From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Boyd Subject: Re: [PATCH 1/2] clk: fractional-divider: allow overriding of approximation Date: Mon, 7 Aug 2017 16:02:30 -0700 Message-ID: <20170807230230.GY2146@codeaurora.org> References: <1500624187-12165-1-git-send-email-zhangqing@rock-chips.com> <5990882.df1suBpf8V@phil> <5453089.AIzWDZk3ey@phil> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <5453089.AIzWDZk3ey@phil> Sender: linux-kernel-owner@vger.kernel.org To: Heiko Stuebner Cc: Elaine Zhang , mturquette@baylibre.com, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, huangtao@rock-chips.com, cl@rock-chips.com, xxx@rock-chips.com, xf@rock-chips.com List-Id: linux-rockchip.vger.kernel.org On 08/01, Heiko Stuebner wrote: > From: Elaine Zhang > > 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 > --- Acked-by: Stephen Boyd -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project