linux-kernel - Re: [PATCH v1] clk: tegra20/30: Optimize PLLX configuration restoring

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Message-ID: <20191029131714.GD508460@ulmo>
Date:   Tue, 29 Oct 2019 14:17:14 +0100
From:   Thierry Reding <thierry.reding@...il.com>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     Michael Turquette <mturquette@...libre.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Peter De Schrijver <pdeschrijver@...dia.com>,
        Prashant Gaikwad <pgaikwad@...dia.com>,
        Stephen Boyd <sboyd@...nel.org>, linux-clk@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] clk: tegra20/30: Optimize PLLX configuration restoring

On Mon, Sep 23, 2019 at 12:52:03AM +0300, Dmitry Osipenko wrote:
> There is no need to re-configure PLLX if its configuration in unchanged
> on return from suspend / cpuidle, this saves 300us if PLLX is already
> enabled (common case for cpuidle).
> 
> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
> ---
>  drivers/clk/tegra/clk-tegra20.c | 25 ++++++++++++++++---------
>  drivers/clk/tegra/clk-tegra30.c | 25 ++++++++++++++++---------
>  2 files changed, 32 insertions(+), 18 deletions(-)

Applied to for-5.5/clk, thanks.

Thierry

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