linux-kernel - Re: [Patch 2/2] cpufreq: tegra194: Fix unlisted boot freq warning

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Message-ID: <20200924085650.GB2483160@ulmo>
Date:   Thu, 24 Sep 2020 10:56:50 +0200
From:   Thierry Reding <thierry.reding@...il.com>
To:     Sumit Gupta <sumitg@...dia.com>
Cc:     viresh.kumar@...aro.org, rjw@...ysocki.net, jonathanh@...dia.com,
        linux-pm@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        ksitaraman@...dia.com, bbasu@...dia.com
Subject: Re: [Patch 2/2] cpufreq: tegra194: Fix unlisted boot freq warning

On Wed, Sep 16, 2020 at 10:41:17PM +0530, Sumit Gupta wrote:
> Warning coming during boot because the boot freq set by bootloader
> gets filtered out due to big freq steps while creating freq_table.
> Fixing this by setting closest ndiv value from freq_table.
> Warning:
>   cpufreq: cpufreq_online: CPU0: Running at unlisted freq
>   cpufreq: cpufreq_online: CPU0: Unlisted initial frequency changed
> 
> Also, added change in init to wait till current frequency becomes
> equal or near to the previously requested frequency. This is done
> because it takes some time to restore the previous frequency while
> turning-on non-boot cores during exit from SC7(Suspend-to-RAM).
> 
> Signed-off-by: Sumit Gupta <sumitg@...dia.com>
> ---
>  drivers/cpufreq/tegra194-cpufreq.c | 118 ++++++++++++++++++++++++++++++++++---
>  1 file changed, 111 insertions(+), 7 deletions(-)

Acked-by: Thierry Reding <treding@...dia.com>

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