When running the "save" command several times on a mx6qsabresd we see:

U-Boot > save
Saving Environment to MMC...
Writing to MMC(1)... done
U-Boot > save
Saving Environment to MMC...
MMC partition switch failed
U-Boot > save
Saving Environment to MMC...
Writing to MMC(1)... done
U-Boot > save
Saving Environment to MMC...
MMC partition switch failed
U-Boot > save
Saving Environment to MMC...
Writing to MMC(1)... done
U-Boot > save
Saving Environment to MMC...
MMC partition switch failed

This issue is caused by the incorrect usage of CONFIG_SYS_MMC_ENV_PART.

CONFIG_SYS_MMC_ENV_PART should be used to specify the mmc partition that stores
the environment variables.

On some imx boards it is been incorrectly used to pass the partition of kernel
and dtb files for the 'mmcpart' script variable.

Remove the CONFIG_SYS_MMC_ENV_PART usage and configure the 'mmcpart' variable
directly.
Reported-by: NJason Liu <r64343@freescale.com>
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Acked-by: NJason Liu <r64343@freescale.com>

Add i2c2 and 3 to mx6qsabreauto board, i2c3 is multiplexed
use gpio to set steering.
Signed-off-by: NRenato Frias <b13784@freescale.com>
Reviewed-by: NOtavio Salvador <otavio@ossystems.com.br>
Reviewed-by: NFabio Estevam <fabio.estevam@freescale.com>
Acked-by: NStefano Babic <sbabic@denx.de>

commit 49ea0ff5 (49ea0ff5) introduced CONFIG_SYS_MMC_ENV_PART into mx6qsabresd.h
to store the mmc partition, but in order for it to have effect we should place
it into 'mmcpart' variable.

Also add CONFIG_SYS_MMC_ENV_PART into mx6qsabreauto.h.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>

The USB host interface is routed to plug USB1/J30 on the mother board.
Signed-off-by: NKnut Wohlrab <knut.wohlrab@de.bosch.com>

Signed-off-by: NOtavio Salvador <otavio@ossystems.com.br>
Tested-by: NFabio Estevam <fabio.estevam@freescale.com>

The on-board number of available usdhc devices is something board
specific.  The patch moves CONFIG_SYS_FSL_USDHC_NUM out of
mx6qsabre_common.h and adds usdhc2 and usdhc4 support for mx6qsabresd
board.

To keep the default mmc device for environment same as before (usdhc3),
it moves CONFIG_SYS_MMC_ENV_DEV out of mx6qsabre_common.h and changes
it to 1 for mx6qsabresd.
Signed-off-by: NShawn Guo <shawn.guo@linaro.org>

The mmcroot setting vary between mx6qsabreauto and mx6qsabresd so we
move this to the board configuration file.
Signed-off-by: NOtavio Salvador <otavio@ossystems.com.br>
Acked-by: NFabio Estevam <fabio.estevam@freescale.com>

The mx6qsabreauto console is different than mx6qsabresd so the console
configuration is now set in the board file.
Signed-off-by: NOtavio Salvador <otavio@ossystems.com.br>
Acked-by: NStefano Babic <sbabic@denx.de>

mx6qsabreauto is a board based on mx6q SoC with the following features:
- 2GB of DDR3
- 2 USB ports
- 1 HDMI output port
- SPI NOR
- 2 LVDS LCD ports
- Gigabit Ethernet
- Camera
- eMMC and SD card slot
- Multichannel Audio
- CAN
- SATA
- NAND
- PCIE
- Video Input

Add very basic support for it.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>