Linux-PM Archive on lore.kernel.org
 help / color / Atom feed
From: Viresh Kumar <viresh.kumar@linaro.org>
To: Saravana Kannan <saravanak@google.com>
Cc: MyungJoo Ham <myungjoo.ham@samsung.com>,
	Kyungmin Park <kyungmin.park@samsung.com>,
	Chanwoo Choi <cw00.choi@samsung.com>,
	Viresh Kumar <vireshk@kernel.org>, Nishanth Menon <nm@ti.com>,
	Stephen Boyd <sboyd@kernel.org>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	Android Kernel Team <kernel-team@android.com>,
	Linux PM <linux-pm@vger.kernel.org>,
	LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v1 0/3] Add required-opps support to devfreq passive gov
Date: Tue, 25 Jun 2019 09:40:54 +0530
Message-ID: <20190625041054.2ceuvnuuebc6hsr5@vireshk-i7> (raw)
In-Reply-To: <CAGETcx_ggG8oDnAVaSfuHfip1ozjQpFiGs15cz8nLQnzjTiSTg@mail.gmail.com>

On 24-06-19, 15:17, Saravana Kannan wrote:
> Here's an example. This can't be done today, but can be done with this change.
> 
> In arch/arm64/boot/dts/exynos/exynos5433-bus.dtsi you have something
> like this with the following changes:
> 
>         bus_g2d_400: bus0 {
>                 compatible = "samsung,exynos-bus";
>                 clocks = <&cmu_top CLK_ACLK_G2D_400>;
>                 clock-names = "bus";
>                 operating-points-v2 = <&bus_g2d_400_opp_table>;
>                 status = "disabled";
>         };
> 
>         bus_noc2: bus9 {
>                 compatible = "samsung,exynos-bus";
>                 clocks = <&cmu_mif CLK_ACLK_BUS2_400>;
>                 clock-names = "bus";
>                 operating-points-v2 = <&bus_noc2_opp_table>;
>                 status = "disabled";
>         };

And what is the relation between these two busses ?

>         bus_g2d_400_opp_table: opp_table2 {
>                 compatible = "operating-points-v2";
>                 opp-shared;
> 
>                 opp-400000000 {
>                         opp-hz = /bits/ 64 <400000000>;
>                         opp-microvolt = <1075000>;
> +                       required-opps = <&noc2_400>;
>                 };
>                 opp-267000000 {
>                         opp-hz = /bits/ 64 <267000000>;
>                         opp-microvolt = <1000000>;
> +                       required-opps = <&noc2_200>;
>                 };
>                 opp-200000000 {
>                         opp-hz = /bits/ 64 <200000000>;
>                         opp-microvolt = <975000>;
> +                       required-opps = <&noc2_200>;
>                 };
>                 opp-160000000 {
>                         opp-hz = /bits/ 64 <160000000>;
>                         opp-microvolt = <962500>;
> +                       required-opps = <&noc2_134>;
>                 };
>                 opp-134000000 {
>                         opp-hz = /bits/ 64 <134000000>;
>                         opp-microvolt = <950000>;
> +                       required-opps = <&noc2_134>;
>                 };
>                 opp-100000000 {
>                         opp-hz = /bits/ 64 <100000000>;
>                         opp-microvolt = <937500>;
> +                       required-opps = <&noc2_100>;
>                 };
>         };
> 
>         bus_noc2_opp_table: opp_table6 {
>                 compatible = "operating-points-v2";
> 
> -               opp-400000000 {
> +               noc2_400: opp-400000000 {
>                         opp-hz = /bits/ 64 <400000000>;
>                 };
> -               opp-200000000 {
> +               noc2_200: opp-200000000 {
>                         opp-hz = /bits/ 64 <200000000>;
>                 };
> -               opp-134000000 {
> +               noc2_134: opp-134000000 {
>                         opp-hz = /bits/ 64 <134000000>;
>                 };
> -               opp-100000000 {
> +               noc2_100: opp-100000000 {
>                         opp-hz = /bits/ 64 <100000000>;
>                 };
>         };
> 
> Thanks,
> Saravana

-- 
viresh

  reply index

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-22  0:34 Saravana Kannan
2019-06-22  0:34 ` [PATCH v1 1/3] OPP: Allow required-opps even if the device doesn't have power-domains Saravana Kannan
2019-06-22  0:34 ` [PATCH v1 2/3] OPP: Add function to look up required OPP's for a given OPP Saravana Kannan
2019-06-22 11:49   ` Chanwoo Choi
2019-06-22 21:41     ` Saravana Kannan
2019-06-23  4:27       ` Chanwoo Choi
2019-06-23  6:07         ` Saravana Kannan
2019-06-22  0:34 ` [PATCH v1 3/3] PM / devfreq: Add required OPPs support to passive governor Saravana Kannan
2019-06-22 12:00   ` Chanwoo Choi
2019-06-22 21:45     ` Saravana Kannan
2019-06-24  9:43 ` [PATCH v1 0/3] Add required-opps support to devfreq passive gov Viresh Kumar
2019-06-24 22:17   ` Saravana Kannan
2019-06-25  4:10     ` Viresh Kumar [this message]
2019-06-25  5:00       ` Saravana Kannan
2019-06-25  5:22         ` Viresh Kumar
2019-06-25  5:29           ` Saravana Kannan
2019-06-26  6:32             ` Viresh Kumar
2019-06-26 18:10               ` Saravana Kannan
2019-06-28  6:49                 ` Viresh Kumar
2019-06-28 20:26                   ` Saravana Kannan
2019-07-11 23:16                     ` Saravana Kannan

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190625041054.2ceuvnuuebc6hsr5@vireshk-i7 \
    --to=viresh.kumar@linaro.org \
    --cc=cw00.choi@samsung.com \
    --cc=kernel-team@android.com \
    --cc=kyungmin.park@samsung.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-pm@vger.kernel.org \
    --cc=myungjoo.ham@samsung.com \
    --cc=nm@ti.com \
    --cc=rjw@rjwysocki.net \
    --cc=saravanak@google.com \
    --cc=sboyd@kernel.org \
    --cc=vireshk@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-PM Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-pm/0 linux-pm/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-pm linux-pm/ https://lore.kernel.org/linux-pm \
		linux-pm@vger.kernel.org linux-pm@archiver.kernel.org
	public-inbox-index linux-pm

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-pm


AGPL code for this site: git clone https://public-inbox.org/ public-inbox