell copies of the Software, and to permit persons to whom the
+ *     Software is furnished to do so, subject to the following
+ *     conditions:
+ *
+ *     The above copyright notice and this permission notice shall be
+ *     included in all copies or substantial portions of the Software.
+ *
+ *     THE SOFTWARE IS PROVIDED , WITHOUT WARRANTY OF ANY KIND
+ *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY
+ *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *     OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/dts-v1/;
+
+#include "imx6q.dtsi"
+#include "imx6qdl-icore-rqs.dtsi"
+
+/ {
+	model = "Engicam i.CoreM6 DualLite/Solo RQS Starter Kit";
+	compatible = "engicam,imx6-icore-rqs", "fsl,imx6q";
+};

board/engicam/icorem6_rqs/MAINTAINERS

@@ -4,3 +4,4 @@ S:	Maintained
 F:	board/engicam/icorem6_rqs
 F:	include/configs/imx6qdl_icore_rqs.h
 F:	configs/imx6q_icore_rqs_mmc_defconfig
+F:	configs/imx6dl_icore_rqs_mmc_defconfig

board/engicam/icorem6_rqs/README

@@ -1,11 +1,14 @@
-How to use U-Boot on Engicam i.CoreM6 RQS Quad/Dual Starter Kit:
-----------------------------------------------------------------
+How to use U-Boot on Engicam i.CoreM6 RQS Solo/DualLite and Quad/Dual Starter Kit:
+----------------------------------------------------------------------------------
 
 $ make mrproper
 
 - Configure U-Boot for Engicam i.CoreM6 RQS Quad/Dual:
 $ make imx6q_icore_rqs_mmc_defconfig
 
+- Configure U-Boot for Engicam i.CoreM6 RQS Solo/DualLite:
+$ make imx6dl_icore_rqs_mmc_defconfig
+
 - Build U-Boot
 $ make
 

configs/imx6dl_icore_rqs_mmc_defconfig

@@ -0,0 +1,38 @@
+CONFIG_ARM=y
+CONFIG_ARCH_MX6=y
+CONFIG_TARGET_MX6Q_ICORE_RQS=y
+CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/imx-common/spl_sd.cfg,ENV_IS_IN_MMC"
+CONFIG_DEFAULT_FDT_FILE="imx6dl-icore-rqs.dtb"
+CONFIG_DEFAULT_DEVICE_TREE="imx6dl-icore-rqs"
+CONFIG_SYS_PROMPT="icorem6qdl-rqs> "
+CONFIG_SPL=y
+CONFIG_BOOTDELAY=3
+CONFIG_BOARD_EARLY_INIT_F=y
+CONFIG_DISPLAY_CPUINFO=y
+CONFIG_HUSH_PARSER=y
+CONFIG_AUTO_COMPLETE=y
+CONFIG_SYS_MAXARGS=32
+# CONFIG_CMD_IMLS is not set
+# CONFIG_BLK is not set
+# CONFIG_DM_MMC_OPS is not set
+CONFIG_CMD_BOOTZ=y
+CONFIG_CMD_GPIO=y
+CONFIG_CMD_MEMTEST=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_CACHE=y
+CONFIG_CMD_EXT2=y
+CONFIG_CMD_EXT4=y
+CONFIG_CMD_EXT4_WRITE=y
+CONFIG_CMD_FAT=y
+CONFIG_CMD_FS_GENERIC=y
+CONFIG_OF_LIBFDT=y
+CONFIG_MXC_UART=y
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_IMX6=y
+CONFIG_SPL_LIBDISK_SUPPORT=y
+CONFIG_SPL_LIBCOMMON_SUPPORT=y
+CONFIG_SPL_LIBGENERIC_SUPPORT=y
+CONFIG_SPL_SERIAL_SUPPORT=y
+CONFIG_SPL_GPIO_SUPPORT=y
+CONFIG_SPL_WATCHDOG_SUPPORT=y
+CONFIG_SPL_EXT_SUPPORT=y