The boot mode pins are latched when the system reset is deasserted
and determine which device the system should load a boot image from.
+config DRAM_INIT
+ bool
+ default SPL_BUILD
+
+choice
+ prompt "DDR3 Frequency select"
+ depends on DRAM_INIT
+
+config DDR_FREQ_1600
+ bool "DDR3 1600"
+ depends on MACH_PH1_PRO4 || MACH_PH1_LD4
+
+config DDR_FREQ_1333
+ bool "DDR3 1333"
+ depends on MACH_PH1_LD4 || MACH_PH1_SLD8
+
+endchoice
+
+config DDR_FREQ
+ int
+ default 1333 if DDR_FREQ_1333
+ default 1600 if DDR_FREQ_1600
+
endmenu