iMX6Quad GPU AXI BUS Error

[Salvatore1z]

Hello,

I'm using a custom board with an iMX6Quad.

I'm experiancing the following errors (visible through dmesg):

[  414.734840] GPU[0]: AXI BUS ERROR, AQAxiStatus=0x51

[  414.734853] GPU[0]: AXI BUS ERROR, AQAxiStatus=0x51

[  414.746968] GPU[0]: AXI BUS ERROR, AQAxiStatus=0x51

[  414.746990] GPU[0]: AXI BUS ERROR, AQAxiStatus=0x51

[  414.906489] GPU[0]: AXI BUS ERROR, AQAxiStatus=0x51

[  414.906508] GPU[0]: AXI BUS ERROR, AQAxiStatus=0x51

[  414.926427] GPU[0]: AXI BUS ERROR, AQAxiStatus=0x51

[  414.926449] GPU[0]: AXI BUS ERROR, AQAxiStatus=0x51

[  414.930801] GPU[0]: AXI BUS ERROR, AQAxiStatus=0x1

[  414.930818] GPU[0]: AXI BUS ERROR, AQAxiStatus=0x1

[  414.932716] GPU[0]: AXI BUS ERROR, AQAxiStatus=0x51

[  414.932739] GPU[0]: AXI BUS ERROR, AQAxiStatus=0x51

[  414.948729] GPU[0]: AXI BUS ERROR, AQAxiStatus=0x51

[  414.948746] GPU[0]: AXI BUS ERROR, AQAxiStatus=0x51

[  414.954694] GPU[0]: AXI BUS ERROR, AQAxiStatus=0x51

[  414.954717] GPU[0]: AXI BUS ERROR, AQAxiStatus=0x51

[  421.283945] GPU[0]: AXI BUS ERROR, AQAxiStatus=0x1

[  421.284039] GPU[0]: AXI BUS ERROR, AQAxiStatus=0x1

[  421.287336] GPU[0]: AXI BUS ERROR, AQAxiStatus=0x51

[  421.287355] GPU[0]: AXI BUS ERROR, AQAxiStatus=0x51

[  422.366293] GPU[0]: AXI BUS ERROR, AQAxiStatus=0x51

[  422.366321] GPU[0]: AXI BUS ERROR, AQAxiStatus=0x51

[  422.448952] GPU[0]: AXI BUS ERROR, AQAxiStatus=0x1

[  422.448970] GPU[0]: AXI BUS ERROR, AQAxiStatus=0x1

[  422.450486] GPU[0]: AXI BUS ERROR, AQAxiStatus=0x51

[  422.450504] GPU[0]: AXI BUS ERROR, AQAxiStatus=0x51

[  451.963425] [galcore]: GPU[0] hang, automatic recovery.

[  451.963472] [galcore]: recovery done

[  512.083442] [galcore]: GPU[0] hang, automatic recovery.

[  512.083489] [galcore]: recovery done

Any idea about the reasons for such errors?

The problem is not systematic. I'm running a Wayland based HMI.

How do I know the meaning of values reported by AQAxiStatus.

Is there any way to collect more information about this issue?

The Kernel version is 3.14.28.

Thank you.

Salvatore