linux-kernel - [RFC PATCH v2 08/11] arm: dts: exynos: Add parents and #interconnect-cells to Exynos4412

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Date:   Thu, 19 Sep 2019 16:22:33 +0200
From:   Artur Świgoń <a.swigon@...sung.com>
To:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org, dri-devel@...ts.freedesktop.org
Cc:     Artur Świgoń <a.swigon@...tner.samsung.com>,
        cw00.choi@...sung.com, myungjoo.ham@...sung.com,
        inki.dae@...sung.com, sw0312.kim@...sung.com,
        georgi.djakov@...aro.org, leonard.crestez@....com,
        m.szyprowski@...sung.com, b.zolnierkie@...sung.com, krzk@...nel.org
Subject: [RFC PATCH v2 08/11] arm: dts: exynos: Add parents and
 #interconnect-cells to Exynos4412

From: Artur Świgoń <a.swigon@...tner.samsung.com>

This patch adds two fields to the Exynos4412 DTS:
  - parent: to declare connections between nodes that are not in a
    parent-child relation in devfreq;
  - #interconnect-cells: required by the interconnect framework.

Please note that #interconnect-cells is always zero and node IDs are not
hardcoded anywhere. The above-mentioned parent-child relation in devfreq
means that there is a shared power line ('devfreq' property). The 'parent'
property only signifies an interconnect connection.

Signed-off-by: Artur Świgoń <a.swigon@...tner.samsung.com>
---
 arch/arm/boot/dts/exynos4412-odroid-common.dtsi | 1 +
 arch/arm/boot/dts/exynos4412.dtsi               | 9 +++++++++
 2 files changed, 10 insertions(+)

diff --git a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
index ea55f377d17c..bdd61ae86103 100644
--- a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
+++ b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
@@ -106,6 +106,7 @@
 &bus_leftbus {
 	devfreq-events = <&ppmu_leftbus_3>, <&ppmu_rightbus_3>;
 	vdd-supply = <&buck3_reg>;
+	parent = <&bus_dmc>;
 	status = "okay";
 };
 
diff --git a/arch/arm/boot/dts/exynos4412.dtsi b/arch/arm/boot/dts/exynos4412.dtsi
index d20db2dfe8e2..a70a671acacd 100644
--- a/arch/arm/boot/dts/exynos4412.dtsi
+++ b/arch/arm/boot/dts/exynos4412.dtsi
@@ -390,6 +390,7 @@
 			clocks = <&clock CLK_DIV_DMC>;
 			clock-names = "bus";
 			operating-points-v2 = <&bus_dmc_opp_table>;
+			#interconnect-cells = <0>;
 			status = "disabled";
 		};
 
@@ -398,6 +399,7 @@
 			clocks = <&clock CLK_DIV_ACP>;
 			clock-names = "bus";
 			operating-points-v2 = <&bus_acp_opp_table>;
+			#interconnect-cells = <0>;
 			status = "disabled";
 		};
 
@@ -406,6 +408,7 @@
 			clocks = <&clock CLK_DIV_C2C>;
 			clock-names = "bus";
 			operating-points-v2 = <&bus_dmc_opp_table>;
+			#interconnect-cells = <0>;
 			status = "disabled";
 		};
 
@@ -459,6 +462,7 @@
 			clocks = <&clock CLK_DIV_GDL>;
 			clock-names = "bus";
 			operating-points-v2 = <&bus_leftbus_opp_table>;
+			#interconnect-cells = <0>;
 			status = "disabled";
 		};
 
@@ -467,6 +471,7 @@
 			clocks = <&clock CLK_DIV_GDR>;
 			clock-names = "bus";
 			operating-points-v2 = <&bus_leftbus_opp_table>;
+			#interconnect-cells = <0>;
 			status = "disabled";
 		};
 
@@ -475,6 +480,7 @@
 			clocks = <&clock CLK_ACLK160>;
 			clock-names = "bus";
 			operating-points-v2 = <&bus_display_opp_table>;
+			#interconnect-cells = <0>;
 			status = "disabled";
 		};
 
@@ -483,6 +489,7 @@
 			clocks = <&clock CLK_ACLK133>;
 			clock-names = "bus";
 			operating-points-v2 = <&bus_fsys_opp_table>;
+			#interconnect-cells = <0>;
 			status = "disabled";
 		};
 
@@ -491,6 +498,7 @@
 			clocks = <&clock CLK_ACLK100>;
 			clock-names = "bus";
 			operating-points-v2 = <&bus_peri_opp_table>;
+			#interconnect-cells = <0>;
 			status = "disabled";
 		};
 
@@ -499,6 +507,7 @@
 			clocks = <&clock CLK_SCLK_MFC>;
 			clock-names = "bus";
 			operating-points-v2 = <&bus_leftbus_opp_table>;
+			#interconnect-cells = <0>;
 			status = "disabled";
 		};
 
-- 
2.17.1