~~NOCACHE~~
{{template>intern:templates:tabs_bootstrap_new|lang="intern"|mod_name="tqma7x"|mod_name_head="TQMa7x"|mod_arch="arm"|bsp_name="Linux"|bsp_name_head="Linux"|build_system="ptxdist"|build_system_head="PTXdist"}}
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===== Known Issues =====
===== U-Boot BSP Rev.0105 ======
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==== U-Boot ====
^ USB devices cannot be recognized after resetting the USB Bus ^^
^ Affects        | USB highspeed Host  |
^ Issue     | USB devices cannot be recognized after using command **usb reset** or **usb stop**   |
^ Effect    | USB devices cannot be recognized after using command **usb reset** or **usb stop**   |
^ Solution / Workaround  | TDB   
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===== Linux BSP Rev.0101 ======
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==== U-Boot and Linux ====
^ USB does not work with TQMa7S with MBa7x ^^
^ Affects        | USB highspeed Host  |
^ Issue     | USB highspeed Host does not work with TQMa7S  |
^ Effect    | USB highspeed Host does not work with TQMa7S   |
^ Solution / Workaround  | Will be fixed in the next BSP revision   |
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===== MBa7x ======
==== RS485 ====
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^ RS485 bus block in half-duplex mode  ^^
^ Affects   | RS485 via UARTx   |
^ Issue     | During i.MX7 reset the UARTx.CTS# pin is low by default (CPU internal pull down)  |
^ Effect    | Using the MBa7x RS485 circuitry in a half-duplex slave device or half-duplex multi-master environment may block the RS485 bus during i.MX7 reset.\\ The bus is released as soon as the UARTx.CTS# pin is properly configured by software (e.g. U-Boot, Linux, etc.)  |
^ Solution / Workaround  | Add a 10k pull up to the UARTx.CTS# signal on carrier board  |
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