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Date:   Mon, 17 Jun 2019 09:56:54 +0530
From:   Viresh Kumar <>
To:     Rajendra Nayak <>
Subject: Re: [RFC v2 00/11] DVFS in the OPP core

On 20-03-19, 15:19, Rajendra Nayak wrote:
> This is a v2 of the RFC posted earlier by Stephen Boyd [1]
> As part of v2 I still follow the same approach of dev_pm_opp_set_rate()
> API using clk framework to round the frequency passed and making it
> accept 0 as a valid frequency indicating the frequency isn't required
> anymore. It just has a few more drivers converted to use this approach
> like dsi/dpu and ufs.
> ufs demonstrates the case of having to handle multiple power domains, one
> of which is scalable.
> The patches are based on 5.1-rc1 and depend on some ufs fixes I posted
> earlier [2] and a DT patch to include the rpmpd header [3]
> [1]
> [2]
> [3]
> Rajendra Nayak (10):
>   OPP: Make dev_pm_opp_set_rate() with freq=0 as valid
> Stephen Boyd (1):
>   OPP: Don't overwrite rounded clk rate

I have applied modified version of these two patches to the OPP tree now.


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