linux-kernel - Re: [patch 4/4] MFD: Change mfd platform device usage to wrapper platform

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Message-Id: <1215610648.3295.99.camel@wirenth>
Date:	Wed, 09 Jul 2008 14:37:28 +0100
From:	ian <spyro@....com>
To:	pHilipp Zabel <philipp.zabel@...il.com>
Cc:	Ben Dooks <ben-linux@...ff.org>, Dmitry <dbaryshkov@...il.com>,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.arm.linux.org.uk
Subject: Re: [patch 4/4] MFD: Change mfd platform device usage to wrapper
	platform_device

On Wed, 2008-07-09 at 15:34 +0200, pHilipp Zabel wrote:
> On Wed, Jul 9, 2008 at 3:28 PM, ian <spyro@....com> wrote:
> > On Wed, 2008-07-09 at 13:07 +0100, Ben Dooks wrote:

> I agree "power" and "etc." are issues. Clocks should be handled by the
> clock API just fine.

When its merged.

> > they cant just do it themselves because the subdevices may be used on
> > more than one core that does this hanling in different ways (eg. T7L and
> > TC6393XB handle the 32KHz clock completely differently.
> 
> That shouln't matter with generic clocks. If they
> clk_get(&mfd_cell->pdev.dev, "my_clk_input"), that should be
> dispatched to the correct MFD clock regardless of the actual chip.

I agree but its not merged yet.

Until it is, we should stick with the enable / disable methods.

Also, suspend / resume for TC* need careful sequencing of the GPIOs
attached to #PCLR and #SUSPEND (get it wrong and you reset the chip
instead of sleep it)

:-)

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