From: Nishanth Menon <nm@ti.com>
To: Lukasz Luba <lukasz.luba@arm.com>
Cc: <linux-kernel@vger.kernel.org>, <linux-pm@vger.kernel.org>,
<devicetree@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>, <vireshk@kernel.org>,
<robh+dt@kernel.org>, <sboyd@kernel.org>, <rafael@kernel.org>,
<sudeep.holla@arm.com>, <daniel.lezcano@linaro.org>,
<Dietmar.Eggemann@arm.com>
Subject: Re: [PATCH 1/4] dt-bindings: opp: Introduce opp-sustainable bindings
Date: Wed, 28 Oct 2020 16:47:13 -0500 [thread overview]
Message-ID: <20201028214713.zttk47qtua5jhieo@pureness> (raw)
In-Reply-To: <20201028140847.1018-2-lukasz.luba@arm.com>
On 14:08-20201028, Lukasz Luba wrote:
> Add opp-sustainable as an additional property in the OPP node to describe
> the sustainable performance level of the device. This will help to
> estimate the sustainable performance of the whole system.
>
> Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
> ---
> Documentation/devicetree/bindings/opp/opp.txt | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/opp/opp.txt b/Documentation/devicetree/bindings/opp/opp.txt
> index 9847dfeeffcb..cd01028de305 100644
> --- a/Documentation/devicetree/bindings/opp/opp.txt
> +++ b/Documentation/devicetree/bindings/opp/opp.txt
> @@ -154,6 +154,10 @@ Optional properties:
> - opp-suspend: Marks the OPP to be used during device suspend. If multiple OPPs
> in the table have this, the OPP with highest opp-hz will be used.
>
> +- opp-sustainable: Marks the OPP as sustainable. This property can be used for
> + estimating sustainable performance of the whole system. If multiple OPPs in
> + the table have this, the OPP with highest opp-hz will be used.
By "sustainable", do you mean sustainable across Process, Voltage and
Temperature corners upto the max rated operational Power-ON hours
without IDLE state being achieved on the processor?
OR do you mean to leave it up to interpretation?
> +
> - opp-supported-hw: This property allows a platform to enable only a subset of
> the OPPs from the larger set present in the OPP table, based on the current
> version of the hardware (already known to the operating system).
> --
> 2.17.1
>
--
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3 1A34 DDB5 849D 1736 249D
next prev parent reply other threads:[~2020-10-28 21:47 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-28 14:08 [PATCH 0/4] Add sustainable OPP concept Lukasz Luba
2020-10-28 14:08 ` [PATCH 1/4] dt-bindings: opp: Introduce opp-sustainable bindings Lukasz Luba
2020-10-28 21:47 ` Nishanth Menon [this message]
2020-10-29 10:04 ` Lukasz Luba
2020-10-29 12:59 ` Nishanth Menon
2020-10-29 13:33 ` Lukasz Luba
2020-10-29 13:49 ` Nishanth Menon
2020-10-29 14:20 ` Lukasz Luba
2020-10-30 19:34 ` Rob Herring
2020-11-02 8:40 ` Lukasz Luba
2020-10-28 14:08 ` [PATCH 2/4] OPP: Add support for parsing the 'opp-sustainable' property Lukasz Luba
2020-10-30 11:47 ` Quentin Perret
2020-10-30 12:53 ` Lukasz Luba
2020-10-28 14:08 ` [PATCH 3/4] OPP: Add dev_pm_opp_set_sustainable_opp_freq() Lukasz Luba
2020-10-28 14:08 ` [PATCH 4/4] firmware: arm_scmi/perf: Mark sustainable OPP Lukasz Luba
2020-10-29 7:40 ` [PATCH 0/4] Add sustainable OPP concept Viresh Kumar
2020-10-29 7:53 ` Viresh Kumar
2020-10-29 9:56 ` Lukasz Luba
2020-10-30 8:29 ` Viresh Kumar
2020-10-30 9:19 ` Lukasz Luba
2020-10-30 9:52 ` Viresh Kumar
2020-10-30 10:56 ` Lukasz Luba
2020-10-30 11:17 ` Viresh Kumar
2020-10-30 12:40 ` Lukasz Luba
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