linux-kernel - Re: [PATCH 01/15] clk: sunxi-ng: Add check for minimal rate to NM PLLs

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Message-ID: <20180226093800.uwbo54wrdcwmsyzh@flea.lan>
Date:   Mon, 26 Feb 2018 10:38:00 +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,
        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 01/15] clk: sunxi-ng: Add check for minimal rate to NM
 PLLs

Hi,

On Sat, Feb 24, 2018 at 10:45:31PM +0100, Jernej Skrabec wrote:
> Some NM PLLs doesn't work well when their output clock rate is set below
> certain rate.
> 
> Add support for that constrain.

In such a case, you should round the rate to the minimum the clock can
operate at, and not return an error.

Thanks!
Maxime

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

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