From: Viresh Kumar <viresh.kumar@linaro.org>
To: Saravana Kannan <saravanak@google.com>
Cc: Georgi Djakov <georgi.djakov@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Viresh Kumar <vireshk@kernel.org>, Nishanth Menon <nm@ti.com>,
Stephen Boyd <sboyd@kernel.org>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
vincent.guittot@linaro.org, seansw@qti.qualcomm.com,
daidavid1@codeaurora.org, Rajendra Nayak <rnayak@codeaurora.org>,
sibis@codeaurora.org, bjorn.andersson@linaro.org,
evgreen@chromium.org, kernel-team@android.com,
linux-pm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 1/6] dt-bindings: opp: Introduce opp-peak-KBps and opp-avg-KBps bindings
Date: Wed, 17 Jul 2019 13:24:48 +0530 [thread overview]
Message-ID: <20190717075448.xlyg2ddewlci3abg@vireshk-i7> (raw)
In-Reply-To: <20190703011020.151615-2-saravanak@google.com>
On 02-07-19, 18:10, Saravana Kannan wrote:
> Interconnects often quantify their performance points in terms of
> bandwidth. So, add opp-peak-KBps (required) and opp-avg-KBps (optional) to
> allow specifying Bandwidth OPP tables in DT.
>
> opp-peak-KBps is a required property that replace opp-hz for Bandwidth OPP
> tables.
>
> opp-avg-KBps is an optional property that can be used in Bandwidth OPP
> tables.
>
> Signed-off-by: Saravana Kannan <saravanak@google.com>
> ---
> Documentation/devicetree/bindings/opp/opp.txt | 15 ++++++++++++---
> 1 file changed, 12 insertions(+), 3 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/opp/opp.txt b/Documentation/devicetree/bindings/opp/opp.txt
> index 76b6c79604a5..c869e87caa2a 100644
> --- a/Documentation/devicetree/bindings/opp/opp.txt
> +++ b/Documentation/devicetree/bindings/opp/opp.txt
> @@ -83,9 +83,14 @@ properties.
>
> Required properties:
> - opp-hz: Frequency in Hz, expressed as a 64-bit big-endian integer. This is a
> - required property for all device nodes but devices like power domains. The
> - power domain nodes must have another (implementation dependent) property which
> - uniquely identifies the OPP nodes.
> + required property for all device nodes but for devices like power domains or
> + bandwidth opp tables. The power domain nodes must have another (implementation
> + dependent) property which uniquely identifies the OPP nodes. The interconnect
> + opps are required to have the opp-peak-bw property.
??
> +
> +- opp-peak-KBps: Peak bandwidth in kilobytes per second, expressed as a 32-bit
> + big-endian integer. This is a required property for all devices that don't
> + have opp-hz. For example, bandwidth OPP tables for interconnect paths.
>
> Optional properties:
> - opp-microvolt: voltage in micro Volts.
> @@ -132,6 +137,10 @@ Optional properties:
> - opp-level: A value representing the performance level of the device,
> expressed as a 32-bit integer.
>
> +- opp-avg-KBps: Average bandwidth in kilobytes per second, expressed as a
> + 32-bit big-endian integer. This property is only meaningful in OPP tables
> + where opp-peak-KBps is present.
> +
> - clock-latency-ns: Specifies the maximum possible transition latency (in
> nanoseconds) for switching to this OPP from any other OPP.
>
> --
> 2.22.0.410.gd8fdbe21b5-goog
--
viresh
next prev parent reply other threads:[~2019-07-17 7:54 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-03 1:10 [PATCH v3 0/6] Introduce Bandwidth OPPs for interconnect paths Saravana Kannan
2019-07-03 1:10 ` [PATCH v3 1/6] dt-bindings: opp: Introduce opp-peak-KBps and opp-avg-KBps bindings Saravana Kannan
2019-07-16 17:25 ` Sibi Sankar
2019-07-16 18:58 ` Saravana Kannan
2019-07-22 23:35 ` Rob Herring
2019-07-22 23:40 ` Saravana Kannan
2019-07-23 14:26 ` Rob Herring
2019-07-24 0:18 ` Saravana Kannan
2019-07-17 7:54 ` Viresh Kumar [this message]
2019-07-17 20:29 ` Saravana Kannan
2019-07-18 4:35 ` Viresh Kumar
2019-07-18 17:26 ` Saravana Kannan
2019-07-26 16:24 ` Georgi Djakov
2019-07-26 19:08 ` Saravana Kannan
2019-07-03 1:10 ` [PATCH v3 2/6] OPP: Add support for bandwidth OPP tables Saravana Kannan
2019-07-16 17:33 ` Sibi Sankar
2019-07-16 19:10 ` Saravana Kannan
2019-07-30 10:57 ` Amit Kucheria
2019-07-30 23:20 ` Saravana Kannan
2019-07-03 1:10 ` [PATCH v3 3/6] OPP: Add helper function " Saravana Kannan
2019-07-03 1:10 ` [PATCH v3 4/6] OPP: Add API to find an OPP table from its DT node Saravana Kannan
2019-07-03 1:10 ` [PATCH v3 5/6] dt-bindings: interconnect: Add interconnect-opp-table property Saravana Kannan
2019-07-22 23:39 ` Rob Herring
2019-07-22 23:43 ` Saravana Kannan
2019-07-23 2:21 ` Viresh Kumar
2019-07-03 1:10 ` [PATCH v3 6/6] interconnect: Add OPP table support for interconnects Saravana Kannan
2019-07-03 6:45 ` Vincent Guittot
2019-07-03 21:33 ` Saravana Kannan
2019-07-04 7:12 ` Vincent Guittot
2019-07-07 21:48 ` Saravana Kannan
2019-07-09 7:25 ` Vincent Guittot
2019-07-09 19:02 ` Saravana Kannan
2019-07-15 8:16 ` Vincent Guittot
2019-07-16 0:55 ` Saravana Kannan
2019-07-24 7:16 ` Vincent Guittot
2019-07-26 16:25 ` Georgi Djakov
2019-07-26 19:08 ` Saravana Kannan
2019-07-03 6:36 ` [PATCH v3 0/6] Introduce Bandwidth OPPs for interconnect paths Viresh Kumar
2019-07-03 20:35 ` Saravana Kannan
2019-07-17 10:32 ` Viresh Kumar
2019-07-17 20:34 ` Saravana Kannan
2019-07-18 5:37 ` Viresh Kumar
2019-07-19 4:12 ` Saravana Kannan
2019-07-29 9:24 ` Viresh Kumar
2019-07-29 20:12 ` Saravana Kannan
2019-07-30 3:01 ` Viresh Kumar
2019-08-03 1:20 ` Saravana Kannan
2019-08-03 7:36 ` Saravana Kannan
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