linux-kernel - Re: [PATCH 00/25] clk: sunxi-ng: clk parent rewrite part 1

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Date:   Tue, 4 Jun 2019 00:38:22 +0800
From:   Chen-Yu Tsai <wens@...nel.org>
To:     Stephen Boyd <sboyd@...nel.org>
Cc:     Maxime Ripard <maxime.ripard@...tlin.com>,
        Chen-Yu Tsai <wens@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-clk <linux-clk@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 00/25] clk: sunxi-ng: clk parent rewrite part 1

Hi Stephen,

On Mon, May 20, 2019 at 5:03 PM Maxime Ripard <maxime.ripard@...tlin.com> wrote:
>
> On Mon, May 20, 2019 at 04:03:56PM +0800, Chen-Yu Tsai wrote:
> > From: Chen-Yu Tsai <wens@...e.org>
> >
> > Hi everyone,
> >
> > This is series is the first part of a large series (I haven't done the
> > rest) of patches to rewrite the clk parent relationship handling within
> > the sunxi-ng clk driver. This is based on Stephen's recent work allowing
> > clk drivers to specify clk parents using struct clk_hw * or parsing DT
> > phandles in the clk node.
> >
> > This series can be split into a few major parts:
> >
> > 1) The first patch is a small fix for clk debugfs representation. This
> >    was done before commit 1a079560b145 ("clk: Cache core in
> >    clk_fetch_parent_index() without names") was posted, so it might or
> >    might not be needed. Found this when checking my work using
> >    clk_possible_parents.
> >
> > 2) A bunch of CLK_HW_INIT_* helper macros are added. These cover the
> >    situations I encountered, or assume I will encounter, such as single
> >    internal (struct clk_hw *) parent, single DT (struct clk_parent_data
> >    .fw_name), multiple internal parents, and multiple mixed (internal +
> >    DT) parents. A special variant for just an internal single parent is
> >    added, CLK_HW_INIT_HWS, which lets the driver share the singular
> >    list, instead of having the compiler create a compound literal every
> >    time. It might even make sense to only keep this variant.
> >
> > 3) A bunch of CLK_FIXED_FACTOR_* helper macros are added. The rationale
> >    is the same as the single parent CLK_HW_INIT_* helpers.
> >
> > 4) Bulk conversion of CLK_FIXED_FACTOR to use local parent references,
> >    either struct clk_hw * or DT .fw_name types, whichever the hardware
> >    requires.
> >
> > 5) The beginning of SUNXI_CCU_GATE conversion to local parent
> >    references. This part is not done. They are included as justification
> >    and examples for the shared list of clk parents case.
>
> That series is pretty neat. As far as sunxi is concerned, you can add my
> Acked-by: Maxime Ripard <maxime.ripard@...tlin.com>
>
> > I realize this is going to be many patches every time I convert a clock
> > type. Going forward would the people involved prefer I send out
> > individual patches like this series, or squash them all together?
>
> For bisection, I guess it would be good to keep the approach you've
> had in this series. If this is really too much, I guess we can always
> change oru mind later on.

Any thoughts on this series and how to proceed?

Thanks
ChenYu