Re: PCA9564: "bus is not idle" issue

[Wolfram Sang <w.sang-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>]

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> > > I'm using PCA9564 attached to a ks8695 SoC. During my efforts to get
> > > 2.6.33/34 running on my system I noticed sporadic problems with RTC:
> > 
> > [...]
> > 
> > > static struct i2c_pca9564_pf_platform_data  __initdata pca_data ={
> > > 	    .gpio = -1,
> > > 	    .i2c_clock_speed = 59000,
> > > 	    .timeout = 1,
> > > };
> > 
> > Commit 8e99ada8deaa9033600cd2c7d0a9366b0e99ab68 changed the timeout settings to
> > jiffies. So, one jiffy as timeout will not work. Try 'HZ' here.
> 
> So this means the bug isn't in the mainline kernel tree and I can
> ignore it?

A confirmation from Yegor would be nice, but his logs let me believe that
this is really the cause.

> As a side note, arch/blackfin/mach-bf561/boards/acvilon.c sets timeout
> to 10000, so the actual timeout depends on the value of HZ, which is
> probably not desirable. Not to mention that a timeout of over one
> minute (worst case) doesn't seem too smart ;)

There is also an i2c-gpio-user using non-HZ value. Will prepare patches.

Regards,

   Wolfram

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Pengutronix e.K.                           | Wolfram Sang                |
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