Greetings all,
I'm not to familiar with Linux so this may be a dumb question.
I'm trying to use the RTS line of /dev/ttts4, however that line (pin-7) has
been re-purposed as the TX line of /dev/ttts5.
The TS-7800 manual regarding UARTs states that:
>> When some TS-UART ports are enabled, they override the
>> meanings of other pins with their own meanings. When
>> disabled, the pins revert to their original meaning.
How would I go about permanently disabling /dev/ttts5?
Many thanks,
- Malcolm
P.S. The following information may be useful.
This is running the stock Linux distribution that came with the board.
'uname -a' prints the following:
>> Linux ts7800 2.6.21-ts #1 PREEMPT Fri Oct 10 10:20:42
>> MST 2008 armv5tejl GNU/Linux
'/etc/modules' contains the two lines:
>> tsuart1
>> tsuart7800
'lsmod' shows the following two entries:
>> [Module] tsuart7800 [Size] 2716 [Used by] 0
>> [Module] tsuart1 [Size] 13964 [Used by] 1 tsuart7800
'dmesg' shows the following entries:
>> ttts0 at MMIO 0xe80000c0 (irq = 80) is a TSUART
>> tt8s0 at MMIO 0xe80000c0 (irq = 80) is a TSUART
>> ttts1 at MMIO 0xe80000c4 (irq = 81) is a TSUART
>> tt8s1 at MMIO 0xe80000c4 (irq = 81) is a TSUART
>> ttts2 at MMIO 0xe80000c8 (irq = 82) is a TSUART
>> tt8s2 at MMIO 0xe80000c8 (irq = 82) is a TSUART
>> ttts3 at MMIO 0xe80000cc (irq = 83) is a TSUART
>> tt8s3 at MMIO 0xe80000cc (irq = 83) is a TSUART
>> ttts4 at MMIO 0xe80000d0 (irq = 84) is a TSUART
>> tt8s4 at MMIO 0xe80000d0 (irq = 84) is a TSUART
>> ttts5 at MMIO 0xe80000d4 (irq = 85) is a TSUART
>> tt8s5 at MMIO 0xe80000d4 (irq = 85) is a TSUART
>> ttts6 at MMIO 0xe80000d8 (irq = 86) is a TSUART
>> tt8s6 at MMIO 0xe80000d8 (irq = 86) is a TSUART
>> ttts7 at MMIO 0xe80000dc (irq = 87) is a TSUART
>> tt8s7 at MMIO 0xe80000dc (irq = 87) is a TSUART
>> ttts8 at MMIO 0xe80000e0 (irq = 88) is a TSUART
>> tt8s8 at MMIO 0xe80000e0 (irq = 88) is a TSUART
>> ttts9 at MMIO 0xe80000e4 (irq = 89) is a TSUART
>> tt8s9 at MMIO 0xe80000e4 (irq = 89) is a TSUART
'ls -al /dev/ttts*' shows:
>> crw-rw---- 1 root dialout 234, 1 Jan 1 00:00 /dev/ttts0
>> crw-rw---- 1 root dialout 234, 2 Jan 1 00:00 /dev/ttts1
>> crw-rw---- 1 root dialout 234, 3 Jan 1 00:00 /dev/ttts2
>> crw-rw---- 1 root dialout 234, 4 Jan 1 00:00 /dev/ttts3
>> crw-rw---- 1 root dialout 234, 5 Jan 1 00:00 /dev/ttts4
>> crw-rw---- 1 root dialout 234, 6 Jan 1 00:00 /dev/ttts5
>> crw-rw---- 1 root dialout 234, 7 Jan 1 00:00 /dev/ttts6
>> crw-rw---- 1 root dialout 234, 8 Jan 1 00:00 /dev/ttts7
>> crw-rw---- 1 root dialout 234, 9 Jan 1 00:00 /dev/ttts8
>> crw-rw---- 1 root dialout 234, 10 Jan 1 00:00 /dev/ttts9
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