From: Sylwester Nawrocki <s.nawrocki@samsung.com>
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 [thread overview]
Message-ID: <20200702163724.2218-5-s.nawrocki@samsung.com> (raw)
In-Reply-To: <20200702163724.2218-1-s.nawrocki@samsung.com>
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 <a.swigon@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
---
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(+)
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";
};
--
2.7.4
next prev parent reply other threads:[~2020-07-02 16:38 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20200702163746eucas1p2363251b3b6fb6084123cedd67fa132d5@eucas1p2.samsung.com>
2020-07-02 16:37 ` [PATCH RFC v6 0/6] Exynos: Simple QoS for exynos-bus using interconnect Sylwester Nawrocki
[not found] ` <CGME20200702163748eucas1p2cf7eab70bc072dea9a95183018b38ad3@eucas1p2.samsung.com>
2020-07-02 16:37 ` [PATCH RFC v6 1/6] dt-bindings: exynos-bus: Add documentation for interconnect properties Sylwester Nawrocki
2020-07-03 0:47 ` Chanwoo Choi
2020-07-09 21:04 ` Rob Herring
2020-07-30 12:28 ` Sylwester Nawrocki
2020-08-28 14:49 ` Sylwester Nawrocki
2020-09-09 9:07 ` Georgi Djakov
2020-09-09 14:47 ` Sylwester Nawrocki
2020-09-15 21:40 ` Georgi Djakov
2020-10-30 12:29 ` Sylwester Nawrocki
[not found] ` <CGME20200702163753eucas1p16fbd5d59d05fb8e4fdcde9df839cb71e@eucas1p1.samsung.com>
2020-07-02 16:37 ` [PATCH RFC v6 2/6] interconnect: Add generic interconnect driver for Exynos SoCs Sylwester Nawrocki
[not found] ` <CGME20200702163754eucas1p2bbe44897234a3e39dcd10b23e536a927@eucas1p2.samsung.com>
2020-07-02 16:37 ` [PATCH RFC v6 3/6] PM / devfreq: exynos-bus: Add registration of interconnect child device Sylwester Nawrocki
[not found] ` <CGME20200702163756eucas1p282c6bc5a61f8dd7b6a5d59d92e92e2f1@eucas1p2.samsung.com>
2020-07-02 16:37 ` Sylwester Nawrocki [this message]
[not found] ` <CGME20200702163758eucas1p1e18d95f3dce34df1f4334da5462a04a2@eucas1p1.samsung.com>
2020-07-02 16:37 ` [PATCH RFC v6 5/6] ARM: dts: exynos: Add interconnects to Exynos4412 mixer Sylwester Nawrocki
[not found] ` <CGME20200702163801eucas1p12db276c7ac9e244e93e4b2f3d33ba729@eucas1p1.samsung.com>
2020-07-02 16:37 ` [PATCH RFC v6 6/6] drm: exynos: mixer: Add interconnect support Sylwester Nawrocki
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