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Diffstat (limited to 'Documentation/i2c')
| -rw-r--r-- | Documentation/i2c/chips/x1205 | 38 |
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diff --git a/Documentation/i2c/chips/x1205 b/Documentation/i2c/chips/x1205 deleted file mode 100644 index 09407c991fe5..000000000000 --- a/Documentation/i2c/chips/x1205 +++ /dev/null | |||
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| 1 | Kernel driver x1205 | ||
| 2 | =================== | ||
| 3 | |||
| 4 | Supported chips: | ||
| 5 | * Xicor X1205 RTC | ||
| 6 | Prefix: 'x1205' | ||
| 7 | Addresses scanned: none | ||
| 8 | Datasheet: http://www.intersil.com/cda/deviceinfo/0,1477,X1205,00.html | ||
| 9 | |||
| 10 | Authors: | ||
| 11 | Karen Spearel <kas11@tampabay.rr.com>, | ||
| 12 | Alessandro Zummo <a.zummo@towertech.it> | ||
| 13 | |||
| 14 | Description | ||
| 15 | ----------- | ||
| 16 | |||
| 17 | This module aims to provide complete access to the Xicor X1205 RTC. | ||
| 18 | Recently Xicor has merged with Intersil, but the chip is | ||
| 19 | still sold under the Xicor brand. | ||
| 20 | |||
| 21 | This chip is located at address 0x6f and uses a 2-byte register addressing. | ||
| 22 | Two bytes need to be written to read a single register, while most | ||
| 23 | other chips just require one and take the second one as the data | ||
| 24 | to be written. To prevent corrupting unknown chips, the user must | ||
| 25 | explicitely set the probe parameter. | ||
| 26 | |||
| 27 | example: | ||
| 28 | |||
| 29 | modprobe x1205 probe=0,0x6f | ||
| 30 | |||
| 31 | The module supports one more option, hctosys, which is used to set the | ||
| 32 | software clock from the x1205. On systems where the x1205 is the | ||
| 33 | only hardware rtc, this parameter could be used to achieve a correct | ||
| 34 | date/time earlier in the system boot sequence. | ||
| 35 | |||
| 36 | example: | ||
| 37 | |||
| 38 | modprobe x1205 probe=0,0x6f hctosys=1 | ||