linux-kernel - Re: [PATCH] clk: qcom: Make oxili GDSC parent of oxili

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Message-ID: <20151005181351.GD12338@codeaurora.org>
Date:	Mon, 5 Oct 2015 11:13:51 -0700
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	Rajendra Nayak <rnayak@...eaurora.org>
Cc:	Mike Turquette <mturquette@...libre.com>,
	linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
	linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org
Subject: Re: [PATCH] clk: qcom: Make oxili GDSC parent of oxili_cx GDSC

On 10/05, Rajendra Nayak wrote:
> []...
> 
> >>> It would also be nicer if this parent/child relationship can
> >>> somehow be represented in data (struct gdsc) that gets passed to
> >>> the gdsc driver which then sets it up, instead of individual
> >>> clock drivers doing it.
> >>
> >> Agreed. I'd rather that we do nothing besides register domains
> >> and then let the core code handle hooking up domains and
> >> subdomains.
> > 
> > A little closer inspection makes me want to skip this. PM domains
> > can have multiple "master" domains, and pm_genpd_init() is the
> > only API that would be able to do the linking. That API is mostly
> > about initializing things to default values, so it doesn't seem
> > like a good fit. I'll send a v2 with the remove part and the
> > exports.
> 
> What I was suggesting is that the qcom gdsc driver handle this
> instead of the qcom clock drivers.
> Something like..

Ah ok. This patch will still need the gdscs to be in a certain
order though so that we don't add a subdomain on an uninitialized
domain. So I guess some list of pointer pairs to call the
function on could be done in the qcom_cc_desc structure if we
need to do this more than a couple times.

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