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Thu, 2 Jul 2020 16:37:55 +0000 (GMT) From: Sylwester Nawrocki To: georgi.djakov@linaro.org, cw00.choi@samsung.com, krzk@kernel.org Cc: devicetree@vger.kernel.org, robh+dt@kernel.org, a.swigon@samsung.com, myungjoo.ham@samsung.com, inki.dae@samsung.com, sw0312.kim@samsung.com, b.zolnierkie@samsung.com, m.szyprowski@samsung.com, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-samsung-soc@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, s.nawrocki@samsung.com Subject: [PATCH RFC v6 4/6] ARM: dts: exynos: Add interconnect properties to Exynos4412 bus nodes Date: Thu, 2 Jul 2020 18:37:22 +0200 Message-Id: <20200702163724.2218-5-s.nawrocki@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200702163724.2218-1-s.nawrocki@samsung.com> MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA02SazBUYRjH591z2WNnl2O3yYPS2DKNpsRomnfSmGpMsx/7SFNqy5kldtMe l/KhCxEbtfGBVkUXk7YLNkkKtVZbI3ZMSEMpMWhSoU10dTq6fPs9z/P/v//nmXkZQvmU8mMS DCmc0aBNUtMysu7hjGsVp/gRG3olCA+cy0a4pqSKws8+jVC4zNFB4S73BxoXN9poXDhgJrHL VS3Ftjc9FH7acIbGUwUOhEtcTRJ83fFCivuOVNI4u9EhxS3vjlG4pGiM3uCtsVnzaE1/zz1a M3DcKdHcvHRIc6LWijRTtoAt9FbZ+jguKSGNM66O3CmL763uJJJveO1vfllDHEYNchPyYIBd A6PT48iEGEbJViKoDTQh2Rx+QlBzbYIWiykEg50nqT+GR6OvkDi4jOD2yB301zJbdFMiqGg2 DApaTyCBF7BRkDN8jhREBJtLQF19ISEMVOxuON/bQgpMskFw9sZ7qcAKdh08f5iHxLglcLX6 PiHs58FGQMuUQpR4w+PTQ7+txJwk61YpIbwPrFsKF5+YSNEbBe1vy+ZZBW+dtVKRF0FbUT4p GrIQ5N/tk4qFGcGAs3w+OQL6O2ZpIZlgg6GqYbXY3gjdX9xSoQ2sJ/SOe4tLeEJhXTEhthWQ m6MU1cvgq7VYIrIfHB/6Ob+OBvJLJkkzCrT8d47lv3Ms/3LLEWFFPlwqr9dxfLiBSw/htXo+ 1aAL2b1Xb0NzX63th9Ndj5q+7bIjlkFquWL08fdYJaVN4w/o7QgYQr1Asam9LVapiNMeyOCM e3cYU5M43o78GVLtowi/MLZdyeq0KVwixyVzxj9TCePhdxiZV23D0+3xhHzPRHTw2IfI1syE O8MqtnGfrCmaqg7tlw+u5GNUVfJW265Mw3JHT2JFptfB5qMPFs5YlgbGdYy8Miwr6yxWN7hK J7Vhrz3OBAR1mXzyvlboTmWkL41eu9i/a9PyUVVWkd1/XNlz5XP55MyKkM0xR7rNMb7Jvhkf w9UkH68NW0EYee0v6L6xymYDAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrGIsWRmVeSWpSXmKPExsVy+t/xe7opvP/iDLYulrO4P6+V0WLjjPWs Fte/PGe1mH/kHKvFla/v2Sym793EZjHp/gQWi/PnN7BbbHp8jdXi8q45bBafe48wWsw4v4/J Yu2Ru+wWtxtXsFm07j3CbnH4TTurxYzJL9kcBD02repk87hzbQ+bx/3u40wem5fUe/RtWcXo 8XmTXABblJ5NUX5pSapCRn5xia1StKGFkZ6hpYWekYmlnqGxeayVkamSvp1NSmpOZllqkb5d gl7GjQ0XmQvW8Vfsv7eRuYFxF08XIyeHhICJxIkXDxi7GLk4hASWMkr8fvoMyOEASkhJzG9R gqgRlvhzrYsNouYTo8TjDx9YQBJsAoYSvUf7GEFsEQEPiVOta1lBbGaBGcwSp2eZgswRFkiU mLlAECTMIqAqMXfdO3YQm1fASuLmsU5GiPnyEqs3HGAGKecUsJY4/JkXJCwEVHKsfwFUuaDE yZlPWEBKmAXUJdbPE4JYJC/RvHU28wRGwVlIqmYhVM1CUrWAkXkVo0hqaXFuem6xoV5xYm5x aV66XnJ+7iZGYJxuO/Zz8w7GSxuDDzEKcDAq8fBOOP43Tog1say4MvcQowQHs5IIr9PZ03FC vCmJlVWpRfnxRaU5qcWHGE2BPpvILCWanA9MIXkl8YamhuYWlobmxubGZhZK4rwdAgdjhATS E0tSs1NTC1KLYPqYODilGhizGNdceVzJ/NCANzkzy8d5tY5cmweDubvi59n8F0oqT2cxCK9W m6TCXOeffv7h6XSh+j+WDq5CmhoTTnG7crlu1OsWsU722ZK8+e//hxWOol+1Pn3PfrBQ9tY6 uzlBi8/ctbH6N7fG7dIqy8QHzV5H2mp0U3y1Ilj7F5758+TItKufp3QZblJiKc5INNRiLipO BABsxMos6QIAAA== X-CMS-MailID: 20200702163756eucas1p282c6bc5a61f8dd7b6a5d59d92e92e2f1 X-Msg-Generator: CA X-RootMTR: 20200702163756eucas1p282c6bc5a61f8dd7b6a5d59d92e92e2f1 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20200702163756eucas1p282c6bc5a61f8dd7b6a5d59d92e92e2f1 References: <20200702163724.2218-1-s.nawrocki@samsung.com> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org This patch adds the following properties for Exynos4412 interconnect bus nodes: - samsung,interconnect-parent: to declare connections between nodes in order to guarantee PM QoS requirements between nodes, - #interconnect-cells: required by the interconnect framework, - bus-width: the bus width in bits, required to properly derive minimum bus clock frequency from requested bandwidth for each bus. Note that #interconnect-cells is always zero and node IDs are not hardcoded anywhere. Signed-off-by: Artur Świgoń Signed-off-by: Sylwester Nawrocki Reviewed-by: Chanwoo Choi --- Changes for v6: - added bus-width property in bus_dmc node. Changes for v5: - adjust to renamed exynos,interconnect-parent-node property, - add properties in common exynos4412.dtsi file rather than in Odroid specific odroid4412-odroid-common.dtsi. --- arch/arm/boot/dts/exynos4412.dtsi | 6 ++++++ 1 file changed, 6 insertions(+) -- 2.7.4 diff --git a/arch/arm/boot/dts/exynos4412.dtsi b/arch/arm/boot/dts/exynos4412.dtsi index 4886894..24529d4 100644 --- a/arch/arm/boot/dts/exynos4412.dtsi +++ b/arch/arm/boot/dts/exynos4412.dtsi @@ -381,6 +381,8 @@ clocks = <&clock CLK_DIV_DMC>; clock-names = "bus"; operating-points-v2 = <&bus_dmc_opp_table>; + bus-width = <4>; + #interconnect-cells = <0>; status = "disabled"; }; @@ -450,6 +452,8 @@ clocks = <&clock CLK_DIV_GDL>; clock-names = "bus"; operating-points-v2 = <&bus_leftbus_opp_table>; + samsung,interconnect-parent = <&bus_dmc>; + #interconnect-cells = <0>; status = "disabled"; }; @@ -466,6 +470,8 @@ clocks = <&clock CLK_ACLK160>; clock-names = "bus"; operating-points-v2 = <&bus_display_opp_table>; + samsung,interconnect-parent = <&bus_leftbus>; + #interconnect-cells = <0>; status = "disabled"; };