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Mon, 16 Dec 2019 09:48:33 +0900 (KST) Received: from [10.113.221.102] (unknown [10.113.221.102]) by epsmtip2.samsung.com (KnoxPortal) with ESMTPA id 20191216004832epsmtip20cbc07c0bc599c8bbc98b5d37a351388~gs5Lay3th2795527955epsmtip2z; Mon, 16 Dec 2019 00:48:32 +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: Date: Mon, 16 Dec 2019 09:55:08 +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+NgFrrOJsWRmVeSWpSXmKPExsWy7bCmvm7ilW+xBjtOaljcn9fKaLFxxnpW i/lHzrFaXPn6ns1i+t5NbBaT7k9gsTh/fgO7xYq7H1ktNj2+xmpxedccNovPvUcYLWac38dk sfbIXXaL240r2CxmTH7J5sDvsWlVJ5vHnWt72Dzudx9n8ti8pN5j47sdTB59W1YxenzeJBfA HpVtk5GamJJapJCal5yfkpmXbqvkHRzvHG9qZmCoa2hpYa6kkJeYm2qr5OIToOuWmQN0t5JC WWJOKVAoILG4WEnfzqYov7QkVSEjv7jEVim1ICWnwLJArzgxt7g0L10vOT/XytDAwMgUqDAh O+Pem/NsBVPkKu4t287ewLhYvIuRk0NCwERixYZHLF2MXBxCAjsYJb6dmcsI4XxilFjVdZoR pEpI4BujRMfhSpiOP4v/MkMU7WWUWHfnAiuE855Ron36E2aQKmGBdInrnZ+YQBIiAv8ZJU4v WwlWxSxwjFFi752fLCBVbAJaEvtf3GADsfkFFCWu/ngMto9XwE5i28tf7CA2i4CqxMmPJ8Cm igqESZzc1gJVIyhxcuYToDkcHJwClhKds/VBwswC4hK3nsxngrDlJZq3zgY7VUJgH7vErf/H 2CB+cJFYPnkfE4QtLPHq+BZ2CFtK4mV/G5RdLbHy5BE2iOYORokt+0H+BEkYS+xfOpkJZDGz gKbE+l36EGFFiZ2/5zJCLOaTePe1hxWkREKAV6KjTQiiRFni8oO7UGslJRa3d7JNYFSaheSb WUhemIXkhVkIyxYwsqxiFEstKM5NTy02LDBFju5NjOBErWW5g/HYOZ9DjAIcjEo8vA7Z32KF WBPLiitzDzFKcDArifCman+OFeJNSaysSi3Kjy8qzUktPsRoCgzsicxSosn5wCySVxJvaGpk bGxsYWJoZmpoqCTOy/HjYqyQQHpiSWp2ampBahFMHxMHp1QDY7oVW/ESuamLD1W8s1Wz+9mb WOn1wvDhzbN26vFuv83UhXuirzdvdnWvvLGtaoHqxIW+VS82FJ3L+LNQvdpNhMXPLmJuWCbj xXVrZPuqbsa8N090z9Q3ub3yxtK4m4c+79JY4r5zeXlqydHKJTc+rk1hrb+4TJQj0bX1+P6W HS36JtN+nj56RomlOCPRUIu5qDgRAMnSFTfqAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrEIsWRmVeSWpSXmKPExsWy7bCSvG7ilW+xBv0X2C3uz2tltNg4Yz2r xfwj51gtrnx9z2Yxfe8mNotJ9yewWJw/v4HdYsXdj6wWmx5fY7W4vGsOm8Xn3iOMFjPO72Oy WHvkLrvF7cYVbBYzJr9kc+D32LSqk83jzrU9bB73u48zeWxeUu+x8d0OJo++LasYPT5vkgtg j+KySUnNySxLLdK3S+DKuPfmPFvBFLmKe8u2szcwLhbvYuTkkBAwkfiz+C9zFyMXh5DAbkaJ Z2+/skEkJCWmXTwKlOAAsoUlDh8uhqh5yyhxZmoLM0iNsEC6xPXOT0wgCRGB/4wSD9uOMYI4 zALHGCU+rljPCjd2wdGHTCAtbAJaEvtf3ABbwS+gKHH1x2NGEJtXwE5i28tf7CA2i4CqxMmP J8BWiAqESexc8pgJokZQ4uTMJywgJ3EKWEp0ztYHCTMLqEv8mXeJGcIWl7j1ZD4ThC0v0bx1 NvMERuFZSLpnIWmZhaRlFpKWBYwsqxglUwuKc9Nziw0LDPNSy/WKE3OLS/PS9ZLzczcxgmNW S3MH4+Ul8YcYBTgYlXh4HbK/xQqxJpYVV+YeYpTgYFYS4U3V/hwrxJuSWFmVWpQfX1Sak1p8 iFGag0VJnPdp3rFIIYH0xJLU7NTUgtQimCwTB6dUA6PTy5WLC+Pad8o6vjxarV8dEdJ2Y8fC WuOpE9gZb664ZHDC71f5hs9rb9TNKo+YbKuy6XWm9I4/3h3n+AvPdXh8KuXQ/aoxmzn2j4T4 62eii6+6q/ttf/x8VUjozbcXzk0/lah/hqPjnI9hiPkjxon58SURysm7Fl/SFZrDYrRXloll 783lCiZKLMUZiYZazEXFiQDggDtC1QIAAA== X-CMS-MailID: 20191216004833epcas1p1b594c5fdd00b683c18babd188fb563c3 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 Hi, 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 patch, I'm not sure to use 'parent' property for this driver. If possible, we better to use the standard way like OF graph in order to make the tree between buses. Except for making the connection between the buses with 'parent', 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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[10.113.221.102]) by epsmtip2.samsung.com (KnoxPortal) with ESMTPA id 20191216004832epsmtip20cbc07c0bc599c8bbc98b5d37a351388~gs5Lay3th2795527955epsmtip2z; Mon, 16 Dec 2019 00:48:32 +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: Date: Mon, 16 Dec 2019 09:55:08 +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+NgFrrOJsWRmVeSWpSXmKPExsWy7bCmvm7ilW+xBjtOaljcn9fKaLFxxnpW i/lHzrFaXPn6ns1i+t5NbBaT7k9gsTh/fgO7xYq7H1ktNj2+xmpxedccNovPvUcYLWac38dk 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