linux-kernel - Re: [PATCH v1 1/6] clk: divider: Implement and wire up .determine

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Message-ID: <162821221001.19113.3440053309060770787@swboyd.mtv.corp.google.com>
Date:   Thu, 05 Aug 2021 18:10:10 -0700
From:   Stephen Boyd <sboyd@...nel.org>
To:     Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        linux-clk@...r.kernel.org
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Subject: Re: [PATCH v1 1/6] clk: divider: Implement and wire up .determine_rate by default

Quoting Martin Blumenstingl (2021-07-02 15:51:40)
> .determine_rate is meant to replace .round_rate. The former comes with a
> benefit which is especially relevant on 32-bit systems: since
> .determine_rate uses an "unsigned long" (compared to a "signed long"
> which is used by .round_rate) the maximum value on 32-bit systems
> increases from 2^31 (or approx. 2.14GHz) to 2^32 (or approx. 4.29GHz).
> 
> Implement .determine_rate in addition to .round_rate so drivers that are
> using clk_divider_{ro_,}ops can benefit from this by default. Keep the
> .round_rate callback for now since some drivers rely on
> clk_divider_ops.round_rate being implemented.
> 
> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
> ---

Applied to clk-next