The RCW directories names for the T2080RDB board
conforming to the following naming convention:

abcdef_g_h_i (default RRFFXX_P_66_15) nomenclature means:
a   = 'R'  indicates RGMII1 @ DTSEC3 is supported
b   = 'R'  indicates RGMII2 @ DTSEC4 is supported
c,d = 'F'  indicates 10G SFP+ fiber ports are supported
e,f = 'X'  indicates 10G Base-T copper ports are supported
g   = 'P'  indicates PCIe4 x4 in the PCI slot
h   = '66' indicates SerDes1 protocol 0x66
i   = '15' indicates SerDes2 protocol 0x15

Default Core/Platform/DDR = 1800MHz/600MHz/1866MT/s
User can change the RCW configuraton for different frequency
according to actual requirements.