[RFC,v5,4/6] ARM: dts: exynos: Add interconnect properties to Exynos4412 bus nodes
diff mbox series

Message ID 20200529163200.18031-5-s.nawrocki@samsung.com
State Superseded
Headers show
Series
  • Exynos: Simple QoS for exynos-bus using interconnect
Related show

Commit Message

Sylwester Nawrocki May 29, 2020, 4:31 p.m. UTC
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.

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>
---
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 | 5 +++++
 1 file changed, 5 insertions(+)

Comments

Chanwoo Choi May 31, 2020, 12:02 a.m. UTC | #1
Hi Sylwester,

On Sat, May 30, 2020 at 1:33 AM Sylwester Nawrocki
<s.nawrocki@samsung.com> wrote:
>
> 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.
>
> 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>
> ---
> 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 | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/arch/arm/boot/dts/exynos4412.dtsi b/arch/arm/boot/dts/exynos4412.dtsi
> index 4886894..a7496d3 100644
> --- a/arch/arm/boot/dts/exynos4412.dtsi
> +++ b/arch/arm/boot/dts/exynos4412.dtsi
> @@ -381,6 +381,7 @@
>                         clocks = <&clock CLK_DIV_DMC>;
>                         clock-names = "bus";
>                         operating-points-v2 = <&bus_dmc_opp_table>;
> +                       #interconnect-cells = <0>;
>                         status = "disabled";
>                 };
>
> @@ -450,6 +451,8 @@
>                         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 +469,8 @@
>                         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
>

Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>

Patch
diff mbox series

diff --git a/arch/arm/boot/dts/exynos4412.dtsi b/arch/arm/boot/dts/exynos4412.dtsi
index 4886894..a7496d3 100644
--- a/arch/arm/boot/dts/exynos4412.dtsi
+++ b/arch/arm/boot/dts/exynos4412.dtsi
@@ -381,6 +381,7 @@ 
 			clocks = <&clock CLK_DIV_DMC>;
 			clock-names = "bus";
 			operating-points-v2 = <&bus_dmc_opp_table>;
+			#interconnect-cells = <0>;
 			status = "disabled";
 		};
 
@@ -450,6 +451,8 @@ 
 			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 +469,8 @@ 
 			clocks = <&clock CLK_ACLK160>;
 			clock-names = "bus";
 			operating-points-v2 = <&bus_display_opp_table>;
+			samsung,interconnect-parent = <&bus_leftbus>;
+			#interconnect-cells = <0>;
 			status = "disabled";
 		};