linux-kernel - Re: [PATCH 3/3] clk: keystone: sci-clk: add 10% slack to set

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Message-ID: <160080477208.310579.10011892284968417590@swboyd.mtv.corp.google.com>
Date:   Tue, 22 Sep 2020 12:59:32 -0700
From:   Stephen Boyd <sboyd@...nel.org>
To:     Tero Kristo <t-kristo@...com>, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, ssantosh@...nel.org
Cc:     mturquette@...libre.com
Subject: Re: [PATCH 3/3] clk: keystone: sci-clk: add 10% slack to set_rate

Quoting Tero Kristo (2020-09-07 01:57:40)
> Currently, we request exact clock rates from the firmware to be set with
> set_rate. Due to some rounding errors and internal functionality of the
> firmware itself, this can fail. Thus, add some slack to the set_rate
> functionality so that we are always guaranteed to pass. The firmware
> always attempts to use frequency as close to the target freq as
> possible despite the slack given here.
> 
> Signed-off-by: Tero Kristo <t-kristo@...com>
> ---

Applied to clk-next