Date: Sat, 24 Mar 2007 00:49:07 -0400 From: Mike Tancsa <mike@sentex.net> To: freebsd-questions@freebsd.org Subject: fixing a PUC / uart speed issue Message-ID: <200703240449.l2O4n159087350@lava.sentex.ca>
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Hi,
I have a mini-pci UART that has a problem with its speed. When I
connect to it at 300bps the other side sees this as 1200. e.g.
Other PC PUC device
4800 1200
9600 2400
19200 4800
Its a mini-pci card on a soekris 4511 and dmesg on a RELENG_6 box shows
puc0: <Oxford Semiconductor OX16PCI954 UARTs> port
0xe000-0xe01f,0xe020-0xe03f mem
0xa0000000-0xa0000fff,0xa0001000-0xa0001fff irq 10 at device 16.0 on pci0
uart4: <16950 or compatible> on puc0
uart5: <16950 or compatible> on puc0
uart6: <16950 or compatible> on puc0
uart7: <16950 or compatible> on puc0
puc0@pci0:16:0: class=0x070006 card=0x00000000 chip=0x95011415
rev=0x00 hdr=0x00
vendor = 'Oxford Semiconductor Ltd'
device = 'OX16PCI954 Quad UART'
class = simple comms
subclass = UART
cap 01[40] = powerspec 1 supports D0 D2 D3 current D0
none0@pci0:16:1: class=0x068000 card=0x00000000
chip=0x95101415 rev=0x00 hdr=0x00
vendor = 'Oxford Semiconductor Ltd'
device = 'OX16PCI954 PCI Interface (disabled)'
class = bridge
cap 01[40] = powerspec 1 supports D0 D2 D3 current D0
product specs at
http://www.commell.com.tw/Product/Peripheral/MiniPCI/MP-954.HTM
I am guessing something needs to be changed in the puc driver for it ?
/* Oxford Semiconductor OX16PCI954 PCI UARTs */
{ "Oxford Semiconductor OX16PCI954 UARTs",
{ 0x1415, 0x9501, 0, 0 },
{ 0xffff, 0xffff, 0, 0 },
{
{ PUC_PORT_TYPE_COM, 0x10, 0x00, COM_FREQ },
{ PUC_PORT_TYPE_COM, 0x10, 0x08, COM_FREQ },
{ PUC_PORT_TYPE_COM, 0x10, 0x10, COM_FREQ },
{ PUC_PORT_TYPE_COM, 0x10, 0x18, COM_FREQ },
},
},
but what ?
Other than this odd speed issue, the card seems to work fine. Any
pointers appreciated.
Thanks,
---Mike
--------------------------------------------------------------------
Mike Tancsa, tel +1 519 651 3400
Sentex Communications, mike@sentex.net
Providing Internet since 1994 www.sentex.net
Cambridge, Ontario Canada www.sentex.net/mike
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