Okay, so after a lot of digging i might found the reason why i am having a lot of trouble with this display and the orange pi.
 
	I extracted edid from x64 Ubuntu (which is partiatly working, since it is also not outputing in display native mode), and it seems that the native resolution is only beeing specified in the DisplayID Extension Block and not in the Base Blocks: 
	 
 
cat /sys/class/drm/card0-HDMI-A-1/edid | edid-decode
edid-decode (hex):
00 ff ff ff ff ff ff 00 4c 2d 52 70 58 4a 58 43
ff ff 01 03 80 77 22 78 2a c7 25 b1 4b 46 a8 26
0e 50 54 bf ef 80 71 4f 81 00 81 c0 81 80 a9 c0
b3 00 95 00 d1 c0 1a 68 00 a0 f0 38 1f 40 30 20
3a 00 a9 50 41 00 00 1a 00 00 00 fd 00 32 4b 1e
b7 3c 00 0a 20 20 20 20 20 20 00 00 00 fc 00 4c
43 34 39 47 39 35 54 0a 20 20 20 20 00 00 00 ff
00 48 34 5a 54 31 30 31 31 34 38 0a 20 20 03 24
f0 02 70 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 9e
02 03 3d f1 49 90 61 60 1f 04 13 12 03 5a 23 09
07 07 83 01 00 00 e2 00 4f e3 05 c0 00 67 03 0c
00 10 00 b8 3c 67 d8 5d c4 01 78 80 03 e6 06 05
01 8b 73 12 e2 0f 06 e5 01 8b 84 90 01 56 5e 00
a0 a0 a0 29 50 30 20 35 00 a9 50 41 00 00 1a 58
4d 00 b8 a1 38 14 40 f8 2c 45 00 a9 50 41 00 00
1e 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 71
70 12 79 00 00 03 01 28 33 b7 00 88 ff 13 9f 00
2f 80 1f 00 9f 05 28 00 02 00 09 00 6e c2 00 08
ff 09 9f 00 2f 80 1f 00 9f 05 54 00 02 00 04 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 d6 90
----------------
Block 0, Base EDID:
  EDID Structure Version & Revision: 1.3
  Vendor & Product Identification:
    Manufacturer: SAM
    Model: 28754
    Serial Number: <redacted>
    Model year: 2245
  Basic Display Parameters & Features:
    Digital display
    Maximum image size: 119 cm x 34 cm
    Gamma: 2.20
    DPMS levels: Off
    RGB color display
    First detailed timing is the preferred timing
  Color Characteristics:
    Red  : 0.6943, 0.2929
    Green: 0.2744, 0.6591
    Blue : 0.1484, 0.0566
    White: 0.3134, 0.3291
  Established Timings I & II:
    IBM     :   720x400    70.081663 Hz   9:5     31.467 kHz     28.320000 MHz
    DMT 0x04:   640x480    59.940476 Hz   4:3     31.469 kHz     25.175000 MHz
    Apple   :   640x480    66.666667 Hz   4:3     35.000 kHz     30.240000 MHz
    DMT 0x05:   640x480    72.808802 Hz   4:3     37.861 kHz     31.500000 MHz
    DMT 0x06:   640x480    75.000000 Hz   4:3     37.500 kHz     31.500000 MHz
    DMT 0x08:   800x600    56.250000 Hz   4:3     35.156 kHz     36.000000 MHz
    DMT 0x09:   800x600    60.316541 Hz   4:3     37.879 kHz     40.000000 MHz
    DMT 0x0a:   800x600    72.187572 Hz   4:3     48.077 kHz     50.000000 MHz
    DMT 0x0b:   800x600    75.000000 Hz   4:3     46.875 kHz     49.500000 MHz
    Apple   :   832x624    74.551266 Hz   4:3     49.726 kHz     57.284000 MHz
    DMT 0x10:  1024x768    60.003840 Hz   4:3     48.363 kHz     65.000000 MHz
    DMT 0x11:  1024x768    70.069359 Hz   4:3     56.476 kHz     75.000000 MHz
    DMT 0x12:  1024x768    75.028582 Hz   4:3     60.023 kHz     78.750000 MHz
    DMT 0x24:  1280x1024   75.024675 Hz   5:4     79.976 kHz    135.000000 MHz
    Apple   :  1152x870    75.061550 Hz 192:145   68.681 kHz    100.000000 MHz
  Standard Timings:
    DMT 0x15:  1152x864    75.000000 Hz   4:3     67.500 kHz    108.000000 MHz
    DMT 0x1c:  1280x800    59.810326 Hz  16:10    49.702 kHz     83.500000 MHz
    DMT 0x55:  1280x720    60.000000 Hz  16:9     45.000 kHz     74.250000 MHz
    DMT 0x23:  1280x1024   60.019740 Hz   5:4     63.981 kHz    108.000000 MHz
    DMT 0x53:  1600x900    60.000000 Hz  16:9     60.000 kHz    108.000000 MHz (RB)
    DMT 0x3a:  1680x1050   59.954250 Hz  16:10    65.290 kHz    146.250000 MHz
    DMT 0x2f:  1440x900    59.887445 Hz  16:10    55.935 kHz    106.500000 MHz
    DMT 0x52:  1920x1080   60.000000 Hz  16:9     67.500 kHz    148.500000 MHz
  Detailed Timing Descriptors:
    DTD 1:  3840x1080   59.968497 Hz  32:9     66.625 kHz    266.500000 MHz (1193 mm x 336 mm)
                 Hfront   48 Hsync  32 Hback   80 Hpol P
                 Vfront    3 Vsync  10 Vback   18 Vpol N
    Display Range Limits:
      Monitor ranges (GTF): 50-75 Hz V, 30-183 kHz H, max dotclock 600 MHz
    Display Product Name: 'LC49G95T'
    Display Product Serial Number: <redacted>
  Extension blocks: 3
Checksum: 0x24
----------------
Block 1, Block Map Extension Block:
  Block   2: CTA-861 Extension Block
  Block   3: DisplayID Extension Block
Checksum: 0x9e
----------------
Block 2, CTA-861 Extension Block:
  Revision: 3
  Underscans IT Video Formats by default
  Basic audio support
  Supports YCbCr 4:4:4
  Supports YCbCr 4:2:2
  Native detailed modes: 1
  Video Data Block:
    VIC  16:  1920x1080   60.000000 Hz  16:9     67.500 kHz    148.500000 MHz (native)
    VIC  97:  3840x2160   60.000000 Hz  16:9    135.000 kHz    594.000000 MHz
    VIC  96:  3840x2160   50.000000 Hz  16:9    112.500 kHz    594.000000 MHz
    VIC  31:  1920x1080   50.000000 Hz  16:9     56.250 kHz    148.500000 MHz
    VIC   4:  1280x720    60.000000 Hz  16:9     45.000 kHz     74.250000 MHz
    VIC  19:  1280x720    50.000000 Hz  16:9     37.500 kHz     74.250000 MHz
    VIC  18:   720x576    50.000000 Hz  16:9     31.250 kHz     27.000000 MHz
    VIC   3:   720x480    59.940060 Hz  16:9     31.469 kHz     27.000000 MHz
    VIC  90:  2560x1080   60.000000 Hz  64:27    66.000 kHz    198.000000 MHz
  Audio Data Block:
    Linear PCM:
      Max channels: 2
      Supported sample rates (kHz): 48 44.1 32
      Supported sample sizes (bits): 24 20 16
  Speaker Allocation Data Block:
    FL/FR - Front Left/Right
  Video Capability Data Block:
    YCbCr quantization: No Data
    RGB quantization: Selectable (via AVI Q)
    PT scan behavior: No Data
    IT scan behavior: Supports both over- and underscan
    CE scan behavior: Supports both over- and underscan
  Colorimetry Data Block:
    BT2020YCC
    BT2020RGB
  Vendor-Specific Data Block (HDMI), OUI 00-0C-03:
    Source physical address: 1.0.0.0
    Supports_AI
    DC_36bit
    DC_30bit
    DC_Y444
    Maximum TMDS clock: 300 MHz
  Vendor-Specific Data Block (HDMI Forum), OUI C4-5D-D8:
    Version: 1
    Maximum TMDS Character Rate: 600 MHz
    SCDC Present
    Supports 12-bits/component Deep Color 4:2:0 Pixel Encoding
    Supports 10-bits/component Deep Color 4:2:0 Pixel Encoding
  HDR Static Metadata Data Block:
    Electro optical transfer functions:
      Traditional gamma - SDR luminance range
      SMPTE ST2084
    Supported static metadata descriptors:
      Static metadata type 1
    Desired content max luminance: 139 (1015.241 cd/m^2)
    Desired content max frame-average luminance: 115 (603.666 cd/m^2)
    Desired content min luminance: 18 (0.051 cd/m^2)
  YCbCr 4:2:0 Capability Map Data Block:
    VIC  97:  3840x2160   60.000000 Hz  16:9    135.000 kHz    594.000000 MHz
    VIC  96:  3840x2160   50.000000 Hz  16:9    112.500 kHz    594.000000 MHz
  Vendor-Specific Video Data Block (HDR10+), OUI 90-84-8B:
    Application Version: 1
  Detailed Timing Descriptors:
    DTD 2:  2560x1440   59.950550 Hz  16:9     88.787 kHz    241.500000 MHz (1193 mm x 336 mm)
                 Hfront   48 Hsync  32 Hback   80 Hpol P
                 Vfront    3 Vsync   5 Vback   33 Vpol N
    DTD 3:  2560x1080   60.000000 Hz  64:27    66.000 kHz    198.000000 MHz (1193 mm x 336 mm)
                 Hfront  248 Hsync  44 Hback  148 Hpol P
                 Vfront    4 Vsync   5 Vback   11 Vpol P
Checksum: 0x71
----------------
Block 3, DisplayID Extension Block:
  Version: 1.2
  Extension Count: 0
  Display Product Type: Extension Section
  Video Timing Modes Type 1 - Detailed Timings Data Block:
    DTD:  5120x1440   59.976879 Hz   0:0     88.826 kHz    469.000000 MHz (aspect undefined, no 3D stereo, preferred)
               Hfront   48 Hsync  32 Hback   80 Hpol P
               Vfront    3 Vsync  10 Vback   28 Vpol N
    DTD:  2560x1440  119.997589 Hz   0:0    182.996 kHz    497.750000 MHz (aspect undefined, no 3D stereo)
               Hfront   48 Hsync  32 Hback   80 Hpol P
               Vfront    3 Vsync   5 Vback   77 Vpol N
  Checksum: 0xd6
Checksum: 0x90
	 
 
	When i connect the display to orange pi and check the modes in /sys/class/drm/card0-DP-1/modes , i can only find the modes that match the Block 0 and none from the DisplayID block from edid.
 
	So the question is, is kernel configured to check the DisplayID block from edid?
 
	Is kernel compiled with CONFIG_DRM_LOAD_EDID_FIRMWARE ? 
 
	 
 
	P.S. - I think i might be hitting a problem that might be above Armbian and maybe kernel / rockchip (?) related. If so, do you know where can i seek for further help?
 
	 
 
	Once Again, Thank You for your support and hard work