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Linux/Documentation/i2c/busses/i2c-sis96x.rst

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  1 ========================
  2 Kernel driver i2c-sis96x
  3 ========================
  4 
  5 Replaces 2.4.x i2c-sis645
  6 
  7 Supported adapters:
  8 
  9   * Silicon Integrated Systems Corp (SiS)
 10 
 11     Any combination of these host bridges:
 12         645, 645DX (aka 646), 648, 650, 651, 655, 735, 745, 746
 13 
 14     and these south bridges:
 15         961, 962, 963(L)
 16 
 17 Author: Mark M. Hoffman <mhoffman@lightlink.com>
 18 
 19 Description
 20 -----------
 21 
 22 This SMBus only driver is known to work on motherboards with the above
 23 named chipset combinations. The driver was developed without benefit of a
 24 proper datasheet from SiS. The SMBus registers are assumed compatible with
 25 those of the SiS630, although they are located in a completely different
 26 place. Thanks to Alexander Malysh <amalysh@web.de> for providing the
 27 SiS630 datasheet (and  driver).
 28 
 29 The command ``lspci`` as root should produce something like these lines::
 30 
 31   00:00.0 Host bridge: Silicon Integrated Systems [SiS]: Unknown device 0645
 32   00:02.0 ISA bridge: Silicon Integrated Systems [SiS] 85C503/5513
 33   00:02.1 SMBus: Silicon Integrated Systems [SiS]: Unknown device 0016
 34 
 35 or perhaps this::
 36 
 37   00:00.0 Host bridge: Silicon Integrated Systems [SiS]: Unknown device 0645
 38   00:02.0 ISA bridge: Silicon Integrated Systems [SiS]: Unknown device 0961
 39   00:02.1 SMBus: Silicon Integrated Systems [SiS]: Unknown device 0016
 40 
 41 (kernel versions later than 2.4.18 may fill in the "Unknown"s)
 42 
 43 If you can't see it please look on quirk_sis_96x_smbus
 44 (drivers/pci/quirks.c) (also if southbridge detection fails)
 45 
 46 I suspect that this driver could be made to work for the following SiS
 47 chipsets as well: 635, and 635T. If anyone owns a board with those chips
 48 AND is willing to risk crashing & burning an otherwise well-behaved kernel
 49 in the name of progress... please contact me at <mhoffman@lightlink.com> or
 50 via the linux-i2c mailing list: <linux-i2c@vger.kernel.org>.  Please send bug
 51 reports and/or success stories as well.
 52 
 53 
 54 TO DOs
 55 ------
 56 
 57 * The driver does not support SMBus block reads/writes; I may add them if a
 58   scenario is found where they're needed.
 59 
 60 
 61 Thank You
 62 ---------
 63 
 64 Mark D. Studebaker <mdsxyz123@yahoo.com>
 65  - design hints and bug fixes
 66 
 67 Alexander Maylsh <amalysh@web.de>
 68  - ditto, plus an important datasheet... almost the one I really wanted
 69 
 70 Hans-Günter Lütke Uphues <hg_lu@t-online.de>
 71  - patch for SiS735
 72 
 73 Robert Zwerus <arzie@dds.nl>
 74  - testing for SiS645DX
 75 
 76 Kianusch Sayah Karadji <kianusch@sk-tech.net>
 77  - patch for SiS645DX/962
 78 
 79 Ken Healy
 80  - patch for SiS655
 81 
 82 To anyone else who has written w/ feedback, thanks!

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