On Wed, May 21, 2014 at 12:57:21PM -0400, Tom Rini wrote:
We have two contexts for booting these platforms. One is SPL which is roughly: reset, cpu_init_crit, lowlevel_init, s_init, sdram_init, _main, board_init_f from SPL, ... then U-Boot loads. The other is a memory-mapped XIP case (NOR or QSPI) where we do not run an SPL. In this case we go, roughly: reset, cpu_init_crit, lowlevel_init, s_init, _main, regular board_init_f.
In the first case s_init will set a valid gd and then be able to call sdram_init which in many cases will need i2c (which needs a valid gd for gd->cur_i2c_bus). In this second case we must (and are able to and should) defer sdram_init() into dram_init() called by board_init_f as gd will have been set in _main and cleared in board_init_f.
Signed-off-by: Tom Rini trini@ti.com
Applied to u-boot-ti/master, thanks!