We use JetPack7.1/L4T 38.4 SDK and custom PCB to setup 2 x DP and 1x HDMI output.
DP0 and HDMI1 can display. DP2 doesn’t used.
DP3 has following exception log when cable plugin.
Exception Type: 0
DFAR: 0xd9684094 DFSR: 0x00001008 ADFSR: 0x00500000
IFAR: 0x00000000 IFSR: 0x00000000 AIFSR: 0x00000000
PC: 0x00026f4e LR: 0x00026f4d SP: 0x0007ded0 PSR: 0x2000003f
R0: 0x00000001 R1: 0x40084738 R2: 0x000000c6 R3: 0xd9680000
R4: 0x00041050 R5: 0x00000005 R6: 0x00004094 R7: 0x0007ded0
R8: 0x00000004 R9: 0x00000003 R10: 0x00000000 R11: 0x41c956c4
R12: 0x408ac701
=== Reading DCB blob ===
=== Chip Variant T26X ===
########## Tegra DCB BLOB ###############
########### Display Devices #############
Display Devices::
Display Devices : [0]
Type : [DP]
CCB : [0]
Heads : 0:[Y] 1:[Y]
Sor : [0 ]
DP Lane Count : [4]
DP Link Rate : [8.1GHz]
External Link Type : DP
Connector : [0]
Bus : [0]
Pad Link : [0]
Display Devices : [1]
Type : [TMDS]
CCB : [1]
Heads : 0:[Y] 1:[Y]
Sor : [0 ]
HDMI capable : [1]
Connector : [1]
Bus : [1]
Pad Link : [1]
Display Devices : [3]
Type : [DP]
CCB : [3]
Heads : 0:[Y] 1:[Y]
Sor : [1 ]
DP Lane Count : [4]
DP Link Rate : [8.1GHz]
External Link Type : DP
Connector : [3]
Bus : [3]
Pad Link : [3]
############### CCB Entries ###############
CCB::
*CCB entries that have both I2C and AUX ports unused (value = 31) are not displayed
CCB Index : 0
I2C Port : [6]
AUX Port : [0]
CCB Index : 1
I2C Port : [10]
AUX Port : [1]
CCB Index : 2
I2C Port : [4]
AUX Port : [2]
CCB Index : 3
I2C Port : [8]
AUX Port : [3]
########### Connector entries #############
Connectors::
Connector Index : 0x0
Type : [DP]
Hotplug : A:[Y]
Connector Index : 0x1
Type : [HDMI]
Hotplug : A:[Y]
Connector Index : 0x3
Type : [DP]
Hotplug : A:[Y]
################# ******* #################