Re: [Soekris] Net6501, 2nd serial and Linux 3.1
On Sun, 12 Feb 2012 17:22:51 -0800, Peter Neubauer wrote: > Somewhat related, is the internal port at "RS-232" voltage levels, or is > it a TTL/LVTTL level port? It is the real thing ;) I use it communicate with my UPS. -- Philippe ___ Soekris-tech mailing list Soekris-tech@lists.soekris.com http://lists.soekris.com/mailman/listinfo/soekris-tech
Re: [Soekris] Net6501, 2nd serial and Linux 3.1
> Did you have any "real" success? (I mean physically connecting the 2nd > serial?) Unfortunately, no. I don't have anything connected to the second serial port yet. Somewhat related, is the internal port at "RS-232" voltage levels, or is it a TTL/LVTTL level port? ___ Soekris-tech mailing list Soekris-tech@lists.soekris.com http://lists.soekris.com/mailman/listinfo/soekris-tech
Re: [Soekris] Net6501, 2nd serial and Linux 3.1
On 12/02/12 22:38, Peter Neubauer wrote: > On my Linux 3.2.1 system, the kernel recognizes the additional serial devices > using the "pch_uart" driver. It looks like 3.1 has the same driver. I > recommend confirming that you have the pch_uart module (if not, you may have > to build it from kernel source) and then try "modprobe pch_uart". > -Peter > Thanks for your answer. In the meantime we have 3.2.0 arrived in Debian wheezy, so I tried again, and got exactly the same problem. I realized as well that they are handled by the "pch_uart" driver, I can modprobe, the driver "see" the devices and creates the associated /dev/ttyPCHn, but it just does not work :( Did you have any "real" success? (I mean physically connecting the 2nd serial?) I then traced the changes in the sources and decided to comment out the pci ids definitions in 8250_pci.c so that they aren't handled by "pch_uart" as they were not in the past... ... and now they are recognized again as ttySn, and it works perfectly :) Still need to figure out how to get the same result without recompiling a kernel, as I would prefer to stay on Debian stock kernel... -- Philippe ___ Soekris-tech mailing list Soekris-tech@lists.soekris.com http://lists.soekris.com/mailman/listinfo/soekris-tech
Re: [Soekris] Net6501, 2nd serial and Linux 3.1
On my Linux 3.2.1 system, the kernel recognizes the additional serial devices using the "pch_uart" driver. It looks like 3.1 has the same driver. I recommend confirming that you have the pch_uart module (if not, you may have to build it from kernel source) and then try "modprobe pch_uart". -Peter On Feb 11, 2012, at 12:26 PM, Philippe Vanhaesendonck wrote: > Hello everybody! > > Does anybody have any luck with the 2nd serial on the net6501 under > Linux 3.1? > > With Linux 2.6.X the dmesg show (copied from Wim): > >> [1.793175] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled >> [1.793401] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a TI16750 >> [1.794537] :02:0a.1: ttyS1 at I/O 0x1020 (irq = 9) is a 16550A >> [1.795004] :02:0a.2: ttyS2 at I/O 0x1028 (irq = 9) is a 16550A >> [1.795203] serial :02:0a.3: enabling device ( -> 0003) >> [1.795231] serial :02:0a.3: can't find IRQ for PCI INT B; > please try using pci=biosirq > > > But under 3.1 it looks like ttyS1 is not recognized, I have: > >> [2.100734] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled >> [2.100734] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a TI16750 >> [2.148602] pci :01:00.0: using bridge :00:17.0 INT D to > get IRQ 19 >> [2.148623] serial :02:0a.1: PCI->APIC IRQ transform: INT D -> > IRQ 19 >> [2.148801] pci :01:00.0: using bridge :00:17.0 INT D to > get IRQ 19 >> [2.148819] serial :02:0a.2: PCI->APIC IRQ transform: INT D -> > IRQ 19 >> [2.148986] pci :01:00.0: using bridge :00:17.0 INT D to > get IRQ 19 >> [2.149003] serial :02:0a.3: PCI->APIC IRQ transform: INT D -> > IRQ 19 >> [2.149167] pci :01:00.0: using bridge :00:17.0 INT D to > get IRQ 19 >> [2.149184] serial :02:0a.4: PCI->APIC IRQ transform: INT D -> > IRQ 19 > > Any idea? > > -- > Philippe > > -- > Philippe > ___ > Soekris-tech mailing list > Soekris-tech@lists.soekris.com > http://lists.soekris.com/mailman/listinfo/soekris-tech > ___ Soekris-tech mailing list Soekris-tech@lists.soekris.com http://lists.soekris.com/mailman/listinfo/soekris-tech
[Soekris] Net6501, 2nd serial and Linux 3.1
Hello everybody! Does anybody have any luck with the 2nd serial on the net6501 under Linux 3.1? With Linux 2.6.X the dmesg show (copied from Wim): > [1.793175] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled > [1.793401] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a TI16750 > [1.794537] :02:0a.1: ttyS1 at I/O 0x1020 (irq = 9) is a 16550A > [1.795004] :02:0a.2: ttyS2 at I/O 0x1028 (irq = 9) is a 16550A > [1.795203] serial :02:0a.3: enabling device ( -> 0003) > [1.795231] serial :02:0a.3: can't find IRQ for PCI INT B; please try using pci=biosirq But under 3.1 it looks like ttyS1 is not recognized, I have: > [2.100734] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled > [2.100734] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a TI16750 > [2.148602] pci :01:00.0: using bridge :00:17.0 INT D to get IRQ 19 > [2.148623] serial :02:0a.1: PCI->APIC IRQ transform: INT D -> IRQ 19 > [2.148801] pci :01:00.0: using bridge :00:17.0 INT D to get IRQ 19 > [2.148819] serial :02:0a.2: PCI->APIC IRQ transform: INT D -> IRQ 19 > [2.148986] pci :01:00.0: using bridge :00:17.0 INT D to get IRQ 19 > [2.149003] serial :02:0a.3: PCI->APIC IRQ transform: INT D -> IRQ 19 > [2.149167] pci :01:00.0: using bridge :00:17.0 INT D to get IRQ 19 > [2.149184] serial :02:0a.4: PCI->APIC IRQ transform: INT D -> IRQ 19 Any idea? -- Philippe -- Philippe ___ Soekris-tech mailing list Soekris-tech@lists.soekris.com http://lists.soekris.com/mailman/listinfo/soekris-tech
