linux-kernel - Re: [PATCH v3 1/3] clk: divider: Add re-usable determine

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Message-ID: <162507835057.3331010.8069847562722001420@swboyd.mtv.corp.google.com>
Date:   Wed, 30 Jun 2021 11:39:10 -0700
From:   Stephen Boyd <sboyd@...nel.org>
To:     Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        linux-clk@...r.kernel.org, mturquette@...libre.com
Cc:     narmstrong@...libre.com, jbrunet@...libre.com,
        khilman@...libre.com, linux-kernel@...r.kernel.org,
        linux-amlogic@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Subject: Re: [PATCH v3 1/3] clk: divider: Add re-usable determine_rate implementations

Quoting Martin Blumenstingl (2021-06-27 15:39:57)
> These are useful when running on 32-bit systems to increase the upper
> supported frequency limit. clk_ops.round_rate returns a signed long
> which limits the maximum rate on 32-bit systems to 2^31 (or approx.
> 2.14GHz). clk_ops.determine_rate internally uses an unsigned long so
> the maximum rate on 32-bit systems is 2^32 or approx. 4.29GHz.
> 
> To avoid code-duplication switch over divider_{ro_,}round_rate_parent
> to use the new divider_{ro_,}determine_rate functions.
> 
> Reviewed-by: Jerome Brunet <jbrunet@...libre.com>
> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
> ---

Applied to clk-next