linux-kernel - Re: [PATCH 2/3] ARM: OMAP: hwmod: revise deassert sequence

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Message-ID: <alpine.DEB.2.00.1208020150240.4177@utopia.booyaka.com>
Date:	Thu, 2 Aug 2012 01:52:49 -0600 (MDT)
From:	Paul Walmsley <paul@...an.com>
To:	Omar Ramirez Luna <omar.luna@...aro.org>
cc:	Benoit Cousson <b-cousson@...com>,
	Tony Lindgren <tony@...mide.com>,
	Russell King <linux@....linux.org.uk>,
	Kevin Hilman <khilman@...com>,
	Ohad Ben-Cohen <ohad@...ery.com>,
	Tomi Valkeinen <tomi.valkeinen@...com>,
	linux-omap@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] ARM: OMAP: hwmod: revise deassert sequence

Hello OMar,

On Mon, 16 Jul 2012, Omar Ramirez Luna wrote:

> For a reset sequence to complete cleanly, a module needs its
> associated clocks to be enabled, otherwise the timeout check
> in prcm code can print a false failure (failed to hardreset)
> that occurs because the clocks aren't powered ON and the status
> bit checked can't transition without them.
> 
> Signed-off-by: Omar Ramirez Luna <omar.luna@...aro.org>

Is enabling the clocks sufficient?  Or do we also need to enable the 
IP block, e.g. by calling

	if (soc_ops.enable_module)
		soc_ops.enable_module(oh);

as we do on OMAP4+ in _enable() ?


- Paul
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