[U-Boot] rockchip: rk3399: TPL: rockpro64: Wrong memory size detected

[Kurt Miller]

The board has 4G memory but only 2G is detected by TPL. Please
let me know if additional information is needed.

With u-boot master TPL output:

U-Boot TPL 2019.10-rc3-00020-ge4b8dd9b34-dirty (Aug 28 2019 - 17:26:44)
LPDDR4, 50MHz
BW=32 Col=10 Bk=8 CS0 Row=15 CS=1 Die BW=16 Size=1024MB
LPDDR4, 50MHz
BW=32 Col=10 Bk=8 CS0 Row=15 CS=1 Die BW=16 Size=1024MB
256B stride
Trying to boot from BOOTROM
Returning to boot ROM...

With rkbin rk3399_ddr_800MHz_v1.23.bin output:

DDR Version 1.23 20190709                                                    
In                                                                           
channel 0                                                                    
CS = 0                                                                       
MR0=0xB8                                                                     
MR4=0x2                                 
MR5=0xFF                                
MR8=0x10                                
MR12=0x72                               
MR14=0x72                               
MR18=0x0                                
MR19=0x0
MR24=0x8
MR25=0x0
channel 1
CS = 0
MR0=0xB8
MR4=0x2
MR5=0xFF
MR8=0x10
MR12=0x72
MR14=0x72
MR18=0x0
MR19=0x0
MR24=0x8
MR25=0x0
channel 0 training pass!
channel 1 training pass!
change freq to 416MHz 0,1
Channel 0: LPDDR4,416MHz
Bus Width=32 Col=10 Bank=8 Row=16 CS=1 Die Bus-Width=16 Size=2048MB
Channel 1: LPDDR4,416MHz
Bus Width=32 Col=10 Bank=8 Row=16 CS=1 Die Bus-Width=16 Size=2048MB
256B stride
channel 0
CS = 0
MR0=0xB8
MR4=0x2
MR5=0xFF
MR8=0x10
MR12=0x72
MR14=0x72
MR18=0x0
MR19=0x0
MR24=0x8
MR25=0x0
channel 1
CS = 0
MR0=0xB8
MR4=0x2
MR5=0xFF
MR8=0x10
MR12=0x72
MR14=0x72
MR18=0x0
MR19=0x0
MR24=0x8
MR25=0x0
channel 0 training pass!
channel 1 training pass!
channel 0, cs 0, advanced training done
channel 1, cs 0, advanced training done
change freq to 856MHz 1,0
ch 0 ddrconfig = 0x101, ddrsize = 0x40
ch 1 ddrconfig = 0x101, ddrsize = 0x40
pmugrf_os_reg[2] = 0x32C1F2C1, stride = 0xD
OUT