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