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Kernel driver `i2c-sis645.o' |
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Status: Beta |
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Supported adapters: |
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* Silicon Integrated Systems Corp (SiS) |
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Any combination of these host bridges: |
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645, 645DX (aka 646), 648, 650, 651, 655, 735, 745, 746 |
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and these south bridges: |
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961, 962, 963(L) |
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Author: Mark M. Hoffman <mhoffman@lightlink.com> |
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License: GPL |
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Module Parameters |
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----------------- |
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(none) |
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Description |
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----------- |
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This SMBus only driver is known to work on motherboards with the above named |
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chipset combinations. The driver was developed without benefit of a proper |
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datasheet from SiS. The SMBus registers are assumed compatible with those of |
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the SiS630, although they are located in a completely different place. Thanks |
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to Alexander Malysh <amalysh@web.de> for providing the SiS630 datasheet (and |
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driver). |
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The command "lspci" as root should produce something like these lines: |
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00:00.0 Host bridge: Silicon Integrated Systems [SiS]: Unknown device 0645 |
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00:02.0 ISA bridge: Silicon Integrated Systems [SiS] 85C503/5513 |
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00:02.1 SMBus: Silicon Integrated Systems [SiS]: Unknown device 0016 |
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or perhaps this... |
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00:00.0 Host bridge: Silicon Integrated Systems [SiS]: Unknown device 0645 (rev 02) |
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00:02.0 ISA bridge: Silicon Integrated Systems [SiS]: Unknown device 0961 |
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00:02.1 SMBus: Silicon Integrated Systems [SiS]: Unknown device 0016 |
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(kernel versions later than 2.4.18 may fill in the "Unknown"s) |
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If the SMBus line is missing, then the BIOS on the board has disabled the |
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device. This driver is capable of enabling it, as long as the kernel has |
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CONFIG_HOTPLUG enabled. In that case, the SMBus device will appear in "lspci" |
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after the driver is loaded. Note that you need to rebuild lm_sensors AFTER |
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running "make config" or equivalent on your kernel, otherwise the i2c-sis645 |
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driver will not build in this support. |
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I suspect that this driver could be made to work for the following SiS chipsets |
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as well: 635, and 635T. |
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If anyone owns a board with those chips AND is willing to risk crashing & |
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burning an otherwise well-behaved kernel in the name of progress... please |
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contact me at <mhoffman@lightlink.com> or via the project's mailing list: |
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see http://www.lm-sensors.org/wiki/AuthorsAndContributors. Please send bug reports |
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and/or success stories as well. |
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TO DOs |
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----------- |
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* The driver does not support SMBus block reads/writes; I may add them if a |
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scenario is found where they're needed. |
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Thank Yous |
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----------- |
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Mark D. Studebaker <mdsxyz123@yahoo.com> |
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- design hints and bug fixes |
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Alexander Maylsh <amalysh@web.de> |
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- ditto, plus an important datasheet... almost the one I really wanted |
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Hans-Günter Lütke Uphues <hg_lu@t-online.de> |
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- patch for SiS735 |
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Robert Zwerus <arzie@dds.nl> |
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- testing for SiS645DX |
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Kianusch Sayah Karadji <kianusch@sk-tech.net> |
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- patch for SiS645DX/962 |
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Ken Healy |
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- patch for Sis655 |
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To anyone else who has written w/ feedback, thanks! |
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