linux-kernel - Re: [PATCH v5 10/21] clk: tegra: pll: Add logic for out-of-table rates for T210

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Message-ID: <CANLzEksWoyJ9o6EcaktfqU8X-z7Pdg_weYaovjyb_SsGRGRC9g@mail.gmail.com>
Date:	Tue, 12 May 2015 17:01:38 -0700
From:	Benson Leung <bleung@...omium.org>
To:	Rhyland Klein <rklein@...dia.com>
Cc:	Peter De Schrijver <pdeschrijver@...dia.com>,
	Mike Turquette <mturquette@...aro.org>,
	Stephen Warren <swarren@...dotorg.org>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Thierry Reding <thierry.reding@...il.com>,
	Alexandre Courbot <gnurou@...il.com>,
	Bill Huang <bilhuang@...dia.com>,
	Paul Walmsley <pwalmsley@...dia.com>,
	Jim Lin <jilin@...dia.com>, linux-clk@...r.kernel.org,
	linux-tegra@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 10/21] clk: tegra: pll: Add logic for out-of-table
 rates for T210

On Tue, May 12, 2015 at 10:23 AM, Rhyland Klein <rklein@...dia.com> wrote:
> For Tegra210, the logic to calculate out-of-table rates is different
> from previous generations. Add callbacks that can be overridden to
> allow for different ways of calculating rates. Default to
> _cal_rate when not specified.
>
> This patch also includes a new flag which is used to set which method
> of fixed_mdiv calculation is used. The new method for calculating the
> fixed divider value for M can be more accurate especially when
> fractional dividers are in play. This allows for older chipsets to use
> the existing logic and new generations to use a newer version which
> may work better for them.
>
> Based on original work by Aleksandr Frid <afrid@...dia.com>
>
> Signed-off-by: Rhyland Klein <rklein@...dia.com>

Reviewed-by: Benson Leung <bleung@...omium.org>

> ---
> v5:
>   - Updated description to include mentioning the NEW_MDIV flag
>   - Added kerneldoc info for new members




-- 
Benson Leung
Software Engineer, Chrom* OS
bleung@...omium.org
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