u-boot/arch/arm
Graeme Russ 7a08603707 arm: mxs: Enable booting of mx28 without battery
Section 4.1.2 of Freescale Application Note AN4199 describes the
configuration required to operate the mx28 from a 5V source without a
battery.

This patch changes the behaviour of the dropout control of the DC-DC
converter (refer to section 11.12.9 of the mx28 Application Processor
Reference Manual - Document Number: MCIMX28RM, Rev 2, 08/2013) to the
following:
 - Always use 4P2 Linear Regulator if CONFIG_SYS_MXS_VDD5V_ONLY is defined
 - Switch between 4P2 Linear Regulator and Battery, using whichever has
   the highest voltage if CONFIG_SYS_MXS_VDD5V_ONLY isnot set (this is
   the same as the pre-patch behaviour)

Signed-off-by: Graeme Russ <gruss@tss-engineering.com>
Signed-off-by: Damien Gotfroi <dgotfroi@greenwatch.be>
2015-02-10 12:48:50 +01:00
..
cpu arm: mxs: Enable booting of mx28 without battery 2015-02-10 12:48:50 +01:00
dts Merge branch 'master' of git://git.denx.de/u-boot-spi 2015-01-08 13:50:38 -05:00
imx-common imx: i2c: Zap unnecessary malloc() calls 2014-12-30 14:05:48 +01:00
include imx: mx6: Fixed AIPS3 base address issue 2015-02-10 12:48:49 +01:00
lib arm: build arch memset/memcpy in Thumb2 mode 2015-01-09 10:20:22 -05:00
mvebu-common arm: kirkwood: Change naming of dram functions from km_foo() to mvebu_foo() 2014-10-23 09:59:21 -04:00
config.mk arm: build arch memset/memcpy in Thumb2 mode 2015-01-09 10:20:22 -05:00
Kconfig ot1200: select SUPPORT_SPL 2015-01-22 11:03:18 +01:00
Kconfig.debug arm: debug: add Kconfig entries for lowlevel debug 2014-10-26 22:23:12 +01:00
Makefile Kbuild: introduce Makefile in arch/$ARCH/ 2014-12-08 09:35:45 -05:00