Find the answer to your Linux question:
Results 1 to 2 of 2
Enjoy an ad free experience by logging in. Not a member yet? Register.
  1. #1
    Just Joined! sjremya's Avatar
    Join Date
    May 2010

    need to upgrade the kernel with RTC ISL1221

    Hi all

    i m a beginner in device drivers.

    I m using linux kernel 2-6-20 , which is for our application with AT91SAM9260 processor.

    I would like to use an RTC to update my system time, the chip is RTC - ISL1221 from intersil.

    This kernel is supporting ISL 1208 but not ISL 1221 . [ I could see only few option in kernel configuration time, but ISL 1221 is not present in the device drivers-> real time clock -> RTC drivers list. ]

    HOW CAN I CONFIGURE THIS KERNEL FOR THIS NEW RTC , if i write a driver for this?

    Please help me out


    Last edited by devils casper; 08-17-2010 at 08:55 AM. Reason: removed formatting tags.

  2. #2
    Just Joined! sjremya's Avatar
    Join Date
    May 2010
    hi all

    I could find a solution for this ....

    I have added the new RTC configuration in /linux/drivers/rtc/Kconfig as shown below, and now i am able to configure the kernel with the new chip

    config RTC_DRV_ISL1221
    tristate "Intersil 1221"
    depends on RTC_CLASS && I2C
    If you say yes here you get support for the
    Intersil 1221 RTC chip.
    This driver can also be built as a module. If so, the module
    will be called rtc-isl1221.

    Please correct me if I m doing any thing wrong ....

    thanks in advance

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts