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

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State Superseded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

Commit Message

Sylwester Nawrocki/Kernel \(PLT\) /SRPOL/Staff Engineer/Samsung Electronics 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(+)
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Patch

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";
 		};