u-boot-brain

brain-hackers_pepepper-mirror/u-boot-brain

mirror of https://github.com/brain-hackers/u-boot-brain synced 2024-06-09 23:36:03 +09:00

History

Vignesh R 900e2104d8 ARM : DRA7: Switch QSPI to use MODE-0 at 64MHz According to Data Manual(SPRS915P) of AM572x, TI QSPI controller on DRA74 EVM(rev 1.1+) can support up to 64MHz in MODE-0, whereas MODE-3 is limited to 48MHz. Hence, switch to MODE-0 for better throughput. Also, add IODelay parameters for the same. Signed-off-by: Vignesh R <vigneshr@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>		2016-02-15 12:04:46 -05:00
..
evm.c	omap-common: Common serial and usbethaddr functions based on die id	2015-10-22 14:17:22 -04:00
Kconfig	dra7xx: Move CONS_INDEX to Kconfig and enable CONFIG_SPL_STACK_ADDR	2015-08-12 20:48:07 -04:00
MAINTAINERS	board/ti: Update MAINTAINERS entries with more boards	2015-11-10 09:20:27 -05:00
Makefile	board: ti: convert makefiles to Kbuild style	2013-10-31 13:26:44 -04:00
mux_data.h	ARM : DRA7: Switch QSPI to use MODE-0 at 64MHz	2016-02-15 12:04:46 -05:00
README	mmc: Add 'mmc rst-function' sub-command	2014-04-02 13:02:58 +03:00

README

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