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Date: Tue, 08 Aug 2017 17:58:22 +0200
From: Heiko Stuebner <heiko@...ech.de>
To: Elaine Zhang <zhangqing@...k-chips.com>
Cc: mturquette@...libre.com, sboyd@...eaurora.org,
linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-rockchip@...ts.infradead.org,
linux-arm-kernel@...ts.infradead.org, huangtao@...k-chips.com,
cl@...k-chips.com, xxx@...k-chips.com, xf@...k-chips.com
Subject: Re: [PATCH 1/2] clk: fractional-divider: allow overriding of approximation
Am Dienstag, 1. August 2017, 18:21:22 CEST schrieb Heiko Stuebner:
> From: Elaine Zhang <zhangqing@...k-chips.com>
>
> Fractional dividers may have special requirements concerning numerator
> and denominator selection that differ from just getting the best
> approximation.
>
> For example on Rockchip socs the denominator must be at least 20 times
> larger than the numerator to generate precise clock frequencies.
>
> Therefore add the ability to provide custom approximation functions.
>
> Signed-off-by: Elaine Zhang <zhangqing@...k-chips.com>
applied for 4.14 with Stephen's Ack
Heiko
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