From 849369d6c66d3054688672f97d31fceb8e8230fb Mon Sep 17 00:00:00 2001 From: root Date: Fri, 25 Dec 2015 04:40:36 +0000 Subject: initial_commit --- Documentation/i2c/busses/i2c-sis96x | 73 +++++++++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 Documentation/i2c/busses/i2c-sis96x (limited to 'Documentation/i2c/busses/i2c-sis96x') diff --git a/Documentation/i2c/busses/i2c-sis96x b/Documentation/i2c/busses/i2c-sis96x new file mode 100644 index 00000000..0b979f32 --- /dev/null +++ b/Documentation/i2c/busses/i2c-sis96x @@ -0,0 +1,73 @@ +Kernel driver i2c-sis96x + +Replaces 2.4.x i2c-sis645 + +Supported adapters: + * Silicon Integrated Systems Corp (SiS) + Any combination of these host bridges: + 645, 645DX (aka 646), 648, 650, 651, 655, 735, 745, 746 + and these south bridges: + 961, 962, 963(L) + +Author: Mark M. Hoffman + +Description +----------- + +This SMBus only driver is known to work on motherboards with the above +named chipset combinations. The driver was developed without benefit of a +proper datasheet from SiS. The SMBus registers are assumed compatible with +those of the SiS630, although they are located in a completely different +place. Thanks to Alexander Malysh for providing the +SiS630 datasheet (and driver). + +The command "lspci" as root should produce something like these lines: + +00:00.0 Host bridge: Silicon Integrated Systems [SiS]: Unknown device 0645 +00:02.0 ISA bridge: Silicon Integrated Systems [SiS] 85C503/5513 +00:02.1 SMBus: Silicon Integrated Systems [SiS]: Unknown device 0016 + +or perhaps this... + +00:00.0 Host bridge: Silicon Integrated Systems [SiS]: Unknown device 0645 +00:02.0 ISA bridge: Silicon Integrated Systems [SiS]: Unknown device 0961 +00:02.1 SMBus: Silicon Integrated Systems [SiS]: Unknown device 0016 + +(kernel versions later than 2.4.18 may fill in the "Unknown"s) + +If you can't see it please look on quirk_sis_96x_smbus +(drivers/pci/quirks.c) (also if southbridge detection fails) + +I suspect that this driver could be made to work for the following SiS +chipsets as well: 635, and 635T. If anyone owns a board with those chips +AND is willing to risk crashing & burning an otherwise well-behaved kernel +in the name of progress... please contact me at or +via the linux-i2c mailing list: . Please send bug +reports and/or success stories as well. + + +TO DOs +------ + +* The driver does not support SMBus block reads/writes; I may add them if a +scenario is found where they're needed. + + +Thank You +--------- + +Mark D. Studebaker + - design hints and bug fixes +Alexander Maylsh + - ditto, plus an important datasheet... almost the one I really wanted +Hans-Günter Lütke Uphues + - patch for SiS735 +Robert Zwerus + - testing for SiS645DX +Kianusch Sayah Karadji + - patch for SiS645DX/962 +Ken Healy + - patch for SiS655 + +To anyone else who has written w/ feedback, thanks! + -- cgit v1.2.3