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Embedded module TQMa8Xx - YOCTO Linux BSP documentation
Display port interface is not working
Details | |
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Effect | Display Port interface is not working on MBa8Xx |
Issue | SN65DSI86 DSI to embedded DisplayPort (eDP) bridge is not supported in BSP |
Affected Revisions | |
BSP | all revisions |
Module | all revisions |
Mainboard | all revisions (Please note: SN65DSI86 is no longer assembled on MBa8Xx ≥ Rev.0203) |
Solution | |
Fix | no plan to fix (due to missing driver support) |
Workaround | n/a (for custom designs use another DSI to DP bridge, e.g. TC9595) |
Linux kernel does not start with sumo.TQMa8.BSP.SW.0005 on MBa8Xx ≤ Rev.0101
Details | |
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Effect | Linux kernel does not start (no more messages after Starting kernel… ) |
Issue | PCIe requires external clock generator |
Affected Revisions | |
Bsp | sumo.TQMa8Xx.BSP.SW.0002 sumo.TQMa8.BSP.SW.0005 |
Module | all revisions |
Mainboard | MBa8Xx ≤ Rev.0101 |
Solution | |
Fix | Upgrade to MBa8Xx Rev.0102 (please contact TQ Support for further information) |
Workaround | Use devicetree with disabled PCIe interface (will be included in next BSP release) |
PCIe device detection
Details | |
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Effect | Some PCIe devices (e.g. PCIe switches) may not be properly detected |
Issue | PCIe signals clock, enable and reset do not comply to the PCIe specification |
Affected Revisions | |
Bsp | ≤ sumo.TQMa8.BSP.SW.0005 |
Module | all revisions |
Mainboard | MBa8Xx ≥ Rev.0102 |
Solution | |
Fix | TBD |
Workaround | Limit PCIe speed to Gen1 by using proper devicetree *-pcie-gen1.dtb (provided with BSP release sumo.TQMa8.BSP.SW.0006) |
No QSPI NOR Flash support in U-Boot
Details | |
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Effect | Executing sf probe in U-Boot causes the first byte of the QSPI NOR Flash to be overwritten |
Issue | QSPI NOR Flash is not suppported in U-Boot |
Affected Revisions | |
Bsp | sumo.TQMa8.BSP.SW.0005 |
Module | all revisions |
Mainboard | all revisions |
Solution | |
Fix | TBD |
Workaround | N/A |