[U-Boot] [v2 PATCH 0/3] Add support for booting mx28 boards without a battery

[Graeme Russ]

This series adds support for booting mx28 based boards which do not
include a battery as per Freescale application note AN4199

Patch 1 adds SPL debug output to help track down where early init
of the power block and SDRAM fails (define DEBUG and
CONFIG_SPL_SERIAL_SUPPORT in order to enable)

Patch 2 (which implements booting without a battery) is based on a patch
submitted to the Freescale community forums by Damien Gotfroi (define
CONFIG_SYS_MXS_VDD5V_ONLY to enable)

Patch 3 adds a useful halt upon completion of SPL in the case that the
board is booted in JTAG mode. If SPL debug is enabled, 'Waiting for JTAG
user' will be printed to the console when SPL has completed

Changes in v2
 - Dropped patch which adds Reachtech G2C1 board in order to allow the
   'no battery' functionality to be mainlined as soon as possible
 - Removed the patch which moved the PLL power up from spl_power_init.c
   to spl_mem_init.c - This patch will be considered in future rework
   of the power block and SDRAM initialisation code


Graeme Russ (3):
  arm: mxs: Add debug outputs and comments to mxs SPL source files
  arm: mxs: Enable booting of mx28 without battery
  arm: mxs: Add 'Wait for JTAG user' if booted in JTAG mode

 arch/arm/cpu/arm926ejs/mxs/spl_boot.c       |   7 ++
 arch/arm/cpu/arm926ejs/mxs/spl_lradc_init.c |  13 +++-
 arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c   |  18 +++++
 arch/arm/cpu/arm926ejs/mxs/spl_power_init.c | 109 ++++++++++++++++++++++++++--
 arch/arm/include/asm/arch-mxs/sys_proto.h   |  17 +++++
 5 files changed, 157 insertions(+), 7 deletions(-)

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1.9.3