Messages in this thread | | | Subject | Re: [RFC PATCH v3 4/7] arm: dts: exynos: Add interconnect bindings for Exynos4412 | From | Georgi Djakov <> | Date | Wed, 22 Jan 2020 18:54:54 +0200 |
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Hi Artur,
Thank you for your continuous work on this.
On 12/20/19 13:56, Artur Świgoń wrote: > This patch adds the following properties to the Exynos4412 DT: > - exynos,interconnect-parent-node: to declare connections between > nodes in order to guarantee PM QoS requirements between nodes;
Is this DT property documented somewhere? I believe that there should be a patch to document it somewhere in Documentation/devicetree/bindings/ before using it.
Thanks, Georgi
> - #interconnect-cells: required by the interconnect framework. > > Note that #interconnect-cells is always zero and node IDs are not > hardcoded anywhere. > > Signed-off-by: Artur Świgoń <a.swigon@samsung.com> > --- > arch/arm/boot/dts/exynos4412-odroid-common.dtsi | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi > index 4ce3d77a6704..d9d70eacfcaf 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 { > exynos,ppmu-device = <&ppmu_dmc0_3>, <&ppmu_dmc1_3>; > vdd-supply = <&buck1_reg>; > + #interconnect-cells = <0>; > status = "okay"; > }; > > @@ -106,6 +107,8 @@ > &bus_leftbus { > exynos,ppmu-device = <&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 { > exynos,parent-bus = <&bus_leftbus>; > + exynos,interconnect-parent-node = <&bus_leftbus>; > + #interconnect-cells = <0>; > status = "okay"; > }; > >
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