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Subject: Re: [PATCH v7 11/20] cpufreq: tegra124: Add suspend and resume
 support
To:     Viresh Kumar <viresh.kumar@linaro.org>
CC:     <thierry.reding@gmail.com>, <jonathanh@nvidia.com>,
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References: <1564607463-28802-1-git-send-email-skomatineni@nvidia.com>
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 <20190801054055.trmabmcaj3cpe4pc@vireshk-i7>
From:   Sowjanya Komatineni <skomatineni@nvidia.com>
Message-ID: <69aba3b2-d021-4851-d058-fcaa70446f58@nvidia.com>
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On 7/31/19 10:40 PM, Viresh Kumar wrote:
> On 31-07-19, 14:10, Sowjanya Komatineni wrote:
>> This patch adds suspend and resume pm ops for cpufreq driver.
>>
>> PLLP is the safe clock source for CPU during system suspend and
>> resume as PLLP rate is below the CPU Fmax at Vmin.
>>
>> CPUFreq driver suspend switches the CPU clock source to PLLP and
>> disables the DFLL clock.
>>
>> During system resume, warmboot code powers up the CPU with PLLP
>> clock source. So CPUFreq driver resume enabled DFLL clock and
>> switches CPU back to DFLL clock source.
>>
>> Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
>> ---
>>   drivers/cpufreq/tegra124-cpufreq.c | 60 ++++++++++++++++++++++++++++++++++++++
>>   1 file changed, 60 insertions(+)
> Is there any hard dependency of this patch on the rest of the patches?
> Can I apply it alone to cpufreq tree ?
>
This patch cannot be applied alone as it has dependency on dfll clock 
suspend and resume sequence.