diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /Documentation/i2c/busses/i2c-ali1535 |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'Documentation/i2c/busses/i2c-ali1535')
-rw-r--r-- | Documentation/i2c/busses/i2c-ali1535 | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/Documentation/i2c/busses/i2c-ali1535 b/Documentation/i2c/busses/i2c-ali1535 new file mode 100644 index 000000000000..0db3b4c74ad1 --- /dev/null +++ b/Documentation/i2c/busses/i2c-ali1535 | |||
@@ -0,0 +1,42 @@ | |||
1 | Kernel driver i2c-ali1535 | ||
2 | |||
3 | Supported adapters: | ||
4 | * Acer Labs, Inc. ALI 1535 (south bridge) | ||
5 | Datasheet: Now under NDA | ||
6 | http://www.ali.com.tw/eng/support/datasheet_request.php | ||
7 | |||
8 | Authors: | ||
9 | Frodo Looijaard <frodol@dds.nl>, | ||
10 | Philip Edelbrock <phil@netroedge.com>, | ||
11 | Mark D. Studebaker <mdsxyz123@yahoo.com>, | ||
12 | Dan Eaton <dan.eaton@rocketlogix.com>, | ||
13 | Stephen Rousset<stephen.rousset@rocketlogix.com> | ||
14 | |||
15 | Description | ||
16 | ----------- | ||
17 | |||
18 | This is the driver for the SMB Host controller on Acer Labs Inc. (ALI) | ||
19 | M1535 South Bridge. | ||
20 | |||
21 | The M1535 is a South bridge for portable systems. It is very similar to the | ||
22 | M15x3 South bridges also produced by Acer Labs Inc. Some of the registers | ||
23 | within the part have moved and some have been redefined slightly. | ||
24 | Additionally, the sequencing of the SMBus transactions has been modified to | ||
25 | be more consistent with the sequencing recommended by the manufacturer and | ||
26 | observed through testing. These changes are reflected in this driver and | ||
27 | can be identified by comparing this driver to the i2c-ali15x3 driver. For | ||
28 | an overview of these chips see http://www.acerlabs.com | ||
29 | |||
30 | The SMB controller is part of the M7101 device, which is an ACPI-compliant | ||
31 | Power Management Unit (PMU). | ||
32 | |||
33 | The whole M7101 device has to be enabled for the SMB to work. You can't | ||
34 | just enable the SMB alone. The SMB and the ACPI have separate I/O spaces. | ||
35 | We make sure that the SMB is enabled. We leave the ACPI alone. | ||
36 | |||
37 | |||
38 | Features | ||
39 | -------- | ||
40 | |||
41 | This driver controls the SMB Host only. This driver does not use | ||
42 | interrupts. | ||