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Shoval's avatar
Shoval
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2 years ago

UART 16550 compatible Linux device

Hello all, In my Quartus project I connected a UART 16550 compatible soft IP, and it is visible in the .sopcinfo generated. Later I build a .dtsi and a .dtb files using yocto angsrom, in the .dtsi ...
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aikeu's avatar
aikeu
Icon for Regular Contributor rankRegular Contributor
2 years ago

Hi Shoval,


May I know you are using which Soc device?

If offset is 0x00000000 and connected to 0xC0000000 it should be:

a_16550_uart_0: serial@0xC00000000


Thanks.

Regards,

Aik Eu


  • Shoval's avatar
    Shoval
    Icon for New Contributor rankNew Contributor
    2 years ago

    Hello Aik,

    I'm currently using the Cyclone V Soc evaluation board, #PN: DK-DEV-5CSXC6N.

    I modified to:

    a_16550_uart_0: serial@0xC00000000

    As advised, I don't think it did much.

    The device address has changed to 0xc0000000 under /proc/device-tree/ :

    currently : /proc/device-tree/sopc@0/bridge@0xc0000000/serial@0xc00000000/

    instead of: /proc/device-tree/sopc@0/bridge@0xc0000000/serial@0x000000000/

    So Linux compiled properly.

    However, no new device under /dev.