Attachment 'thinkpad-a22-find-sysfs.txt'
Download 1 #Thinkpad A22 example :
2
3 $ find /sys/ -name 'tty:ttyS*'
4 /sys/devices/pnp0/00:0b/tty:ttyS0
5 /sys/devices/pci0000:00/0000:00:02.0/0.0/tty:ttyS1
6 /sys/devices/platform/serial8250/tty:ttyS3
7 /sys/devices/platform/serial8250/tty:ttyS2
8
9 $ lspci
10 [..]
11 00:02.0 CardBus bridge: Texas Instruments PCI1450 (rev 03)
12 [..]
13
14 #############################################################
15 some explanations on this example :
16
17 serial8250 :
18 ttyS* under "serial8250" probably doen't exist (they are present by
19 default because it's hard to detect if they are present or not)
20
21 pnp0/00:0b/tty:ttyS0 :
22 old "pnp" infrastructure... it's likely to be a plain serial interface.
23
24 pci0000:00/0000:00:02.0/0.0/tty:ttyS1 :
25 is something connected to "CardBus bridge" (00:02.0), so ttyS0 is a
26 PC card device.
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