linux-kernel - Re: [RFC 00/19] Runtime PM fixes for omap-ssi

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Date:	Tue, 28 Jun 2016 02:33:04 +0200
From:	Sebastian Reichel <sre@...nel.org>
To:	linux-omap@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	Tony Lindgren <tony@...mide.com>,
	Aaro Koskinen <aaro.koskinen@....fi>,
	Pavel Machek <pavel@....cz>,
	Ivaylo Dimitrov <ivo.g.dimitrov.75@...il.com>,
	Pali Rohár <pali.rohar@...il.com>
Subject: Re: [RFC 00/19] Runtime PM fixes for omap-ssi

Hi,

On Sat, Jun 18, 2016 at 06:26:50PM +0200, Sebastian Reichel wrote:
> This series fixes runtime PM for omap-ssi, so that
> the OMAP SoC can idle correctly. After applying the
> series, the SSI module correctly goes into idle if
> phonet0 interface is not configured or if it's
> used by ofono (*). Apart from me Pavel Machek did
> some testing of my devel branch [0] and reported,
> that he was able to get the phone into full idle.
> 
> Note: I did my testing with kernel flashing over USB, so
> idle is broken. But I found the bit in cm_idlest1_core,
> that stands for SSI blocking status: 0x00800000 (documented
> as "reserved" in the public TRM).
> 
> (*) "ifconfig phonet0 up" will result in blocking ssi module
>     until modem setup has finished (data communication via
> 	phonet0 device), since it enables ssi wakelines.
> 
> [0] https://git.kernel.org/cgit/linux/kernel/git/sre/linux-hsi.git/log/?h=runtime-pm-fixes

I just added this patchset to hsi's for-next branch.

-- Sebastian

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