1. Add USDHC, I2C, UART, 74LV, USB, QSPI support.
2. Support SPL
3. CONFIG_MX6UL_14X14_EVK_EMMC_REWORK is introduced, this board default
   supports sd for usdhc2, but can do hardware rework to make usdhc2 support
   emmc.

Boot Log:
U-Boot SPL 2015.07-rc3-00124-g35d727b (Jul 20 2015 - 18:40:59)
reading u-boot.img
reading u-boot.img

U-Boot 2015.07-rc3-00124-g35d727b (Jul 20 2015 - 18:40:59 +0800)

CPU:   Freescale i.MX6UL rev1.0 792 MHz (running at 396 MHz)
CPU:   Commercial temperature grade (0C to 95C)CPU:   Thermal invalid data, fuse: 0x0
 - invalid sensor device
 Reset cause: POR
 Board: MX6UL 14x14 EVK
 I2C:   ready
 DRAM:  512 MiB
 MMC:   FSL_SDHC: 0, FSL_SDHC: 1
 *** 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
Signed-off-by: NPeng Fan <Peng.Fan@freescale.com>

i.MX6UL's DRAM space starts from 0x80000000, same to i.MX6SX, so use
same address with i.MX6SX.
Signed-off-by: NPeng Fan <Peng.Fan@freescale.com>

1. Define two structures mx6ul_iomux_ddr_regs and mx6ul_iomux_grp_regs.
2. Add a new function mx6ul_dram_iocfg to configure dram io.
3. Refactor MMDC1 macro, discard "#ifdef CONFIG_MX6SX". Since
   only mmdc0 channel exists on i.MX6SX/UL, redefine MMDC1 macro support
   runtime check, but not hardcoding #ifdef macros.
4. Introduce mx6ul-ddr.h, which includes the register address for DRAM
   IO configuration.
Signed-off-by: NPeng Fan <Peng.Fan@freescale.com>

DRAM space starts from 0x80000000 for i.MX6UL, so need to
fix LOADADDR, SYS_TEXT_BASE.
Signed-off-by: NPeng Fan <Peng.Fan@freescale.com>

i.MX6UL does not have GPIO6/7, so do not include them for i.MX6UL.
Signed-off-by: NPeng Fan <Peng.Fan@freescale.com>

PAD_CTL_SPEED_LOW for i.MX6SX/UL is (0 << 6)
Signed-off-by: NYe.Li <B37916@freescale.com>
Signed-off-by: NPeng Fan <Peng.Fan@freescale.com>

1.Update WDOG settings.
2.No need to gate/ungate all PFDs for i.MX6UL.
Signed-off-by: NPeng Fan <Peng.Fan@freescale.com>
Signed-off-by: NYe.Li <B37916@freescale.com>

i.MX6UL features an Cortex-A7 core, it does not have PL310 as other i.MX6
chips. To Cortex-A7 core, If D-Cache is enabled, L2 Cache is enabled.
There is on specific switch for on/off L2 Cache, so default select
SYS_L2CACHE_OFF.
Signed-off-by: NPeng Fan <Peng.Fan@freescale.com>

1. Add enet, uart, i2c, ipg clock support for i.MX6UL.
2. Correct get_periph_clk, it should account for
   MXC_CCM_CBCDR_PERIPH_CLK2_PODF_MASK.
3. Refactor get_mmdc_ch0_clk to make all i.MX6 share one function,
   but not use 'ifdef'.
4. Use CONFIG_FSL_QSPI for enable_qspi_clk, but not #ifdef CONFIG_MX6SX.
5. Use CONFIG_PCIE_IMX for pcie clock settings, use CONFIG_CMD_SATA for
   sata clock settings. In this way, we not need "#if defined(CONFIG_MX6Q)
   || defined....", only need one CONFIG_PCIE_IMX in header file.
Signed-off-by: NYe.Li <B37916@freescale.com>
Signed-off-by: NPeng Fan <Peng.Fan@freescale.com>

Since i.MX6UL use A7 core, but not A9 core, we do not need
the erratas for i.MX6UL.
Signed-off-by: NYe.Li <B37916@freescale.com>
Signed-off-by: NPeng Fan <Peng.Fan@freescale.com>

Add i.MX6UL GPT timer support.
Signed-off-by: NPeng Fan <Peng.Fan@freescale.com>

Since i.MX6UL's cache line size is 64bytes, need to
define the macro CONFIG_SYS_CACHELINE_SIZE to 64 for i.MX6UL.
Signed-off-by: NPeng Fan <Peng.Fan@freescale.com>

1. Update imx register base address for i.MX6UL.
2. Remove duplicated MXS_APBH/GPMI/BCH_BASE.
3. Remove #ifdef for register addresses that equal to
   "AIPS2_OFF_BASE_ADDR + 0x34000" for different chips.
4. According fuse map, complete fuse_bank4_regs.
5. Move AIPS3_ARB_BASE_ADDR and AIPS3_ARB_END_ADDR out of #ifdef CONFIG_MX6SX,
   because we can use runtime check
Signed-off-by: NPeng Fan <Peng.Fan@freescale.com>

Add i.MX6UL pins IOMUX file which defines the IOMUX settings for choose.
Signed-off-by: NPeng Fan <Peng.Fan@freescale.com>
Signed-off-by: NYe.Li <B37916@freescale.com>

Add MXC_CPU_MX6UL for i.MX6UL CPU type which is got at runtime from
DIGPROG register. But the value has been occupied by MXC_CPU_MX6D which
is not real id from DIGPROG register, so change i.MX6D to value 0x67 which
was not occupied.
Signed-off-by: NPeng Fan <Peng.Fan@freescale.com>
Signed-off-by: NYe.Li <B37916@freescale.com>

Add kconfig options for various SPI flashes and use them in cm-fx6 defconfig.

Cc: Jagan Teki <jteki@openedev.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: NNikita Kiryanov <nikita@compulab.co.il>
Acked-by: NIgor Grinberg <grinberg@compulab.co.il>

With recent additions to USB Kconfig the number of USB options had grown
large enough to warrant a separate menu for USB.

Add a Kconfig menu for USB.

Cc: Marek Vasut <marex@denx.de>
Signed-off-by: NNikita Kiryanov <nikita@compulab.co.il>

Add Kconfig options for USB keyboard and use them for cm-fx6.

Cc: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: NNikita Kiryanov <nikita@compulab.co.il>
Acked-by: NIgor Grinberg <grinberg@compulab.co.il>

Add USB_EHCI_MX6 option to menuconfig and use it when migrating cm-fx6 usb
config to defconfig.

Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: NNikita Kiryanov <nikita@compulab.co.il>
Acked-by: NIgor Grinberg <grinberg@compulab.co.il>

CPU_V7 is already selected by ARCH_MX6, so no point in selecting it again
by boards that depend on ARCH_MX6.

Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: NNikita Kiryanov <nikita@compulab.co.il>

cm-fx6 is an MX6 based board, and the menuconfig hierarchy should
reflect that. Make TARGET_CM_FX6 dependant on ARCH_MX6.

Cc: Stefano Babic <sbabic@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: NNikita Kiryanov <nikita@compulab.co.il>
Acked-by: NIgor Grinberg <grinberg@compulab.co.il>

Move CONFIG_CMD_* options that can be selected in menuconfig to cm-fx6
defconfig.

Cc: Stefano Babic <sbabic@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: NNikita Kiryanov <nikita@compulab.co.il>
Acked-by: NIgor Grinberg <grinberg@compulab.co.il>

Refactor display code to only setup hdmi if do_enable_hdmi() is invoked.

Cc: Stefano Babic <sbabic@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: NNikita Kiryanov <nikita@compulab.co.il>
Acked-by: NIgor Grinberg <grinberg@compulab.co.il>

Add support for selecting display preset using the environment variable
"displaytype". This is a preparation for future merging of compulab
omap3_display.c display selection code with the cm-fx6 display selection code.

The "panel" environment variable is retained for backwards compatibility.

Cc: Stefano Babic <sbabic@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: NNikita Kiryanov <nikita@compulab.co.il>
Acked-by: NIgor Grinberg <grinberg@compulab.co.il>

Implement a cm-fx6 specific board_video_skip() to provide the option to not
initialize the display.

The new function does not init display if the environment variable "panel" is
not defined, or if it is set to an unsupported value.

Collateral changes:
- Don't use the global displays array (it's CONFIG_IMX_VIDEO_SKIP specific).
- Don't use detect_hdmi(), since env controlled init makes it unnecessary.

Cc: Stefano Babic <sbabic@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: NNikita Kiryanov <nikita@compulab.co.il>
Signed-off-by: NIgor Grinberg <grinberg@compulab.co.il>

U-Boot does not explicitly assign the display to an IPU interface. Instead, it
relies on the power-on default of DI0.

Since the kernel reassigns HDMI display to DI1, after a warm reset the HDMI
display no longer works in U-Boot.

Fix this by explicitly assigning HDMI to IPU1 DI0 in U-Boot.

Cc: Stefano Babic <sbabic@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: NNikita Kiryanov <nikita@compulab.co.il>
Acked-by: NIgor Grinberg <grinberg@compulab.co.il>

1. Add DDR script for mx6qpsabreauto board.
2. On CPU3 board, enet RGMII tx clock is from internal PLL. Set the GPR5[9]
   and init the enet pll output to 125Mhz.
3. On CPU3 board, SW1ABC=VDDSOC_IN, SW2=VDDARM_IN.

Build target: mx6qpsabreauto_config

Boot Log:
U-Boot 2015.07-rc2-00071-gfd985ff (Jun 29 2015 - 22:10:55 +0800)

CPU:   Freescale i.MX6QP rev1.0 996 MHz (running at 792 MHz)
CPU:   Automotive temperature grade (-40C to 125C) at 34C
Reset cause: POR
Board: MX6Q-Sabreauto revA
I2C:   ready
DRAM:  2 GiB
PMIC:  PFUZE100 ID=0x10
Flash: 32 MiB
NAND:  0 MiB
MMC:   FSL_SDHC: 0
*** Warning - bad CRC, using default environment

No panel detected: default to HDMI
Display: HDMI (1024x768)
In:    serial
Out:   serial
Err:   serial
Net:   FEC [PRIME]
Hit any key to stop autoboot:  0

Note:
In this patch, we still add a new config mx6qpsabreauto_config,
since SPL is not supported now, and IMX_CONFIG is needed at
build time, so add this config. Future, when SPL is converted,
this config can be removed.
Signed-off-by: NPeng Fan <Peng.Fan@freescale.com>
Signed-off-by: NRobin Gong <b38343@freescale.com>
Signed-off-by: NYe.Li <B37916@freescale.com>
Reviewed-by: NFabio Estevam <fabio.estevam@freescale.com>

Detect the SOC and board variant at runtime and change the dtb name,
but not hardcoding the fdt_file env variable.

Take the following patch as a reference.
Íd58699b157df75f1aa0b363ea9c21add21a0c
"mx6cuboxi: Load the correct 'fdtfile' variable"
Signed-off-by: NPeng Fan <Peng.Fan@freescale.com>
Reviewed-by: NFabio Estevam <fabio.estevam@freescale.com>
Acked-by: NStefano Babic <sbabic@denx.de>

The i.MX6DQP has a PRG module, need to enable its clock for using IPU.
Signed-off-by: NPeng Fan <Peng.Fan@freescale.com>
Signed-off-by: NBrown Oliver <B37094@freescale.com>
Signed-off-by: NYe.Li <B37916@freescale.com>
Reviewed-by: NFabio Estevam <fabio.estevam@freescale.com>
Acked-by: NStefano Babic <sbabic@denx.de>

Since the i.MX6QP has fixed the issue in boot ROM, so remove the workaround
for i.MX6QP.
Signed-off-by: NYe.Li <B37916@freescale.com>
Signed-off-by: NPeng Fan <Peng.Fan@freescale.com>
Acked-by: NStefano Babic <sbabic@denx.de>

Since i.MX6QP changes some CCM registers, so modify the clocks settings to
follow the hardware changes.

In c files, use runtime check and discard #ifdef.
Signed-off-by: NPeng Fan <Peng.Fan@freescale.com>
Signed-off-by: NYe.Li <B37916@freescale.com>
Reviewed-by: NFabio Estevam <fabio.estevam@freescale.com>
Acked-by: NStefano Babic <sbabic@denx.de>

Add cpu type for i.MX6QP/DP.

This patch also fix is_mx6dqp(), since get_cpu_rev can return MXC_CPU_MX6QP
and MXC_CPU_MX6DP, we should use:
(is_cpu_type(MXC_CPU_MX6QP) || is_cpu_type(MXC_CPU_MX6DP)).
Signed-off-by: NPeng Fan <Peng.Fan@freescale.com>
Acked-by: NStefano Babic <sbabic@denx.de>

Use more standard boot scripts and also add the capability of
booting via NFS.
Signed-off-by: NOtavio Salvador <otavio@ossystems.com.br>

Use the same DCD settings from Congatec's U-boot tree for
the P/N 016113 card.
Signed-off-by: NOtavio Salvador <otavio@ossystems.com.br>

Add SATA support.
Signed-off-by: NOtavio Salvador <otavio@ossystems.com.br>

Add LVDS and HDMI support.
Signed-off-by: NOtavio Salvador <otavio@ossystems.com.br>

Add USB support.
Signed-off-by: NOtavio Salvador <otavio@ossystems.com.br>

cgtqmx6eval has a PFUZE100 FSL PMIC connected to I2C2.

Add support for it.
Signed-off-by: NOtavio Salvador <otavio@ossystems.com.br>

Add thermal support so that we can see the following message on boot:

CPU:   Industrial temperature grade (-40C to 105C) at 33C
Signed-off-by: NOtavio Salvador <otavio@ossystems.com.br>

cgtqmx6eval has an eMMC connected to ESDHC3.

Add support for it.
Signed-off-by: NOtavio Salvador <otavio@ossystems.com.br>