u-boot/arch
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
..
arc arc: introduce "mdbtrick" target 2015-01-09 23:59:54 +03:00
arm arm: mxs: Enable booting of mx28 without battery 2015-02-10 12:48:50 +01:00
avr32 Kbuild: introduce Makefile in arch/$ARCH/ 2014-12-08 09:35:45 -05:00
blackfin blackfin: include <linux/compiler.h> rather than define __iomem 2014-12-08 09:35:46 -05:00
m68k m68k: remove TASREG board 2015-01-13 09:37:21 -05:00
microblaze Kbuild: introduce Makefile in arch/$ARCH/ 2014-12-08 09:35:45 -05:00
mips Replace <compiler.h> with <linux/compiler.h> 2014-12-08 09:35:46 -05:00
nds32 Kbuild: introduce Makefile in arch/$ARCH/ 2014-12-08 09:35:45 -05:00
nios2 Kbuild: introduce Makefile in arch/$ARCH/ 2014-12-08 09:35:45 -05:00
openrisc Kbuild: introduce Makefile in arch/$ARCH/ 2014-12-08 09:35:45 -05:00
powerpc powerpc: 74xx_7xx: remove 74xx_7xx cpu support 2015-01-16 10:24:39 -05:00
sandbox dm: i2c: dts: Add an I2C bus for sandbox 2014-12-11 13:18:43 -07:00
sh Replace <compiler.h> with <linux/compiler.h> 2014-12-08 09:35:46 -05:00
sparc Kbuild: introduce Makefile in arch/$ARCH/ 2014-12-08 09:35:45 -05:00
x86 x86: coreboot: Configure pci memory regions 2015-01-13 07:25:05 -08:00
.gitignore .gitignore: drop include/asm/proc from ignore pattern 2014-06-19 11:18:54 -04:00
Kconfig kconfig: move CONFIG_USE_PRIVATE_LIBGCC to Kconfig 2014-10-23 13:19:09 -04:00