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use all the three ttyS0, ttyS1, ttyS2 in AM1808

vipul mahajan
Intellectual 900 points
Other Parts Discussed in Thread: AM1808, DA8XX

Hello,

I want to use all three consoles in Linux using AM1808. I want to use ttyS0 as normal console and ttyS2 & ttyS1 in internal loop back mode. Is it possible? If yes, can I get a reference code for ttyS in linux. I am using AM1808 logic PD board.

  • 0
    TI__Expert 5450 points

    Vipul,

    On the 2.6.32 kernel there were lines like the following in the arch/arm/mach-davinci/board-da850-evm.c file that were disabling the UARTs.

           __raw_writel(0, IO_ADDRESS(DA8XX_UART1_BASE) + 0x30);

           __raw_writel(0, IO_ADDRESS(DA8XX_UART0_BASE) + 0x30);

    In the 2.6.37 kernel I see a similar line for UART0 in the same file but not for UART1 (although the comment says for both).  So I would image you should comment this line out since that is what I did for the 2.6.32 kernel and that enabled UART0 and UART1.

    I think you can also change the value in the da850_evm_console_init function to use ttyS0 instead of ttyS2.

    Chase