linux-kernel - Re: [PATCH V3 0/2] add support for pmic

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Date:	Wed, 11 Feb 2015 16:53:15 -0800
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	Gilad Avidov <gavidov@...eaurora.org>
Cc:	sdharia@...eaurora.org, mlocke@...eaurora.org,
	linux-arm-msm@...r.kernel.org, gregkh@...uxfoundation.org,
	linux-kernel@...r.kernel.org, iivanov@...sol.com,
	galak@...eaurora.org, agross@...eaurora.org
Subject: Re: [PATCH V3 0/2] add support for pmic_arb v2 and correct framework

On 02/11, Gilad Avidov wrote:
> On Mon, 09 Feb 2015 15:08:58 -0800
> Stephen Boyd <sboyd@...eaurora.org> wrote:
> 
> > On 02/09/15 14:51, Gilad Avidov wrote:
> > > pmic_arb v2 has no support for spmi non-data commands and thus
> > > returns -EOPNOTSUPP on .cmd callback. This causes a failure in
> > > spmi_drv_probe() which sends a wakeup command to the slave before
> > > probing its driver. This patchset removes the wakeup from
> > > spmi_drv_probe() since the spmi spec stipulates that a slaves
> > > default state is active and doesn't need a wakeup.
> > 
> > The spec also seems to stipulate that SPMI masters shall support all
> > SPMI command sequences.
> 
> Regardless of the master's support, a wakeup call before prob is not
> required.

Yes that seems to match what the spec says.

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