I want to ask you about the VDD_ARM_CAP.
The default value is 0b10000(1.100V) in PMU_REG_CORE[REG2_TARG].
I think that it needs to change for 1.150V.
I refer to the Table 8. Operating Ranges in IMX6SDLAEC.
I think that it is able to change voltage level with REG2_TARG bits in PMU_REG_CORE register.
Does it change the PMU_REG_CORE[REG2_TARG] value from 0b10000 to 0b10011 in ROM code?