linux-kernel - Re: [PATCH v4 3/7] clk: sunxi: add generic multi-parent bus clock gates driver

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Message-ID: <20160823200019.GQ2598@lukather>
Date:   Tue, 23 Aug 2016 22:00:19 +0200
From:   Maxime Ripard <maxime.ripard@...e-electrons.com>
To:     Andre Przywara <andre.przywara@....com>
Cc:     Chen-Yu Tsai <wens@...e.org>, linux-sunxi@...glegroups.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Emilio López <emilio@...pez.com.ar>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...eaurora.org>, linux-clk@...r.kernel.org
Subject: Re: [PATCH v4 3/7] clk: sunxi: add generic multi-parent bus clock
 gates driver

On Mon, Aug 08, 2016 at 06:21:45PM +0100, Andre Przywara wrote:
> The Allwinner H3 SoC introduced bus clock gates with potentially
> different parents per clock gate register. The H3 driver chose to
> hardcode the actual parent clock relation in the code.
> Add a new driver (which has the potential to drive the H3 and also
> the simple clock gates as well) which uses the power of DT to describe
> this relationship in an elegant and flexible way.
> Using one subnode for every parent clock we get away with a single
> DT compatible match, which can be used as a fallback value in the
> actual DTs without the need to add specific compatible strings to the
> code.  This avoids adding a new driver or function for every new SoC.
> 
> Signed-off-by: Andre Przywara <andre.przywara@....com>
> Acked-by: Jean-Francois Moine <moinejf@...e.fr>
> ---
>  drivers/clk/sunxi/Makefile          |   1 +
>  drivers/clk/sunxi/clk-multi-gates.c | 105 ++++++++++++++++++++++++++++++++++++

Aside from my initial objections (that I still have),
drivers/clk/sunxi is in maintainance-only mode, we won't merge any new
drivers there.

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com

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