linux-kernel - Re: [PATCH] spi: pl022: Add clk_{un}prepare() support in runtime PM

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Message-ID: <CACRpkdbHegZAw+9XXzOb5UPPqJvzoNfPJ5aPDhuwWWhWunuv8w@mail.gmail.com>
Date:	Mon, 17 Sep 2012 15:39:56 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Vipul Kumar Samar <vipulkumar.samar@...com>
Cc:	grant.likely@...retlab.ca, spi-devel-general@...ts.sourceforge.net,
	linux-arm-kernel@...ts.infradead.org, spear-devel@...t.st.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] spi: pl022: Add clk_{un}prepare() support in runtime PM

On Mon, Sep 17, 2012 at 12:37 PM, Vipul Kumar Samar
<vipulkumar.samar@...com> wrote:

> clk_{un}prepare is mandatory for platforms using common clock framework. Add
> clk_{un}prepare() support for spi-pl022 runtime PM.
>
> Signed-off-by: Vipul Kumar Samar <vipulkumar.samar@...com>

This driver does clk_prepare/unprepare at probe
and removed, so I guess what you're trying to say is that
on your platform the clk_unprepare() process context call
is needed to save power?

Please elaborate...

Yours,
Linus Walleij
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