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Message-ID: <CAGb2v67YWKbit+F1gOuZ2KFNjcD7NzwwKKpue=f8R2Se8Fg1ag@mail.gmail.com>
Date: Mon, 7 Aug 2023 22:28:08 +0800
From: Chen-Yu Tsai <wens@...e.org>
To: Frank Oltmanns <frank@...manns.dev>
Cc: Maxime Ripard <mripard@...nel.org>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
Jernej Skrabec <jernej.skrabec@...il.com>,
Samuel Holland <samuel@...lland.org>,
Andre Przywara <andre.przywara@....com>,
Roman Beranek <me@...y.cz>, linux-clk@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 02/11] clk: sunxi-ng: nkm: consider alternative parent
rates when determining rate
On Mon, Aug 7, 2023 at 8:44 PM Frank Oltmanns <frank@...manns.dev> wrote:
>
> In case the CLK_SET_RATE_PARENT flag is set, consider using a different
> parent rate when determining a new rate.
>
> To find the best match for the requested rate, perform the following
> steps for each NKM combination:
> - calculate the optimal parent rate,
> - find the best parent rate that the parent clock actually supports
> - use that parent rate to calculate the effective rate.
>
> In case the clk does not support setting the parent rate, use the same
> algorithm as before.
>
> Acked-by: Maxime Ripard <mripard@...nel.org>
> Signed-off-by: Frank Oltmanns <frank@...manns.dev>
Reviewed-by: Chen-Yu Tsai <wens@...e.org>
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