linux-kernel - [PATCH v4 14/20] ARM: dts: Add bus nodes using VDD

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Message-id: <1450075104-13705-15-git-send-email-cw00.choi@samsung.com>
Date:	Mon, 14 Dec 2015 15:38:18 +0900
From:	Chanwoo Choi <cw00.choi@...sung.com>
To:	myungjoo.ham@...sung.com, k.kozlowski@...sung.com, kgene@...nel.org
Cc:	kyungmin.park@...sung.com, robh+dt@...nel.org, pawel.moll@....com,
	mark.rutland@....com, ijc+devicetree@...lion.org.uk,
	galak@...eaurora.org, linux@....linux.org.uk,
	tjakobi@...h.uni-bielefeld.de, linux.amoon@...il.com,
	cw00.choi@...sung.com, linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: [PATCH v4 14/20] ARM: dts: Add bus nodes using VDD_MIF for Exynos4x12

This patch adds the bus nodes using VDD_MIF for Exynos4x12 SoC.
Exynos4x12 has the following AXI buses to translate data
between DRAM and DMC/ACP/C2C.

Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
[linux.amoon: Tested on Odroid U3]
Tested-by: Anand Moon <linux.amoon@...il.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
---
 arch/arm/boot/dts/exynos4x12.dtsi | 68 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)

diff --git a/arch/arm/boot/dts/exynos4x12.dtsi b/arch/arm/boot/dts/exynos4x12.dtsi
index 84a23f962946..99a0f4ca3d47 100644
--- a/arch/arm/boot/dts/exynos4x12.dtsi
+++ b/arch/arm/boot/dts/exynos4x12.dtsi
@@ -281,6 +281,74 @@
 		clocks = <&clock CLK_SMMU_LITE1>, <&clock CLK_FIMC_LITE1>;
 		#iommu-cells = <0>;
 	};
+
+	bus_dmc: bus_dmc {
+		compatible = "samsung,exynos-bus";
+		clocks = <&clock CLK_DIV_DMC>;
+		clock-names = "bus";
+		operating-points-v2 = <&bus_dmc_opp_table>;
+		status = "disabled";
+	};
+
+	bus_acp: bus_acp {
+		compatible = "samsung,exynos-bus";
+		clocks = <&clock CLK_DIV_ACP>;
+		clock-names = "bus";
+		operating-points-v2 = <&bus_acp_opp_table>;
+		status = "disabled";
+	};
+
+	bus_c2c: bus_c2c {
+		compatible = "samsung,exynos-bus";
+		clocks = <&clock CLK_DIV_C2C>;
+		clock-names = "bus";
+		operating-points-v2 = <&bus_dmc_opp_table>;
+		status = "disabled";
+	};
+
+	bus_dmc_opp_table: opp_table1 {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp@...000000 {
+			opp-hz = /bits/ 64 <100000000>;
+			opp-microvolt = <900000>;
+		};
+		opp@...000000 {
+			opp-hz = /bits/ 64 <134000000>;
+			opp-microvolt = <900000>;
+		};
+		opp@...000000 {
+			opp-hz = /bits/ 64 <160000000>;
+			opp-microvolt = <900000>;
+		};
+		opp@...000000 {
+			opp-hz = /bits/ 64 <267000000>;
+			opp-microvolt = <950000>;
+		};
+		opp@...000000 {
+			opp-hz = /bits/ 64 <400000000>;
+			opp-microvolt = <1050000>;
+		};
+	};
+
+	bus_acp_opp_table: opp_table2 {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp@...000000 {
+			opp-hz = /bits/ 64 <100000000>;
+		};
+		opp@...000000 {
+			opp-hz = /bits/ 64 <134000000>;
+		};
+		opp@...000000 {
+			opp-hz = /bits/ 64 <160000000>;
+		};
+		opp@...000000 {
+			opp-hz = /bits/ 64 <267000000>;
+		};
+	};
 };
 
 &combiner {
-- 
1.9.1

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