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    SubjectRe: [PATCH] [RTC] Add Freescale MC13783 RTC driver
    Hi Uwe,

    Uwe Kleine-König wrote:
    > Hello,
    > On Sat, Oct 24, 2009 at 10:35:42AM +0200, Uwe Kleine-König wrote:
    >> This driver provides support for the RTC part integrated into the
    >> Freescale MC13783 PMIC and bases on patch created earlier by Sascha
    >> Hauer.
    >> Signed-off-by: Sascha Hauer <>
    >> Signed-off-by: Uwe Kleine-König <u.kleine-kö>
    >> Cc: Valentin Longchamp <>
    >> Cc: Paul Gortmaker <>
    >> Cc: Alessandro Zummo <>
    >> Cc:
    >> ---
    >> Hello,
    >> this patch depends on
    >> mfd/mc13783: near complete rewrite
    >> sent earlier on lkml[1]. Compared to the earlier version of rtc support
    >> on mc13783 as sent by Sascha, this driver got reset detection and
    >> therefore depends on the patch above.
    >> A tree runnable on Phytec's PCM038 is available in my git tree
    >> git:// mc13783
    >> . (Maybe I will rewrite these commits, so please expect it might change
    >> in a non-fast-forward manner.)
    > Valentin, could you already test this? Any comments by the others?

    I have tested your patches (taken your mc13783 branch today, and merged
    it into my patches rebased on 2.6.32-rc6).

    Your mfd/mc13783 rewrite seems to work for me (but since there is no
    real usage for now, I don't use ADC yet and regulator don't do a lot).
    But it runs fine on my hardware.

    However, I get the hctosys: unable to read the hardware clock error
    message at boot (from drivers/rtc/hctosys.c:62). Is it normal ?

    Furthermore, the date and time are saved during system off, but the time
    is not updated: if I shut down the system during 10 minutes, my time
    will get a 10 minute delay. Is this a normal behavior with you current
    implementation or is there something we have wrong in our design/code
    (we have battery for the mc13783) ? I will have a further look at this
    later, didn't have time now.


    Valentin Longchamp, PhD Student, EPFL-STI-LSRO1, Phone: +41216937827
    MEA3485, Station 9, CH-1015 Lausanne
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