linux-kernel - Re: [Patch v2 0/2] Improvements to the Tegra CPUFREQ driver

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Message-ID: <961ffcb4-a9c6-2916-7b90-4a38b0ad465c@nvidia.com>
Date:   Tue, 19 Sep 2023 16:58:07 +0530
From:   Sumit Gupta <sumitg@...dia.com>
To:     <rafael@...nel.org>, <viresh.kumar@...aro.org>,
        <linux-pm@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC:     <treding@...dia.com>, <jonathanh@...dia.com>, <bbasu@...dia.com>,
        <amiettinen@...dia.com>, Sumit Gupta <sumitg@...dia.com>
Subject: Re: [Patch v2 0/2] Improvements to the Tegra CPUFREQ driver

Gentle Ping.

Thank you,
Sumit Gupta


On 01/09/23 22:11, Sumit Gupta wrote:
> This patch set adds below improvements to the Tegra194 CPUFREQ driver.
> They are applicable to all the Tegra SoC's supported by the driver.
> 
> 1) Patch 1: Avoid making SMP call on every frequency request to reduce
>     the time for frequency set and get calls.
> 
> 2) Patch 2: Use reference clock count based loop instead of udelay()
>     to improve the accuracy of re-generated CPU frequency.
> 
> The patches are not related but have minor conflict. So, need to be
> applied in order of patch numbers. If 'Patch 2' is to be applied first
> then will rebase that and send separately.
> 
> Sumit Gupta (2):
>    cpufreq: tegra194: save CPU data to avoid repeated SMP calls
>    cpufreq: tegra194: use refclk delta based loop instead of udelay
> 
>   drivers/cpufreq/tegra194-cpufreq.c | 151 ++++++++++++++++++++---------
>   1 file changed, 106 insertions(+), 45 deletions(-)
>