On Sat, Mar 24, 2007 at 12:52:08AM -0400, Mike Tancsa wrote: > Hi, > I have a mini-pci UART that has a problem with its speed on > FreeBSD. 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 > > > [EMAIL PROTECTED]: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 > [EMAIL PROTECTED]: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 ?
Set the COM_FREQ properly - according to your description COM_FREQ*4 should work. Unfortunately the PCI device doesn't tell the xtals used on a given hardware, so you have to manually tune this point. I even have a 4 port card at home with the first two uart having higher frequencies as the other two. -- B.Walter http://www.bwct.de http://www.fizon.de [EMAIL PROTECTED] [EMAIL PROTECTED] [EMAIL PROTECTED] _______________________________________________ Soekris-tech mailing list [email protected] http://lists.soekris.com/mailman/listinfo/soekris-tech
