mirror of
https://github.com/smaeul/u-boot.git
synced 2025-10-27 10:08:20 +00:00
ae525189f0
The comments on the QSPI pad assignments erronously swapped the qspi1_d0 and qspi1_d1 functionality and could cause confusion. QSPI1_D[0] is in fact muxed on pad U1 (gpmc_a16), and QSPI1_D[1] - on pad P3 (gpmc_a17). Fixing comments. Signed-off-by: Lubomir Popov <l-popov@ti.com> Reviewed-by: Tom Rini <trini@ti.com>
Summary
=======
This document covers various features of the 'dra7xx_evm' build and some
related uses.
eMMC boot partition use
=======================
It is possible, depending on SYSBOOT configuration to boot from the eMMC
boot partitions using (name depending on documentation referenced)
Alternative Boot operation mode or Boot Sequence Option 1/2. In this
example we load MLO and u-boot.img from the build into DDR and then use
'mmc bootbus' to set the required rate (see TRM) and 'mmc partconfig' to
set boot0 as the boot device.
U-Boot # setenv autoload no
U-Boot # usb start
U-Boot # dhcp
U-Boot # mmc dev 1 1
U-Boot # tftp ${loadaddr} dra7xx/MLO
U-Boot # mmc write ${loadaddr} 0 100
U-Boot # tftp ${loadaddr} dra7xx/u-boot.img
U-Boot # mmc write ${loadaddr} 300 400
U-Boot # mmc bootbus 1 2 0 2
U-Boot # mmc partconf 1 1 1 0
U-Boot # mmc rst-function 1 1