From: Stephen Boyd <sboyd-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
To: Viresh Kumar <viresh.kumar-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Cc: Rafael Wysocki <rjw-LthD3rsA81gm4RdzfppkhA@public.gmane.org>,
nm-l0cyMroinI0@public.gmane.org,
Viresh Kumar <vireshk-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
linaro-kernel-cunTk1MwBs8s++Sfvej+rw@public.gmane.org,
linux-pm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Vincent Guittot
<vincent.guittot-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
d-gerlach-l0cyMroinI0@public.gmane.org,
broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH V2 1/8] PM / OPP: Reword binding supporting multiple regulators per device
Date: Mon, 24 Oct 2016 15:48:52 -0700 [thread overview]
Message-ID: <20161024224852.GQ26139@codeaurora.org> (raw)
In-Reply-To: <891ef8705e13dff331a3135647f4c18f88402a12.1476952750.git.viresh.kumar-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
On 10/20, Viresh Kumar wrote:
> On certain platforms (like TI), DVFS for a single device (CPU) requires
> configuring multiple power supplies.
>
> The OPP bindings already contains binding and example to explain this
> case, but it isn't sufficient. For example, there is no way for the code
> parsing these bindings to know which voltage values belong to which
> power supply. Also its not possible to know the order in which the
> supplies need to be configured while switching OPPs.
>
> This patch tries to clarify on those details and does some minor changes
> as well.
>
> Note that the bindings do not specify the order in which the regulators
> need to be programmed and the order in which the entries are added for
> the supplies.
>
> The user of the bindings (like the kernel) shall know these details
> already and the DT is responsible to supply only the readings for the
> regulators.
>
> Cc: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
> Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> Signed-off-by: Viresh Kumar <viresh.kumar-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
> Acked-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
> ---
Reviewed-by: Stephen Boyd <sboyd-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
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Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
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WARNING: multiple messages have this Message-ID (diff)
From: Stephen Boyd <sboyd@codeaurora.org>
To: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Rafael Wysocki <rjw@rjwysocki.net>,
nm@ti.com, Viresh Kumar <vireshk@kernel.org>,
linaro-kernel@lists.linaro.org, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org,
Vincent Guittot <vincent.guittot@linaro.org>,
robh@kernel.org, d-gerlach@ti.com, broonie@kernel.org,
devicetree@vger.kernel.org
Subject: Re: [PATCH V2 1/8] PM / OPP: Reword binding supporting multiple regulators per device
Date: Mon, 24 Oct 2016 15:48:52 -0700 [thread overview]
Message-ID: <20161024224852.GQ26139@codeaurora.org> (raw)
In-Reply-To: <891ef8705e13dff331a3135647f4c18f88402a12.1476952750.git.viresh.kumar@linaro.org>
On 10/20, Viresh Kumar wrote:
> On certain platforms (like TI), DVFS for a single device (CPU) requires
> configuring multiple power supplies.
>
> The OPP bindings already contains binding and example to explain this
> case, but it isn't sufficient. For example, there is no way for the code
> parsing these bindings to know which voltage values belong to which
> power supply. Also its not possible to know the order in which the
> supplies need to be configured while switching OPPs.
>
> This patch tries to clarify on those details and does some minor changes
> as well.
>
> Note that the bindings do not specify the order in which the regulators
> need to be programmed and the order in which the entries are added for
> the supplies.
>
> The user of the bindings (like the kernel) shall know these details
> already and the DT is responsible to supply only the readings for the
> regulators.
>
> Cc: Mark Brown <broonie@kernel.org>
> Cc: devicetree@vger.kernel.org
> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
> Acked-by: Rob Herring <robh@kernel.org>
> ---
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
next prev parent reply other threads:[~2016-10-24 22:48 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-20 8:44 [PATCH V2 0/8] PM / OPP: Multiple regulator support Viresh Kumar
2016-10-20 8:44 ` [PATCH V2 1/8] PM / OPP: Reword binding supporting multiple regulators per device Viresh Kumar
[not found] ` <891ef8705e13dff331a3135647f4c18f88402a12.1476952750.git.viresh.kumar-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2016-10-24 22:48 ` Stephen Boyd [this message]
2016-10-24 22:48 ` Stephen Boyd
2016-10-20 8:44 ` [PATCH V2 2/8] PM / OPP: Don't use OPP structure outside of rcu protected section Viresh Kumar
2016-10-24 22:52 ` Stephen Boyd
2016-10-25 3:37 ` Viresh Kumar
2016-10-20 8:44 ` [PATCH V2 3/8] PM / OPP: Manage supply's voltage/current in a separate structure Viresh Kumar
2016-10-20 8:44 ` [PATCH V2 4/8] PM / OPP: Pass struct dev_pm_opp_supply to _set_opp_voltage() Viresh Kumar
2016-10-24 23:14 ` Stephen Boyd
2016-10-25 3:45 ` Viresh Kumar
2016-10-25 20:26 ` Stephen Boyd
2016-10-26 3:34 ` Viresh Kumar
2016-10-20 8:44 ` [PATCH V2 5/8] PM / OPP: Add infrastructure to manage multiple regulators Viresh Kumar
2016-10-21 22:32 ` Dave Gerlach
2016-10-21 22:32 ` Dave Gerlach
2016-10-24 3:35 ` Viresh Kumar
2016-10-25 16:49 ` Stephen Boyd
2016-10-26 6:05 ` Viresh Kumar
2016-11-10 1:37 ` Stephen Boyd
2016-10-20 8:45 ` [PATCH V2 6/8] PM / OPP: Separate out _generic_opp_set_rate() Viresh Kumar
2016-10-25 18:59 ` Stephen Boyd
2016-10-26 6:07 ` Viresh Kumar
2016-10-20 8:45 ` [PATCH V2 7/8] PM / OPP: Allow platform specific custom opp_set_rate() callbacks Viresh Kumar
2016-10-25 19:01 ` Stephen Boyd
2016-10-26 6:07 ` Viresh Kumar
2016-10-20 8:45 ` [PATCH V2 8/8] PM / OPP: Don't WARN on multiple calls to dev_pm_opp_set_regulators() Viresh Kumar
2016-10-25 19:01 ` Stephen Boyd
2016-10-21 13:39 ` [PATCH V2 0/8] PM / OPP: Multiple regulator support Rafael J. Wysocki
2016-10-21 15:40 ` Viresh Kumar
2016-10-24 1:08 ` Dave Gerlach
2016-10-24 4:26 ` Viresh Kumar
2016-10-25 21:13 ` Dave Gerlach
2016-10-26 3:21 ` Viresh Kumar
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