12.0.1
LibreELEC:~ # kmsprint
Connector 0 (32) HDMI-A-1 (connected)
  Encoder 0 (31) TMDS
    Crtc 2 (88) 1920x1080@60.00 148.500 1920/88/44/148/+ 1080/4/5/36/+ 60 (60.00) D
      Plane 4 (100) fb-id: 303 (crtcs: 0 1 2 3) 0,0 1920x1080 -> 0,0 1920x1080 (XR24 AR24 AB24 XB24 RG16 BG16 AR15 XR15 RG24 BG24 YU16 YV16 YU24 YV24 YU12 YV12 NV12 NV21 NV16 NV61 P030 XR30 AR30 AB30 XB30 RGB8 BGR8 XR12 AR12 XB12 AB12 BX12 BA12 RX12 RA12)
        FB 303 1920x1080 XR24
Connector 1 (42) HDMI-A-2 (disconnected)
  Encoder 1 (41) TMDS

LibreELEC:~ # kmsprint -p
Connector 0 (32) HDMI-A-1 (connected)
    EDID (1) = blob-id 301 len 256 (immutable)
    DPMS (2) = 0 (On) [On=0|Standby=1|Suspend=2|Off=3]
    TILE (4) = blob-id 0 (immutable)
    link-status (5) = 0 (Good) [Good=0|Bad=1]
    non-desktop (6) = 0 [0 - 1] (immutable)
    HDR_OUTPUT_METADATA (7) = blob-id 0
    CRTC_ID (20) = object id 88
    left margin (33) = 0 [0 - 100]
    right margin (34) = 0 [0 - 100]
    top margin (35) = 0 [0 - 100]
    bottom margin (36) = 0 [0 - 100]
    Colorspace (37) = 0 (Default) [Default=0|SMPTE_170M_YCC=1|BT709_YCC=2|XVYCC_601=3|XVYCC_709=4|SYCC_601=5|opYCC_601=6|opRGB=7|BT2020_CYCC=8|BT2020_RGB=9|BT2020_YCC=10|DCI-P3_RGB_D65=11|DCI-P3_RGB_Theater=12]
    max bpc (38) = 8 [8 - 12]
    Broadcast RGB (39) = 0 (Automatic) [Automatic=0|Full=1|Limited 16:235=2]
    Output format (40) = 0 (Automatic) [Automatic=0|RGB=1|YCbCr 4:2:2=2|YCbCr 4:4:4=3]
  Encoder 0 (31) TMDS
    Crtc 2 (88) 1920x1080@60.00 148.500 1920/88/44/148/+ 1080/4/5/36/+ 60 (60.00) D
        OUT_FENCE_PTR (19) = 0 [0 - 18446744073709551615]
        ACTIVE (22) = 1 [0 - 1]
        MODE_ID (23) = blob-id 307 len 68
        VRR_ENABLED (24) = 0 [0 - 1]
      Plane 4 (100) fb-id: 304 (crtcs: 0 1 2 3) 0,0 1920x1080 -> 0,0 1920x1080 (XR24 AR24 AB24 XB24 RG16 BG16 AR15 XR15 RG24 BG24 YU16 YV16 YU24 YV24 YU12 YV12 NV12 NV21 NV16 NV61 P030 XR30 AR30 AB30 XB30 RGB8 BGR8 XR12 AR12 XB12 AB12 BX12 BA12 RX12 RA12)
          type (8) = 0 (Overlay) [Overlay=0|Primary=1|Cursor=2] (immutable)
          SRC_X (9) = 0 [0 - 4294967295]
          SRC_Y (10) = 0 [0 - 4294967295]
          SRC_W (11) = 125829120 [0 - 4294967295]
          SRC_H (12) = 70778880 [0 - 4294967295]
          CRTC_X (13) = 0 [-2147483648 - 2147483647]
          CRTC_Y (14) = 0 [-2147483648 - 2147483647]
          CRTC_W (15) = 1920 [0 - 2147483647]
          CRTC_H (16) = 1080 [0 - 2147483647]
          FB_ID (17) = object id 304
          IN_FENCE_FD (18) = -1 [-1 - 2147483647]
          CRTC_ID (20) = object id 88
          IN_FORMATS (30) = blob-id 101 len 288 (immutable)
          alpha (102) = 65535 [0 - 65535]
          pixel blend mode (103) = 0 (Pre-multiplied) [Pre-multiplied=0|Coverage=1|None=2]
          rotation (104) = 0x1 (rotate-0) [rotate-0=0x1|rotate-180=0x4|reflect-x=0x10|reflect-y=0x20]
          COLOR_ENCODING (105) = 1 (ITU-R BT.709 YCbCr) [ITU-R BT.601 YCbCr=0|ITU-R BT.709 YCbCr=1|ITU-R BT.2020 YCbCr=2]
          COLOR_RANGE (106) = 0 (YCbCr limited range) [YCbCr limited range=0|YCbCr full range=1]
          CHROMA_SITING_H (107) = 0 [0 - 65536]
          CHROMA_SITING_V (108) = 0 [0 - 65536]
          zpos (109) = 1 [1 - 17]
        FB 304 1920x1080 XR24
Connector 1 (42) HDMI-A-2 (disconnected)
    EDID (1) = blob-id 0 (immutable)
    DPMS (2) = 0 (On) [On=0|Standby=1|Suspend=2|Off=3]
    TILE (4) = blob-id 0 (immutable)
    link-status (5) = 0 (Good) [Good=0|Bad=1]
    non-desktop (6) = 0 [0 - 1] (immutable)
    HDR_OUTPUT_METADATA (7) = blob-id 0
    CRTC_ID (20) = object id 0
    left margin (33) = 0 [0 - 100]
    right margin (34) = 0 [0 - 100]
    top margin (35) = 0 [0 - 100]
    bottom margin (36) = 0 [0 - 100]
    Colorspace (43) = 0 (Default) [Default=0|SMPTE_170M_YCC=1|BT709_YCC=2|XVYCC_601=3|XVYCC_709=4|SYCC_601=5|opYCC_601=6|opRGB=7|BT2020_CYCC=8|BT2020_RGB=9|BT2020_YCC=10|DCI-P3_RGB_D65=11|DCI-P3_RGB_Theater=12]
    max bpc (44) = 8 [8 - 12]
    Broadcast RGB (45) = 0 (Automatic) [Automatic=0|Full=1|Limited 16:235=2]
    Output format (46) = 0 (Automatic) [Automatic=0|RGB=1|YCbCr 4:2:2=2|YCbCr 4:4:4=3]
  Encoder 1 (41) TMDS