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u-boot/board/wandboard
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Heinrich Schuchardt a1f79c2170 arm: wandboard: move CONFIG_MXC_UART to defconfig 
For using a debug UART on the Wandboard CONFIG_MXC_UART=y must be set in
the .config file.

To avoid duplicate definitions move the setting from
include/configs/wandboard.h to configs/wandboard_defconfig.

Document the debug UART settings in the README.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
2020-06-22 17:43:31 +02:00
..
Kconfig mx6: remove SYS_SOC from board Kconfig 2015-09-13 10:37:29 +02:00
MAINTAINERS imx6: wandboard: add device tree 2019-04-13 20:30:09 +02:00
Makefile wandboard: Rework Makefile to prevent spl.o from being built 2019-06-11 10:42:48 +02:00
README arm: wandboard: move CONFIG_MXC_UART to defconfig 2020-06-22 17:43:31 +02:00
spl.c common: Drop linux/delay.h from common header 2020-05-18 21:19:23 -04:00
wandboard.c common: Drop linux/delay.h from common header 2020-05-18 21:19:23 -04:00

README 

U-Boot for Wandboard
--------------------

This file contains information for the port of U-Boot to the Wandboard.

Wandboard is a development board that has three variants based on the following
SoCs: mx6 quad, mx6 quad plus, mx6 dual lite and mx6 solo.

For more details about Wandboard, please refer to:
http://www.wandboard.org/

Building U-Boot for Wandboard
-----------------------------

To build U-Boot for the Wandboard:

$ make wandboard_config
$ make

Flashing U-Boot into the SD card
--------------------------------

- After the 'make' command completes, the generated 'SPL' binary must be
flashed into the SD card;

$ sudo dd if=SPL of=/dev/mmcblk0 bs=1k seek=1; sync

(Note - the SD card node may vary, so adjust this as needed).

- Flash the u-boot.img image into the SD card:

sudo dd if=u-boot-dtb.img of=/dev/mmcblk0 bs=1k seek=69; sync

- Insert the SD card into the slot located in the bottom of the board (same side
as the mx6 processor)

- Connect the serial cable to the host PC

- Power up the board and U-Boot messages will appear in the serial console.

Debug UART
----------

The following settings provide a debug UART for the Wandboard:

CONFIG_DEBUG_UART=y
CONFIG_DEBUG_UART_MXC=y
CONFIG_DEBUG_UART_BASE=0x02020000
CONFIG_DEBUG_UART_CLOCK=80000000