rtc/i2c-mpc stops working with 2.6.27 on Linkstation HG (powerpc) - Kernel

This is a discussion on rtc/i2c-mpc stops working with 2.6.27 on Linkstation HG (powerpc) - Kernel ; Hello, with 2.6.27(-gentoo) the rtc (Ricoh 5c372) is no longer found on my Linkstation HG. It seems, the i2c-mpc driver doesn't even find the I2C controller. Could this be related to commit #0d1cde235874b00905bce23f659690d060ebf475 (powerpc/i2c: Convert i2c-mpc into an of_platform driver, ...

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Thread: rtc/i2c-mpc stops working with 2.6.27 on Linkstation HG (powerpc)

  1. rtc/i2c-mpc stops working with 2.6.27 on Linkstation HG (powerpc)

    Hello,

    with 2.6.27(-gentoo) the rtc (Ricoh 5c372) is no longer found on my
    Linkstation HG. It seems, the i2c-mpc driver doesn't even find the I2C
    controller.

    Could this be related to commit
    #0d1cde235874b00905bce23f659690d060ebf475 (powerpc/i2c: Convert i2c-mpc
    into an of_platform driver,
    http://kerneltrap.org/mailarchive/gi...22594/thread)?

    What do I need to do, to make it work again?

    The configs are virtually identical. The kernels are loaded with their
    respective dtb files. The dtb and dts files are identical anyways.
    --
    Thanks,
    Micha
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  2. Re: rtc/i2c-mpc stops working with 2.6.27 on Linkstation HG (powerpc)

    On Wed, 22 Oct 2008, Michael Weiser wrote:

    > Hello,
    >
    > with 2.6.27(-gentoo) the rtc (Ricoh 5c372) is no longer found on my
    > Linkstation HG. It seems, the i2c-mpc driver doesn't even find the I2C
    > controller.
    >
    > Could this be related to commit
    > #0d1cde235874b00905bce23f659690d060ebf475 (powerpc/i2c: Convert i2c-mpc
    > into an of_platform driver,
    > http://kerneltrap.org/mailarchive/gi...22594/thread)?
    >
    > What do I need to do, to make it work again?
    >
    > The configs are virtually identical. The kernels are loaded with their
    > respective dtb files. The dtb and dts files are identical anyways.


    This is a known regression, see, e.g., here:

    http://ozlabs.org/pipermail/linuxppc...er/064318.html

    waiting for someone to find time to fix it.

    Thanks
    Guennadi
    ---
    Guennadi Liakhovetski, Ph.D.
    Freelance Open-Source Software Developer
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  3. Re: rtc/i2c-mpc stops working with 2.6.27 on Linkstation HG (powerpc)

    On Thu, Oct 23, 2008 at 08:30:23PM +0200, Guennadi Liakhovetski wrote:

    > > with 2.6.27(-gentoo) the rtc (Ricoh 5c372) is no longer found on my
    > > Linkstation HG. It seems, the i2c-mpc driver doesn't even find the I2C
    > > controller.


    > This is a known regression, see, e.g., here:


    > http://ozlabs.org/pipermail/linuxppc...er/064318.html


    > waiting for someone to find time to fix it.


    Cheers. I found the thread but not the pertinent posts - the web mail
    archive I googled into must have been lagging. Sorry for the
    duplication.
    --
    bye, Michael
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