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[RFC PATCH 03/15] ARM: dts: Add DMC bus node for Exynos3250

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This patch adds the DMC (DRAM 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@samsung.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 be0bb32c2d8c..45809f83c628 100644
--- a/arch/arm/boot/dts/exynos3250.dtsi
+++ b/arch/arm/boot/dts/exynos3250.dtsi
@@ -700,6 +700,40 @@
 			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_table0 {
+			compatible = "operating-points-v2";
+			opp-shared;
+
+			opp00 {
+				opp-hz = /bits/ 64 <50000000>;
+				opp-microvolt = <800000>;
+			};
+			opp01 {
+				opp-hz = /bits/ 64 <100000000>;
+				opp-microvolt = <800000>;
+			};
+			opp02 {
+				opp-hz = /bits/ 64 <133000000>;
+				opp-microvolt = <800000>;
+			};
+			opp03 {
+				opp-hz = /bits/ 64 <200000000>;
+				opp-microvolt = <800000>;
+			};
+			opp04 {
+				opp-hz = /bits/ 64 <400000000>;
+				opp-microvolt = <875000>;
+			};
+		};
 	};
 };
 
-- 
1.9.1

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Thread

[RFC PATCH 00/15] PM / devferq: Add generic exynos bus frequency  driver and new passive governor Chanwoo Choi <cw00.choi@samsung.com> - 2015-11-26 14:50 +0100
  [RFC PATCH 12/15] ARM: dts: Add support of bus frequency using VDD_INT  for exynos3250-rinato Chanwoo Choi <cw00.choi@samsung.com> - 2015-11-26 14:50 +0100
  [RFC PATCH 07/15] PM / devfreq: Show the related information according  to governor type Chanwoo Choi <cw00.choi@samsung.com> - 2015-11-26 14:50 +0100
  [RFC PATCH 14/15] ARM: dts: Add bus nodes using VDD_INT for Exynos4x12 Chanwoo Choi <cw00.choi@samsung.com> - 2015-11-26 14:50 +0100
  [RFC PATCH 03/15] ARM: dts: Add DMC bus node for Exynos3250 Chanwoo Choi <cw00.choi@samsung.com> - 2015-11-26 14:50 +0100
  [RFC PATCH 08/15] PM / devfreq: exynos: Add support of bus frequency  of sub-blocks using passive governor Chanwoo Choi <cw00.choi@samsung.com> - 2015-11-26 15:00 +0100
  [RFC PATCH 11/15] ARM: dts: Add bus nodes using VDD_INT for Exynos3250 Chanwoo Choi <cw00.choi@samsung.com> - 2015-11-26 15:00 +0100
  [RFC PATCH 02/15] PM / devfreq: exynos: Add documentation for generic  exynos bus frequency driver Chanwoo Choi <cw00.choi@samsung.com> - 2015-11-26 15:00 +0100
    Re: [RFC PATCH 02/15] PM / devfreq: exynos: Add documentation for  generic exynos bus frequency driver Rob Herring <robh@kernel.org> - 2015-11-27 21:40 +0100
      Re: [RFC PATCH 02/15] PM / devfreq: exynos: Add documentation for  generic exynos bus frequency driver Chanwoo Choi <cwchoi00@gmail.com> - 2015-11-28 03:20 +0100
  [RFC PATCH 06/15] PM / devfreq: Add devfreq_get_devfreq_by_phandle() Chanwoo Choi <cw00.choi@samsung.com> - 2015-11-26 15:00 +0100
  [RFC PATCH 01/15] PM / devfreq: exynos: Add generic exynos bus  frequency driver Chanwoo Choi <cw00.choi@samsung.com> - 2015-11-26 15:00 +0100
    Re: [RFC PATCH 01/15] PM / devfreq: exynos: Add generic exynos bus  frequency driver MyungJoo Ham <myungjoo.ham@samsung.com> - 2015-11-26 15:10 +0100
      Re: [RFC PATCH 01/15] PM / devfreq: exynos: Add generic exynos bus  frequency driver Chanwoo Choi <cwchoi00@gmail.com> - 2015-11-26 17:20 +0100
        Re: [RFC PATCH 01/15] PM / devfreq: exynos: Add generic exynos bus  frequency driver Anand Moon <linux.amoon@gmail.com> - 2015-11-26 18:20 +0100
          Re: [RFC PATCH 01/15] PM / devfreq: exynos: Add generic exynos bus  frequency driver Chanwoo Choi <cw00.choi@samsung.com> - 2015-11-27 01:40 +0100
  [RFC PATCH 05/15] PM / devfreq: Add new passive governor Chanwoo Choi <cw00.choi@samsung.com> - 2015-11-26 15:00 +0100
  [RFC PATCH 09/15] PM / devfreq: exynos: Update documentation for bus  devices using passive governor Chanwoo Choi <cw00.choi@samsung.com> - 2015-11-26 15:00 +0100

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