PCMCIA Modem/Serial Cards and MPC8xx?

Wolfgang Denk wd at denx.de
Wed Aug 27 21:50:47 EST 2003

Dear Steven,

in message <3F4C9209.8050301 at imc-berlin.de> you wrote:
> Now I do get
> Serial driver version 5.05c (2001-07-08) with SHARE_IRQ enabled
> ttyS00 at 0xc3071000 (irq = 6) is a ST16654
> ttyS01 at 0xc3071080 (irq = 8) is a ST16654

ttyS00 and ttyS01 are already in use?

> And PCMCIA CS tells me
> cardmgr[80]: + Using /lib/modules/2.4.20/pcmcia/serial_cs.o
> ttyS02 at port 0x03f8 (irq = 9) is a 16550A
> So why is it ttyS02. Why is it ./serial start ttyS2?

Because ttyS00 and ttyS01 are already in use.

> It's also ttyS2 if I don't enable SCC1 as UART!

ttyS2 or ttyS02?

> I read this. But where does the MAJOR number 240 come from???

See Documentation/devices.txt: LOCAL/EXPERIMENTAL USE

Based on previous experience I saw little chance to get the  resource
conflict solved by the Powers That Be.

Best regards,

Wolfgang Denk

Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd at denx.de
We are drowning in information but starved for knowledge.
                                         -- John Naisbitt, Megatrends

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