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Mon, 16 Dec 2019 09:45:22 +0900 (KST) Received: from [10.113.221.102] (unknown [10.113.221.102]) by epsmtip2.samsung.com (KnoxPortal) with ESMTPA id 20191216004522epsmtip2a349e34b2a186331be05484d1c596d08~gs2aHWWc12795527955epsmtip2n; Mon, 16 Dec 2019 00:45:22 +0000 (GMT) Subject: Re: [RFC PATCH v2 08/11] arm: dts: exynos: Add parents and #interconnect-cells to Exynos4412 To: =?UTF-8?B?QXJ0dXIgxZp3aWdvxYQ=?= , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, dri-devel@lists.freedesktop.org Cc: myungjoo.ham@samsung.com, inki.dae@samsung.com, sw0312.kim@samsung.com, georgi.djakov@linaro.org, leonard.crestez@nxp.com, m.szyprowski@samsung.com, b.zolnierkie@samsung.com, krzk@kernel.org From: Chanwoo Choi Organization: Samsung Electronics Message-ID: <693e250d-9656-df67-9685-188020b43542@samsung.com> Date: Mon, 16 Dec 2019 09:51:58 +0900 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:59.0) Gecko/20100101 Thunderbird/59.0 MIME-Version: 1.0 In-Reply-To: <20190919142236.4071-9-a.swigon@samsung.com> Content-Language: en-US Content-Transfer-Encoding: 8bit X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrGJsWRmVeSWpSXmKPExsWy7bCmvu7iy99iDfZe0LC4P6+V0WLjjPWs FvOPnGO1uPL1PZvF9L2b2Cwm3Z/AYnH+/AZ2ixV3P7JabHp8jdXi8q45bBafe48wWsw4v4/J Yu2Ru+wWtxtXsFnMmPySzYHfY9OqTjaPO9f2sHnc7z7O5LF5Sb3Hxnc7mDz6tqxi9Pi8SS6A PSrbJiM1MSW1SCE1Lzk/JTMv3VbJOzjeOd7UzMBQ19DSwlxJIS8xN9VWycUnQNctMwfobiWF ssScUqBQQGJxsZK+nU1RfmlJqkJGfnGJrVJqQUpOgWWBXnFibnFpXrpecn6ulaGBgZEpUGFC dsaqyfNYCvrkKmbMmcbWwLhQvIuRk0NCwERi2vf/bF2MXBxCAjsYJd71vWEGSQgJfGKUmN4f BpH4xihxp/07M0xH/7o2RojEXkaJrgmtUM57RonzXx6zgVQJC6RLXO/8xASSEBH4zyhxetlK VhCHWeAYo8TeOz9ZQKrYBLQk9r+4AdbBL6AocfXHY0YQm1fATuLtvadMIDaLgKrEp7NXweKi AmESJ7e1QNUISpyc+QRoDgcHp4ClROdsfZAws4C4xK0n85kgbHmJ5q2zoc7exS4xaZ0qhO0i 8WdDLzuELSzx6vgWKFtK4mV/G5RdLbHy5BFwwEgIdDBKbNl/gRUiYSyxf+lkJpC9zAKaEut3 6UOEFSV2/p7LCLGXT+Ld1x5WkBIJAV6JjjYhiBJlicsP7jJB2JISi9s72SYwKs1C8swsJB/M QvLBLIRlCxhZVjGKpRYU56anFhsWmCDH9iZGcJrWstjBuOeczyFGAQ5GJR7eFxnfYoVYE8uK K3MPMUpwMCuJ8KZqf44V4k1JrKxKLcqPLyrNSS0+xGgKDOuJzFKiyfnAHJJXEm9oamRsbGxh YmhmamioJM7L8eNirJBAemJJanZqakFqEUwfEwenVANjbBfLzxqn93mu+0qKTX8UWjoLZ7/O dekWjwi+U+qpytI+wXL2zXPzGbZfE/4Rl2g1Z/UlWcXpLRt3qi8OzBD+1swyI8p83Y7opp6b K49b5SdX3Sq8/uuN68T59UdK/23ZHvLg2LkP1XVB0atn1antT+MK+Vq4WJcr7bRJm9Me6T2P naIvvAlQYinOSDTUYi4qTgQAXewU4OkDAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrEIsWRmVeSWpSXmKPExsWy7bCSvO6iy99iDZo+aVncn9fKaLFxxnpW i/lHzrFaXPn6ns1i+t5NbBaT7k9gsTh/fgO7xYq7H1ktNj2+xmpxedccNovPvUcYLWac38dk sfbIXXaL240r2CxmTH7J5sDvsWlVJ5vHnWt72Dzudx9n8ti8pN5j47sdTB59W1YxenzeJBfA HsVlk5Kak1mWWqRvl8CVsWryPJaCPrmKGXOmsTUwLhTvYuTkkBAwkehf18bYxcjFISSwm1Hi ypG5LBAJSYlpF48ydzFyANnCEocPF0PUvGWUmNHbwgpSIyyQLnG98xMTSEJE4D+jxMO2Y2CT mAWOMUp8XLGeFW7sgqMPmUBa2AS0JPa/uMEGYvMLKEpc/fGYEcTmFbCTeHvvKVgNi4CqxKez V8HiogJhEjuXPGaCqBGUODnzCQvISZwClhKds/VBwswC6hJ/5l1ihrDFJW49mc8EYctLNG+d zTyBUXgWku5ZSFpmIWmZhaRlASPLKkbJ1ILi3PTcYsMCw7zUcr3ixNzi0rx0veT83E2M4JjV 0tzBeHlJ/CFGAQ5GJR5eh+xvsUKsiWXFlbmHGCU4mJVEeFO1P8cK8aYkVlalFuXHF5XmpBYf YpTmYFES532adyxSSCA9sSQ1OzW1ILUIJsvEwSnVwBj76rf0OfvNDTY1mfliR3v2OvZpVap/ t+Q58FRp2wzGm6sC0jt/zpeUZwx/mz1jf9PK7d69e7R8fxsVGH8Xv70nNeD4jCs9O5IlXh3+ FONhE8Rz89xV+Yld4imrir30TJcskbt7o2OFE98udVlduRCD3woCT329tB7ecLx40d+r3Hlq XF/+dCWW4oxEQy3mouJEAE1MdK/VAgAA X-CMS-MailID: 20191216004522epcas1p3dd06bfb24212c2fee558e7a7a23cf65c X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-Sendblock-Type: SVC_REQ_APPROVE CMS-TYPE: 101P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20190919142329eucas1p299762f99dd55a5d625633ceec84219f9 References: <20190919142236.4071-1-a.swigon@samsung.com> <20190919142236.4071-9-a.swigon@samsung.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 9/19/19 11:22 PM, Artur Świgoń wrote: > From: Artur Świgoń > > 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 > --- > 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. > 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>; > 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20191216004522epsmtrp195288207fd38caf8dc6ee3651a632978~gs2aZcB2Y2107121071epsmtrp19; Mon, 16 Dec 2019 00:45:22 +0000 (GMT) X-AuditID: b6c32a38-257ff7000001bb93-52-5df6d3a38a79 Received: from epsmtip2.samsung.com ( [182.195.34.31]) by epsmgms1p1new.samsung.com (Symantec Messaging Gateway) with SMTP id 81.C8.10238.2A3D6FD5; Mon, 16 Dec 2019 09:45:22 +0900 (KST) Received: from [10.113.221.102] (unknown [10.113.221.102]) by epsmtip2.samsung.com (KnoxPortal) with ESMTPA id 20191216004522epsmtip2a349e34b2a186331be05484d1c596d08~gs2aHWWc12795527955epsmtip2n; Mon, 16 Dec 2019 00:45:22 +0000 (GMT) Subject: Re: [RFC PATCH v2 08/11] arm: dts: exynos: Add parents and #interconnect-cells to Exynos4412 To: =?UTF-8?B?QXJ0dXIgxZp3aWdvxYQ=?= , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, dri-devel@lists.freedesktop.org From: Chanwoo Choi Organization: Samsung Electronics Message-ID: <693e250d-9656-df67-9685-188020b43542@samsung.com> Date: Mon, 16 Dec 2019 09:51:58 +0900 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:59.0) Gecko/20100101 Thunderbird/59.0 MIME-Version: 1.0 In-Reply-To: <20190919142236.4071-9-a.swigon@samsung.com> Content-Language: en-US X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrGJsWRmVeSWpSXmKPExsWy7bCmvu7iy99iDfZe0LC4P6+V0WLjjPWs FvOPnGO1uPL1PZvF9L2b2Cwm3Z/AYnH+/AZ2ixV3P7JabHp8jdXi8q45bBafe48wWsw4v4/J Yu2Ru+wWtxtXsFnMmPySzYHfY9OqTjaPO9f2sHnc7z7O5LF5Sb3Hxnc7mDz6tqxi9Pi8SS6A PSrbJiM1MSW1SCE1Lzk/JTMv3VbJOzjeOd7UzMBQ19DSwlxJIS8xN9VWycUnQNctMwfobiWF ssScUqBQQGJxsZK+nU1RfmlJqkJGfnGJrVJqQUpOgWWBXnFibnFpXrpecn6ulaGBgZEpUGFC dsaqyfNYCvrkKmbMmcbWwLhQvIuRk0NCwERi2vf/bF2MXBxCAjsYJd71vWEGSQgJfGKUmN4f BpH4xihxp/07M0xH/7o2RojEXkaJrgmtUM57RonzXx6zgVQJC6RLXO/8xASSEBH4zyhxetlK VhCHWeAYo8TeOz9ZQKrYBLQk9r+4AdbBL6AocfXHY0YQm1fATuLtvadMIDaLgKrEp7NXweKi AmESJ7e1QNUISpyc+QRoDgcHp4ClROdsfZAws4C4xK0n85kgbHmJ5q2zoc7exS4xaZ0qhO0i 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