| Kernel driver x1205 | |
| =================== | |
| Supported chips: | |
| * Xicor X1205 RTC | |
| Prefix: 'x1205' | |
| Addresses scanned: none | |
| Datasheet: http://www.intersil.com/cda/deviceinfo/0,1477,X1205,00.html | |
| Authors: | |
| Karen Spearel <kas11@tampabay.rr.com>, | |
| Alessandro Zummo <a.zummo@towertech.it> | |
| Description | |
| ----------- | |
| This module aims to provide complete access to the Xicor X1205 RTC. | |
| Recently Xicor has merged with Intersil, but the chip is | |
| still sold under the Xicor brand. | |
| This chip is located at address 0x6f and uses a 2-byte register addressing. | |
| Two bytes need to be written to read a single register, while most | |
| other chips just require one and take the second one as the data | |
| to be written. To prevent corrupting unknown chips, the user must | |
| explicitely set the probe parameter. | |
| example: | |
| modprobe x1205 probe=0,0x6f | |
| The module supports one more option, hctosys, which is used to set the | |
| software clock from the x1205. On systems where the x1205 is the | |
| only hardware rtc, this parameter could be used to achieve a correct | |
| date/time earlier in the system boot sequence. | |
| example: | |
| modprobe x1205 probe=0,0x6f hctosys=1 |