On Wed, 10 May 2006 17:36:32 +0100
Russell King <rmk@xxxxxxxxxxxxxxxx> wrote:
> On Sun, May 07, 2006 at 10:59:42PM +0300, Mikhail Kolesnik wrote:
> > ...
> > + { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_CB950,
> > + PCI_ANY_ID, PCI_ANY_ID, 0, 0,
> > + pbn_b0_bt_1_115200 },
>
> This should probably be pbn_b0_1_115200?
The reason was (from the discussion mentioned):
> pbn_b0_bt_1_115200 has been used instead
> of pbn_b0_1_115200, because the latter is identical to
> pbn_default, and the effect should be the same since
> OXCB950 is single-port.
Seems it is not the problem here (as card partially works). Or should I
try changing it?
> > The problem is that card only works with baud rates from 50 to 2400.
> > The card is connected to a common external modem, which is known to
> > work with any reasonable rates in other PC.
>
> Odd. Maybe the port isn't clocked at the usual frequency, and 115200
> is the wrong base.
Is that datasheet of any use here?
> Well, 1.8432MHz corresponds with a base of 115200, so that's not wrong.
> IS your modem showing the DTE speed in that connect line? If so, 2400
> baud seems to actually correspond with 230400 baud, which would be a
> rather interesting state of affairs. What does setserial -bav /dev/ttyS4
> say?
Yes, the first number is 'DTE data rate' (but modem's chip datasheet
claims it does not support DTE higher than 115200). Note, with ANY
baud from 300 to 2400 result is:
"CONNECT 230400/Vxx/LAPM/Vxxx/TX=xxxxx/RX=xxxxx"
But bauds lower than 1200 do really limit speed.
# setserial -bav /dev/ttyS4
/dev/ttyS4, Line 4, UART: 16950/954, Port: 0x3010, IRQ: 11
Baud_base: 115200, close_delay: 50, divisor: 0
closing_wait: 3000
Flags: spd_normal skip_test
Changing divisor to 8.625 (it is reported to be '8') gave nothing.
BTW, I have many devices using IRQ 11, hope that is not causing weird
things? This Laptop's bios is not a good helper here...
# lspci -v | grep "IRQ\ 11" | wc -l
7
Anything else I can do here?
--
Mikhail Kolesnik
ICQ: 260259143
IRC: mike_k at freenode/#crux, rusnet/#yalta
Jabber: mike_k@xxxxxxxxxxxxxxxx
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