From: Heiko Stuebner <heiko@sntech.de>
To: Elaine Zhang <zhangqing@rock-chips.com>
Cc: mturquette@baylibre.com, sboyd@codeaurora.org,
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
Subject: Re: [PATCH 1/2] clk: fractional-divider: allow overriding of approximation
Date: Tue, 08 Aug 2017 17:58:22 +0200 [thread overview]
Message-ID: <1694589.HBVVhCKeO5@phil> (raw)
In-Reply-To: <5453089.AIzWDZk3ey@phil>
Am Dienstag, 1. August 2017, 18:21:22 CEST schrieb Heiko Stuebner:
> From: Elaine Zhang <zhangqing@rock-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@rock-chips.com>
applied for 4.14 with Stephen's Ack
Heiko
next prev parent reply other threads:[~2017-08-08 15:58 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-21 8:03 [PATCH v3] clk: fractional-divider: fix up the fractional clk's jitter Elaine Zhang
2017-08-01 16:19 ` Heiko Stuebner
2017-08-01 16:21 ` [PATCH 1/2] clk: fractional-divider: allow overriding of approximation Heiko Stuebner
2017-08-02 3:43 ` Elaine Zhang
2017-08-07 23:02 ` Stephen Boyd
2017-08-08 15:58 ` Heiko Stuebner [this message]
2017-08-01 16:22 ` [PATCH 2/2] clk: rockchip: add special approximation to fix up fractional clk's jitter Heiko Stuebner
2017-08-02 3:43 ` Elaine Zhang
2017-08-08 15:58 ` Heiko Stuebner
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1694589.HBVVhCKeO5@phil \
--to=heiko@sntech.de \
--cc=cl@rock-chips.com \
--cc=huangtao@rock-chips.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-clk@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rockchip@lists.infradead.org \
--cc=mturquette@baylibre.com \
--cc=sboyd@codeaurora.org \
--cc=xf@rock-chips.com \
--cc=xxx@rock-chips.com \
--cc=zhangqing@rock-chips.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).