Device node at /dev/tty* not getting created for uart serial driver

Manavendra Nath Manav mnm.kernel at gmail.com
Sat Nov 24 03:50:42 EST 2012


Hi RK

On Sat, Nov 24, 2012 at 2:03 PM, Manavendra Nath Manav <mnm.kernel at gmail.com
> wrote:

> I have written a simple UART serial driver in embedded Linux running
> busybox with mdev rules. I have provided .dev_name as "ttyC2C" in my
> driver code.
>
> static struct uart_driver serial_omap_reg = {
>    .owner      = THIS_MODULE,
>    .driver_name   = "Omap-C2C-Serial",
>    .dev_name   = "ttyC2C",
>    .nr      = OMAP_MAX_HSUART_PORTS,
>    .cons    = NULL,
> };
>
> However the node is getting created in
>
> ./sys/devices/platform/omap_c2c_uart.0/tty/ttyC2C0
> ./sys/class/tty/ttyC2C0
>
> / # ls -l ./sys/class/tty/ttyC2C0
> lrwxrwxrwx    1 root     0                0 Jan  1 00:14 ./sys/class/tty/ttyC2C0 -> ../../devices/platform/omap_c2c_uart.0/tty/ttyC2C0
>
> / # ls -l ./sys/devices/platform/omap_c2c_uart.0/tty/ttyC2C0
> -r--r--r--    1 root     0             4096 Jan  1 00:14 dev
> lrwxrwxrwx    1 root     0                0 Jan  1 00:14 device -> ../../../omap_c2c_uart.0
> drwxr-xr-x    2 root     0                0 Jan  1 00:14 power
> lrwxrwxrwx    1 root     0                0 Jan  1 00:14 subsystem -> ../../../../../class/tty
> -rw-r--r--    1 root     0             4096 Jan  1 00:14 uevent
> / #
>
> The mdev rules for tty are:
>
> tty 0:5 0666
> tty.* 0:0 0620
>
> How to get device node as /dev/ttyC2C ?
> --
> Manavendra Nath Manav
>

can you help me on following issue?

-- 
Manavendra Nath Manav
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