From: "Artur Świgoń" <a.swigon@samsung.com>
To: Chanwoo Choi <chanwoo@kernel.org>
Cc: Chanwoo Choi <cw00.choi@samsung.com>,
devicetree <devicetree@vger.kernel.org>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
linux-samsung-soc <linux-samsung-soc@vger.kernel.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
Linux PM list <linux-pm@vger.kernel.org>,
dri-devel <dri-devel@lists.freedesktop.org>,
MyungJoo Ham <myungjoo.ham@samsung.com>,
inki.dae@samsung.com, Seung-Woo Kim <sw0312.kim@samsung.com>,
georgi.djakov@linaro.org,
Leonard Crestez <leonard.crestez@nxp.com>,
Marek Szyprowski <m.szyprowski@samsung.com>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
Krzysztof Kozlowski <krzk@kernel.org>
Subject: Re: [RFC PATCH v2 08/11] arm: dts: exynos: Add parents and #interconnect-cells to Exynos4412
Date: Wed, 18 Dec 2019 11:41:55 +0100 [thread overview]
Message-ID: <803d0920cf24eb9b4c87bb1d5e894cc3c9c88e72.camel@samsung.com> (raw)
In-Reply-To: <CAGTfZH1=gk1jm4wmX+xMZfkrPR_UDumaDEfmddrpbig4VnN8FQ@mail.gmail.com>
On Wed, 2019-12-18 at 19:29 +0900, Chanwoo Choi wrote:
> Hi
>
> 2019년 12월 18일 (수) 오후 7:18, Artur Świgoń <a.swigon@samsung.com>님이 작성:
> >
> > Hi,
> >
> > On Mon, 2019-12-16 at 11:59 +0900, Chanwoo Choi wrote:
> > > Hi,
> > >
> > > On 12/16/19 9:51 AM, Chanwoo Choi wrote:
> > > > On 9/19/19 11:22 PM, Artur Świgoń wrote:
> > > > > From: Artur Świgoń <a.swigon@partner.samsung.com>
> > > > >
> > > > > This patch adds two fields to the Exynos4412 DTS:
> > > > > - parent: to declare connections between nodes that are not in a
> > > > > parent-child relation in devfreq;
> > > > > - #interconnect-cells: required by the interconnect framework.
> > > > >
> > > > > Please note that #interconnect-cells is always zero and node IDs are not
> > > > > hardcoded anywhere. The above-mentioned parent-child relation in devfreq
> > > > > means that there is a shared power line ('devfreq' property). The 'parent'
> > > > > property only signifies an interconnect connection.
> > > > >
> > > > > Signed-off-by: Artur Świgoń <a.swigon@partner.samsung.com>
> > > > > ---
> > > > > arch/arm/boot/dts/exynos4412-odroid-common.dtsi | 1 +
> > > > > arch/arm/boot/dts/exynos4412.dtsi | 9 +++++++++
> > > > > 2 files changed, 10 insertions(+)
> > > > >
> > > > > diff --git a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> > > > > index ea55f377d17c..bdd61ae86103 100644
> > > > > --- a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> > > > > +++ b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> > > > > @@ -106,6 +106,7 @@
> > > > > &bus_leftbus {
> > > > > devfreq-events = <&ppmu_leftbus_3>, <&ppmu_rightbus_3>;
> > > > > vdd-supply = <&buck3_reg>;
> > > > > + parent = <&bus_dmc>;
> > > >
> > > > As I mentioned on other reply,
> > > > I'm not sure to use the specific 'parent' property to make
> > > > the connection between buses. If possible, you better to
> > > > use the standard way like OF graph. Except for making
> > > > the connection between buses by 'parent' property,
> > > > looks good to me.
> > >
> > > I tried to think it continuously. I withdraw the my opinion
> > > using OF graph. If you make the property name like the following
> > > example, it is possible for exynos.
> > > - exynos,interconnect-parent-node = <&bus_dmc>; or other proper name.
> > >
> > > Regardless of existing 'devfreq' property, I think you better to
> > > make the connection between buses for only interconnect as following
> > > example: This make it possible user can draw the correct tree by tracking
> > > the 'exynos,interconnect-parent-node' value.
> >
> > OK, for v3 I will add 'exynos,interconnect-parent-node' to bus_dmc,
> > bus_leftbus and bus_display as you suggested below and change the code
> > so that the 'devfreq' (or the upcoming 'exynos,parent-bus') property is
> > not taken into account.
>
> I'd like you to make the v3 based on my patches[1]
> [1] https://protect2.fireeye.com/url?k=3fbd62a4-6276e59a-3fbce9eb-0cc47a31309a-5329151b98fc2653&u=https://lkml.org/lkml/2019/12/17/21
> - [PATCH 0/9] PM / devfreq: Remove deprecated 'devfreq' and
> 'devfreq-events' properties
>
> I uploaded the patches to devfreq-testing branch[2]
> [2] https://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/linux.git/log/?h=devfreq-testing
OK.
>
> >
> > > diff --git a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> > > index ea55f377d17c..53f87f46e161 100644
> > > --- a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> > > +++ b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> > > @@ -90,6 +90,7 @@
> > > &bus_dmc {
> > > devfreq-events = <&ppmu_dmc0_3>, <&ppmu_dmc1_3>;
> > > vdd-supply = <&buck1_reg>;
> > > + #interconnect-cells = <0>;
> > > status = "okay";
> > > };
> > >
> > > @@ -106,6 +107,8 @@
> > > &bus_leftbus {
> > > devfreq-events = <&ppmu_leftbus_3>, <&ppmu_rightbus_3>;
> > > vdd-supply = <&buck3_reg>;
> > > + exynos,interconnect-parent-node = <&bus_dmc>;
> > > + #interconnect-cells = <0>;
> > > status = "okay";
> > > };
> > >
> > > @@ -116,6 +119,8 @@
> > >
> > > &bus_display {
> > > devfreq = <&bus_leftbus>;
> > > + exynos,interconnect-parent-node = <&bus_leftbus>;
> > > + #interconnect-cells = <0>;
> > > status = "okay";
> > > };
> > >
> > >
> > > >
> > > >
> > > > > status = "okay";
> > > > > };
> > > > >
> > > > > diff --git a/arch/arm/boot/dts/exynos4412.dtsi b/arch/arm/boot/dts/exynos4412.dtsi
> > > > > index d20db2dfe8e2..a70a671acacd 100644
> > > > > --- a/arch/arm/boot/dts/exynos4412.dtsi
> > > > > +++ b/arch/arm/boot/dts/exynos4412.dtsi
> > > > > @@ -390,6 +390,7 @@
> > > > > clocks = <&clock CLK_DIV_DMC>;
> > > > > clock-names = "bus";
> > > > > operating-points-v2 = <&bus_dmc_opp_table>;
> > > > > + #interconnect-cells = <0>;
> > > > > status = "disabled";
> > > > > };
> > > > >
> > > > > @@ -398,6 +399,7 @@
> > > > > clocks = <&clock CLK_DIV_ACP>;
> > > > > clock-names = "bus";
> > > > > operating-points-v2 = <&bus_acp_opp_table>;
> > > > > + #interconnect-cells = <0>;
> > > > > status = "disabled";
> > > > > };
> > > > >
> > > > > @@ -406,6 +408,7 @@
> > > > > clocks = <&clock CLK_DIV_C2C>;
> > > > > clock-names = "bus";
> > > > > operating-points-v2 = <&bus_dmc_opp_table>;
> > > > > + #interconnect-cells = <0>;
> > > > > status = "disabled";
> > > > > };
> > > > >
> > > > > @@ -459,6 +462,7 @@
> > > > > clocks = <&clock CLK_DIV_GDL>;
> > > > > clock-names = "bus";
> > > > > operating-points-v2 = <&bus_leftbus_opp_table>;
> > > > > + #interconnect-cells = <0>;
> > > > > status = "disabled";
> > > > > };
> > > > >
> > > > > @@ -467,6 +471,7 @@
> > > > > clocks = <&clock CLK_DIV_GDR>;
> > > > > clock-names = "bus";
> > > > > operating-points-v2 = <&bus_leftbus_opp_table>;
> > > > > + #interconnect-cells = <0>;
> > > > > status = "disabled";
> > > > > };
> > > > >
> > > > > @@ -475,6 +480,7 @@
> > > > > clocks = <&clock CLK_ACLK160>;
> > > > > clock-names = "bus";
> > > > > operating-points-v2 = <&bus_display_opp_table>;
> > > > > + #interconnect-cells = <0>;
> > > > > status = "disabled";
> > > > > };
> > > > >
> > > > > @@ -483,6 +489,7 @@
> > > > > clocks = <&clock CLK_ACLK133>;
> > > > > clock-names = "bus";
> > > > > operating-points-v2 = <&bus_fsys_opp_table>;
> > > > > + #interconnect-cells = <0>;
> > > > > status = "disabled";
> > > > > };
> > > > >
> > > > > @@ -491,6 +498,7 @@
> > > > > clocks = <&clock CLK_ACLK100>;
> > > > > clock-names = "bus";
> > > > > operating-points-v2 = <&bus_peri_opp_table>;
> > > > > + #interconnect-cells = <0>;
> > > > > status = "disabled";
> > > > > };
> > > > >
> > > > > @@ -499,6 +507,7 @@
> > > > > clocks = <&clock CLK_SCLK_MFC>;
> > > > > clock-names = "bus";
> > > > > operating-points-v2 = <&bus_leftbus_opp_table>;
> > > > > + #interconnect-cells = <0>;
> > > > > status = "disabled";
> > > > > };
> > > > >
> > > > >
--
Artur Świgoń
Samsung R&D Institute Poland
Samsung Electronics
next prev parent reply other threads:[~2019-12-18 10:42 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20190919142321eucas1p164c2591ad402427cb71fd00c348a29ec@eucas1p1.samsung.com>
2019-09-19 14:22 ` [RFC PATCH v2 00/11] Simple QoS for exynos-bus driver using interconnect Artur Świgoń
[not found] ` <CGME20190919142322eucas1p24bc477ee6e1bcd65546c305d55af097d@eucas1p2.samsung.com>
2019-09-19 14:22 ` [RFC PATCH v2 01/11] devfreq: exynos-bus: Extract exynos_bus_profile_init() Artur Świgoń
2019-09-20 2:15 ` Chanwoo Choi
2019-09-25 5:44 ` Artur Świgoń
2019-09-25 6:37 ` Chanwoo Choi
2019-09-25 6:41 ` Artur Świgoń
[not found] ` <CGME20190919142322eucas1p1949ad95468af26698c4c5addc060ce00@eucas1p1.samsung.com>
2019-09-19 14:22 ` [RFC PATCH v2 02/11] devfreq: exynos-bus: Extract exynos_bus_profile_init_passive() Artur Świgoń
[not found] ` <CGME20190919142323eucas1p2fc73a765389432f880fa28945fd28975@eucas1p2.samsung.com>
2019-09-19 14:22 ` [RFC PATCH v2 03/11] devfreq: exynos-bus: Change goto-based logic to if-else logic Artur Świgoń
[not found] ` <CGME20190919142324eucas1p1638cec2aafbfcaf03cfdfa7d0189143a@eucas1p1.samsung.com>
2019-09-19 14:22 ` [RFC PATCH v2 04/11] devfreq: exynos-bus: Clean up code Artur Świgoń
2019-09-20 2:22 ` Chanwoo Choi
2019-10-03 8:10 ` Artur Świgoń
[not found] ` <CGME20190919142325eucas1p28102446c22b1e1c61aae0bad46d079b0@eucas1p2.samsung.com>
2019-09-19 14:22 ` [RFC PATCH v2 05/11] interconnect: Export of_icc_get_from_provider() Artur Świgoń
2019-12-16 0:57 ` Chanwoo Choi
[not found] ` <CGME20190919142326eucas1p204819014fe85716b47e2de4af9102cd5@eucas1p2.samsung.com>
2019-09-19 14:22 ` [RFC PATCH v2 06/11] interconnect: Relax requirement in of_icc_get_from_provider() Artur Świgoń
[not found] ` <CGME20190919142327eucas1p183470eede07b50c1e3acda58f2af1eba@eucas1p1.samsung.com>
2019-09-19 14:22 ` [RFC PATCH v2 07/11] interconnect: Relax condition in apply_constraints() Artur Świgoń
[not found] ` <CGME20190919142329eucas1p299762f99dd55a5d625633ceec84219f9@eucas1p2.samsung.com>
2019-09-19 14:22 ` [RFC PATCH v2 08/11] arm: dts: exynos: Add parents and #interconnect-cells to Exynos4412 Artur Świgoń
2019-12-16 0:51 ` Chanwoo Choi
2019-12-16 2:59 ` Chanwoo Choi
2019-12-18 10:17 ` Artur Świgoń
2019-12-18 10:29 ` Chanwoo Choi
2019-12-18 10:41 ` Artur Świgoń [this message]
2019-12-16 0:55 ` Chanwoo Choi
2019-12-16 0:57 ` Chanwoo Choi
[not found] ` <CGME20190919142329eucas1p2e53992eab9ec6b404f716f955b3c228e@eucas1p2.samsung.com>
2019-09-19 14:22 ` [RFC PATCH v2 09/11] devfreq: exynos-bus: Add interconnect functionality to exynos-bus Artur Świgoń
2019-09-25 7:03 ` Chanwoo Choi
2019-09-25 7:12 ` Artur Świgoń
2019-12-02 17:05 ` Artur Świgoń
2019-12-05 2:36 ` Chanwoo Choi
2019-12-16 0:44 ` Chanwoo Choi
2019-12-18 10:18 ` Artur Świgoń
2019-12-18 10:39 ` Chanwoo Choi
2019-12-18 10:48 ` Artur Świgoń
2019-12-18 11:08 ` Chanwoo Choi
[not found] ` <CGME20190919142330eucas1p1eceae78b148a03f2af71657b7cdd6694@eucas1p1.samsung.com>
2019-09-19 14:22 ` [RFC PATCH v2 10/11] arm: dts: exynos: Add interconnects to Exynos4412 mixer Artur Świgoń
[not found] ` <CGME20190919142331eucas1p2107a7cb9ce8b3817ed171c21a8ad5b00@eucas1p2.samsung.com>
2019-09-19 14:22 ` [RFC PATCH v2 11/11] drm: exynos: mixer: Add interconnect support Artur Świgoń
2019-09-20 1:07 ` [RFC PATCH v2 00/11] Simple QoS for exynos-bus driver using interconnect Chanwoo Choi
2019-09-20 2:14 ` Chanwoo Choi
2019-09-25 5:47 ` Artur Świgoń
2019-09-25 6:12 ` Chanwoo Choi
2019-09-25 6:37 ` Artur Świgoń
2019-09-25 6:48 ` Chanwoo Choi
Reply instructions:
You may reply publicly 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=803d0920cf24eb9b4c87bb1d5e894cc3c9c88e72.camel@samsung.com \
--to=a.swigon@samsung.com \
--cc=b.zolnierkie@samsung.com \
--cc=chanwoo@kernel.org \
--cc=cw00.choi@samsung.com \
--cc=devicetree@vger.kernel.org \
--cc=dri-devel@lists.freedesktop.org \
--cc=georgi.djakov@linaro.org \
--cc=inki.dae@samsung.com \
--cc=krzk@kernel.org \
--cc=leonard.crestez@nxp.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=linux-samsung-soc@vger.kernel.org \
--cc=m.szyprowski@samsung.com \
--cc=myungjoo.ham@samsung.com \
--cc=sw0312.kim@samsung.com \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).