linux-kernel - Re: [PATCH V2] clk: imx: pllv4: add fractional-N pll support

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Message-ID: <155674445915.200842.2835083854881674143@swboyd.mtv.corp.google.com>
Date:   Wed, 01 May 2019 14:00:59 -0700
From:   Stephen Boyd <sboyd@...nel.org>
To:     "festevam@...il.com" <festevam@...il.com>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-clk@...r.kernel.org" <linux-clk@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "mturquette@...libre.com" <mturquette@...libre.com>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        Aisheng Dong <aisheng.dong@....com>,
        Anson Huang <anson.huang@....com>
Cc:     dl-linux-imx <linux-imx@....com>
Subject: Re: [PATCH V2] clk: imx: pllv4: add fractional-N pll support

The Content-transfer-encoding header is still base64. I guess it can't
be fixed.

Quoting Anson Huang (2019-04-29 17:57:22)
> The pllv4 supports fractional-N function, the formula is:
> 
> PLL output freq = input * (mult + num/denom),
> 
> This patch adds fractional-N function support, including
> clock round rate, calculate rate and set rate, with this
> patch, the clock rate of APLL in clock tree is more accurate
> than before:
>