1 ========================= 1 =========================
2 Kernel driver i2c-ali1535 2 Kernel driver i2c-ali1535
3 ========================= 3 =========================
4 4
5 Supported adapters: 5 Supported adapters:
6 * Acer Labs, Inc. ALI 1535 (south bridge) 6 * Acer Labs, Inc. ALI 1535 (south bridge)
7 7
8 Datasheet: Now under NDA 8 Datasheet: Now under NDA
9 http://www.ali.com.tw/ 9 http://www.ali.com.tw/
10 10
11 Authors: 11 Authors:
12 - Frodo Looijaard <frodol@dds.nl>, 12 - Frodo Looijaard <frodol@dds.nl>,
13 - Philip Edelbrock <phil@netroedge.com> 13 - Philip Edelbrock <phil@netroedge.com>,
14 - Mark D. Studebaker <mdsxyz123@yahoo.c 14 - Mark D. Studebaker <mdsxyz123@yahoo.com>,
15 - Dan Eaton <dan.eaton@rocketlogix.com> 15 - Dan Eaton <dan.eaton@rocketlogix.com>,
16 - Stephen Rousset<stephen.rousset@rocke 16 - Stephen Rousset<stephen.rousset@rocketlogix.com>
17 17
18 Description 18 Description
19 ----------- 19 -----------
20 20
21 This is the driver for the SMB Host controller 21 This is the driver for the SMB Host controller on Acer Labs Inc. (ALI)
22 M1535 South Bridge. 22 M1535 South Bridge.
23 23
24 The M1535 is a South bridge for portable syste 24 The M1535 is a South bridge for portable systems. It is very similar to the
25 M15x3 South bridges also produced by Acer Labs 25 M15x3 South bridges also produced by Acer Labs Inc. Some of the registers
26 within the part have moved and some have been 26 within the part have moved and some have been redefined slightly.
27 Additionally, the sequencing of the SMBus tran 27 Additionally, the sequencing of the SMBus transactions has been modified to
28 be more consistent with the sequencing recomme 28 be more consistent with the sequencing recommended by the manufacturer and
29 observed through testing. These changes are r 29 observed through testing. These changes are reflected in this driver and
30 can be identified by comparing this driver to 30 can be identified by comparing this driver to the i2c-ali15x3 driver. For
31 an overview of these chips see http://www.acer 31 an overview of these chips see http://www.acerlabs.com
32 32
33 The SMB controller is part of the M7101 device 33 The SMB controller is part of the M7101 device, which is an ACPI-compliant
34 Power Management Unit (PMU). 34 Power Management Unit (PMU).
35 35
36 The whole M7101 device has to be enabled for t 36 The whole M7101 device has to be enabled for the SMB to work. You can't
37 just enable the SMB alone. The SMB and the ACP 37 just enable the SMB alone. The SMB and the ACPI have separate I/O spaces.
38 We make sure that the SMB is enabled. We leave 38 We make sure that the SMB is enabled. We leave the ACPI alone.
39 39
40 40
41 Features 41 Features
42 -------- 42 --------
43 43
44 This driver controls the SMB Host only. This d 44 This driver controls the SMB Host only. This driver does not use
45 interrupts. 45 interrupts.
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