xref: /linux/Documentation/ABI/testing/sysfs-module (revision 6f3bceba03b4f18e0b83261e2fb761e0ad5da625)
1cf4ece53SMasayuki OhtakWhat:		/sys/module/pch_phub/drivers/.../pch_mac
2cf4ece53SMasayuki OhtakDate:		August 2010
3cf4ece53SMasayuki OhtakKernelVersion:	2.6.35
4cf4ece53SMasayuki OhtakContact:	masa-korg@dsn.okisemi.com
5cf4ece53SMasayuki OhtakDescription:	Write/read GbE MAC address.
6cf4ece53SMasayuki Ohtak
7cf4ece53SMasayuki OhtakWhat:		/sys/module/pch_phub/drivers/.../pch_firmware
8cf4ece53SMasayuki OhtakDate:		August 2010
9cf4ece53SMasayuki OhtakKernelVersion:	2.6.35
10cf4ece53SMasayuki OhtakContact:	masa-korg@dsn.okisemi.com
11cf4ece53SMasayuki OhtakDescription:	Write/read Option ROM data.
12cf4ece53SMasayuki Ohtak
13cc62a7ebSKirill Smelkov
14cc62a7ebSKirill SmelkovWhat:		/sys/module/ehci_hcd/drivers/.../uframe_periodic_max
15cc62a7ebSKirill SmelkovDate:		July 2011
16cc62a7ebSKirill SmelkovKernelVersion:	3.1
17cc62a7ebSKirill SmelkovContact:	Kirill Smelkov <kirr@mns.spb.ru>
18cc62a7ebSKirill SmelkovDescription:	Maximum time allowed for periodic transfers per microframe (μs)
19cc62a7ebSKirill Smelkov
2054a19b4dSMauro Carvalho Chehab		Note:
2154a19b4dSMauro Carvalho Chehab		  USB 2.0 sets maximum allowed time for periodic transfers per
22cc62a7ebSKirill Smelkov		  microframe to be 80%, that is 100 microseconds out of 125
23cc62a7ebSKirill Smelkov		  microseconds (full microframe).
24cc62a7ebSKirill Smelkov
25cc62a7ebSKirill Smelkov		  However there are cases, when 80% max isochronous bandwidth is
26cc62a7ebSKirill Smelkov		  too limiting. For example two video streams could require 110
27cc62a7ebSKirill Smelkov		  microseconds of isochronous bandwidth per microframe to work
2854a19b4dSMauro Carvalho Chehab		  together.
29cc62a7ebSKirill Smelkov
30cc62a7ebSKirill Smelkov		Through this setting it is possible to raise the limit so that
31cc62a7ebSKirill Smelkov		the host controller would allow allocating more than 100
32cc62a7ebSKirill Smelkov		microseconds of periodic bandwidth per microframe.
33cc62a7ebSKirill Smelkov
34cc62a7ebSKirill Smelkov		Beware, non-standard modes are usually not thoroughly tested by
35cc62a7ebSKirill Smelkov		hardware designers, and the hardware can malfunction when this
36cc62a7ebSKirill Smelkov		setting differ from default 100.
37cca3e707SKay Sievers
38cca3e707SKay SieversWhat:		/sys/module/*/{coresize,initsize}
39cca3e707SKay SieversDate:		Jan 2012
40*6f3bcebaSMauro Carvalho ChehabKernelVersion:	3.3
41cca3e707SKay SieversContact:	Kay Sievers <kay.sievers@vrfy.org>
42cca3e707SKay SieversDescription:	Module size in bytes.
43cca3e707SKay Sievers
44cca3e707SKay SieversWhat:		/sys/module/*/taint
45cca3e707SKay SieversDate:		Jan 2012
46*6f3bcebaSMauro Carvalho ChehabKernelVersion:	3.3
47cca3e707SKay SieversContact:	Kay Sievers <kay.sievers@vrfy.org>
48cca3e707SKay SieversDescription:	Module taint flags:
4954a19b4dSMauro Carvalho Chehab			==  =====================
5054a19b4dSMauro Carvalho Chehab			P   proprietary module
5154a19b4dSMauro Carvalho Chehab			O   out-of-tree module
5254a19b4dSMauro Carvalho Chehab			F   force-loaded module
5354a19b4dSMauro Carvalho Chehab			C   staging driver module
5454a19b4dSMauro Carvalho Chehab			E   unsigned module
5554a19b4dSMauro Carvalho Chehab			==  =====================
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