linux-kernel - Re: [PATCH v5 09/21] clk: tegra: pll: Add logic for handling SDM data

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Date:	Mon, 18 May 2015 15:35:14 -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 09/21] clk: tegra: pll: Add logic for handling SDM data

On Tue, May 12, 2015 at 10:23 AM, Rhyland Klein <rklein@...dia.com> wrote:
> This adds logic for taking SDM_DIN (Sigma Delta Modulator) setting into
> the equation to calculate the effective N value for PLL which supports
> fractional divider.
>
> The effective N = NDIV + 1/2 + SDM_DIN/2^13, where NDIV is the integer
> feedback divider.
>
> Signed-off-by: Rhyland Klein <rklein@...dia.com>

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

Thanks for making the suggested changes.
> ---
> v5:
>   - made use of sdm_en_mask when possible to clean up logic
>   - added kerneldoc info for new struct params
>   - Added info about SDM near sdm_set_data
>   - rewrote check in sdm_set_data to make it clearer




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