linux-kernel - RE: [PATCH v5 19/21] clk: tegra: Add Super Gen5 Logic

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Date:	Mon, 25 May 2015 08:19:52 +0000
From:	Bill Huang <bilhuang@...dia.com>
To:	Benson Leung <bleung@...omium.org>,
	Rhyland Klein <rklein@...dia.com>
CC:	Peter De Schrijver <pdeschrijver@...dia.com>,
	Mike Turquette <mturquette@...aro.org>,
	Stephen Warren <swarren@...dotorg.org>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Thierry Reding <thierry.reding@...il.com>,
	"Alexandre Courbot" <gnurou@...il.com>,
	Paul Walmsley <pwalmsley@...dia.com>,
	Jim Lin <jilin@...dia.com>,
	"linux-clk@...r.kernel.org" <linux-clk@...r.kernel.org>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v5 19/21] clk: tegra: Add Super Gen5 Logic


> -----Original Message-----
> From: bleung@...gle.com [mailto:bleung@...gle.com] On Behalf Of Benson
> Leung
> Sent: Friday, May 15, 2015 3:37 AM
> To: Rhyland Klein
> Cc: Peter De Schrijver; Mike Turquette; Stephen Warren; Stephen Boyd; Thierry
> Reding; Alexandre Courbot; Bill Huang; Paul Walmsley; Jim Lin; linux-
> clk@...r.kernel.org; linux-tegra@...r.kernel.org; linux-kernel@...r.kernel.org
> Subject: Re: [PATCH v5 19/21] clk: tegra: Add Super Gen5 Logic
> 
> On Tue, May 12, 2015 at 10:24 AM, Rhyland Klein <rklein@...dia.com> wrote:
> > From: Bill Huang <bilhuang@...dia.com>
> >
> > Super clock divider control and clock source mux of Tegra210 has
> > changed a little against prior SoCs, this patch adds Gen5 logic to
> > address those differences.
> >
> > Signed-off-by: Bill Huang <bilhuang@...dia.com>
> > ---
> > v2:
> >   - Fixed sclk divider address (0x370 -> 0x2c)
> >
> >  drivers/clk/tegra/Makefile               |    1 +
> >  drivers/clk/tegra/clk-tegra-super-gen5.c |  150
> ++++++++++++++++++++++++++++++
> >  drivers/clk/tegra/clk.h                  |    3 +
> >  3 files changed, 154 insertions(+)
> >  create mode 100644 drivers/clk/tegra/clk-tegra-super-gen5.c
> 
> I've diffed clk-tegra-super-gen5.c and the existing clk-tegra-super-gen4.c, and
> there's a lot of code duplication here.
> They're the same pair of functions, with several small changes. Since the idea
> behind pulling out the super clock initialization into a common file was to reuse
> the same init, could we extend the super-gen4 file (rename if you have to) to
> support both gens instead?
> 
Thanks, we'll integrate gen5 into gen4 file in v6.
> --
> Benson Leung
> Software Engineer, Chrom* OS
> bleung@...omium.org