linux-kernel - Re: [PATCH v3 1/4] clk: bcm2835: add a round up ability to the clock divisor

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Message-Id: <268944A6-84F0-41F5-B84F-C9C1E9012575@sperl.org>
Date:	Sun, 10 Jan 2016 17:27:38 +0100
From:	Martin Sperl <martin@...rl.org>
To:	Remi Pommarel <repk@...plefau.lt>
Cc:	Stephen Warren <swarren@...dotorg.org>,
	Eric Anholt <eric@...olt.net>, Lee Jones <lee@...nel.org>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Rob Herring <robh+dt@...nel.org>, linux-kernel@...r.kernel.org,
	linux-rpi-kernel@...ts.infradead.org, linux-clk@...r.kernel.org
Subject: Re: [PATCH v3 1/4] clk: bcm2835: add a round up ability to the clock divisor


> On 06.12.2015, at 17:22, Remi Pommarel <repk@...plefau.lt> wrote:
> 
> Make bcm2835_clock_choose_div to optionally round up the chosen MASH divisor
> so that the resulting average rate will not be higher than the requested one.
> 
> Signed-off-by: Remi Pommarel <repk@...plefau.lt>

Note that investigations have shown that the fractional Divider is not used
unless we have HW-MASH enabled.

I got some basic support in a patch that I shall share as soon as I have done
some more testing…

Ciao,
	Martin