linux-kernel - Re: [PATCH v2 20/21] ARM: tegra: clock: Fix clock issues in suspend

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Message-ID: <AANLkTin-=rv8HoUhUYJbfrsXHHE7iysqdC+W97C-_bM=@mail.gmail.com>
Date:	Sun, 20 Feb 2011 20:28:11 -0800
From:	Olof Johansson <olof@...om.net>
To:	Colin Cross <ccross@...roid.com>
Cc:	linux-tegra@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	konkers@...roid.com, Russell King <linux@....linux.org.uk>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 20/21] ARM: tegra: clock: Fix clock issues in suspend

On Sat, Feb 19, 2011 at 2:26 PM, Colin Cross <ccross@...roid.com> wrote:
> The PLLP registers are now being restored by the low-level resume code,
> and the CPU may be running off PLLP, so don't touch them during clock
> resume.
>
> Save plld, plls, pllu, and audio clock during suspend (originally
> fixed by Mayuresh Kulkarni <mkulkarni@...dia.com>)
>
> The lock time for plld is 1000 us, so increase the delay after
> setting the PLLs.
>
> Add a BUG_ON to ensure the size of the suspend context area is
> correct.

It's a bummer that this can't be done (easily) at build time, it'd be
more useful. Oh well, still good to catch at runtime at least.


> Signed-off-by: Colin Cross <ccross@...roid.com>

Acked-by: Olof Johansson <olof@...om.net>
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