linux-kernel - [PATCH v3 03/20] ARM: dts: Add DMC bus node for Exynos3250

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Message-id: <1449810479-14763-4-git-send-email-cw00.choi@samsung.com>
Date:	Fri, 11 Dec 2015 14:07:42 +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 v3 03/20] ARM: dts: Add DMC bus node for Exynos3250

This patch adds the DMC (Dynamic Memory Controller) bus node for Exynos3250 SoC.
The DMC is an AMBA AXI-compliant slave to interface external JEDEC standard
SDRAM devices. The bus includes the OPP tables and the source clock for DMC
block.

Following list specifies the detailed relation between the clock and DMC block:
- The source clock of DMC block : div_dmc

Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
---
 arch/arm/boot/dts/exynos3250.dtsi | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/arch/arm/boot/dts/exynos3250.dtsi b/arch/arm/boot/dts/exynos3250.dtsi
index 18e3deffbf48..262b3b1995fd 100644
--- a/arch/arm/boot/dts/exynos3250.dtsi
+++ b/arch/arm/boot/dts/exynos3250.dtsi
@@ -701,6 +701,40 @@
 			clock-names = "ppmu";
 			status = "disabled";
 		};
+
+		bus_dmc: bus_dmc {
+			compatible = "samsung,exynos-bus";
+			clocks = <&cmu_dmc CLK_DIV_DMC>;
+			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@...00000 {
+				opp-hz = /bits/ 64 <50000000>;
+				opp-microvolt = <800000>;
+			};
+			opp@...000000 {
+				opp-hz = /bits/ 64 <100000000>;
+				opp-microvolt = <800000>;
+			};
+			opp@...000000 {
+				opp-hz = /bits/ 64 <134000000>;
+				opp-microvolt = <800000>;
+			};
+			opp@...000000 {
+				opp-hz = /bits/ 64 <200000000>;
+				opp-microvolt = <825000>;
+			};
+			opp@...000000 {
+				opp-hz = /bits/ 64 <400000000>;
+				opp-microvolt = <875000>;
+			};
+		};
 	};
 };
 
-- 
1.9.1

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