linux-kernel - Re: [PATCH 1/3] opp: of: Support multiple suspend OPPs defined in DT

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Message-ID: <20190709075119.rg6ktsg7nwdadsmd@vireshk-i7>
Date:   Tue, 9 Jul 2019 13:21:19 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Anson.Huang@....com
Cc:     robh+dt@...nel.org, mark.rutland@....com, shawnguo@...nel.org,
        s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com,
        vireshk@...nel.org, nm@...com, sboyd@...nel.org,
        leonard.crestez@....com, aisheng.dong@....com,
        daniel.baluta@....com, ping.bai@....com, l.stach@...gutronix.de,
        abel.vesa@....com, ccaione@...libre.com, angus@...ea.ca,
        andrew.smirnov@...il.com, agx@...xcpu.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        Linux-imx@....com
Subject: Re: [PATCH 1/3] opp: of: Support multiple suspend OPPs defined in DT

On 09-07-19, 15:10, Anson.Huang@....com wrote:
> From: Anson Huang <Anson.Huang@....com>
> 
> With property "opp-supported-hw" introduced, the OPP table
> in DT could be a large OPP table and ONLY a subset of OPPs
> are available, based on the version of the hardware running
> on. That introduces restriction of using "opp-suspend"
> property to define the suspend OPP, as we are NOT sure if the
> OPP containing "opp-suspend" property is available for the
> hardware running on, and the of opp core does NOT allow multiple
> suspend OPPs defined in DT OPP table.
> 
> To eliminate this restrition, make of opp core allow multiple
> suspend OPPs defined in DT, and pick the OPP with highest rate
> and with "opp-suspend" property present to be suspend OPP, it
> can speed up the suspend/resume process.
> 
> Signed-off-by: Anson Huang <Anson.Huang@....com>
> ---
>  drivers/opp/of.c | 9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)

Please update the DT bindings first.

FWIW, all three patches look fine otherwise.

-- 
viresh