linux-kernel - Re: [PATCH v4 02/12] clk: sunxi-ng: Use u64 for calculation of nkmp rate

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Message-ID: <20180208080335.uduk2aa6vdkaa5n3@flea>
Date:   Thu, 8 Feb 2018 09:03:35 +0100
From:   Maxime Ripard <maxime.ripard@...tlin.com>
To:     Jernej Skrabec <jernej.skrabec@...l.net>
Cc:     wens@...e.org, airlied@...ux.ie, robh+dt@...nel.org,
        mark.rutland@....com, mturquette@...libre.com, sboyd@...nel.org,
        architt@...eaurora.org, a.hajda@...sung.com,
        Laurent.pinchart@...asonboard.com, narmstrong@...libre.com,
        Jose.Abreu@...opsys.com, dri-devel@...ts.freedesktop.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-sunxi@...glegroups.com
Subject: Re: [PATCH v4 02/12] clk: sunxi-ng: Use u64 for calculation of nkmp
 rate

On Wed, Feb 07, 2018 at 10:17:03PM +0100, Jernej Skrabec wrote:
> When parent rate is 24MHz and multiplier N >= 180, intermediate clock
> rate doesn't fit in 32 bit variable anymore.
> 
> Because of that, introduce function for calculating clock rate which
> uses 64 bit variable for intermediate result.
> 
> Signed-off-by: Jernej Skrabec <jernej.skrabec@...l.net>

Acked-by: Maxime Ripard <maxime.ripard@...tlin.com>

Thanks!
Maxime

-- 
Maxime Ripard, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
http://bootlin.com

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