From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chanwoo Choi Subject: [PATCH v4 03/20] ARM: dts: Add DMC bus node for Exynos3250 Date: Mon, 14 Dec 2015 15:38:07 +0900 Message-ID: <1450075104-13705-4-git-send-email-cw00.choi@samsung.com> References: <1450075104-13705-1-git-send-email-cw00.choi@samsung.com> Return-path: In-reply-to: <1450075104-13705-1-git-send-email-cw00.choi@samsung.com> Sender: linux-kernel-owner@vger.kernel.org To: myungjoo.ham@samsung.com, k.kozlowski@samsung.com, kgene@kernel.org Cc: kyungmin.park@samsung.com, robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com, ijc+devicetree@hellion.org.uk, galak@codeaurora.org, linux@arm.linux.org.uk, tjakobi@math.uni-bielefeld.de, linux.amoon@gmail.com, cw00.choi@samsung.com, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-samsung-soc@vger.kernel.org, devicetree@vger.kernel.org List-Id: devicetree@vger.kernel.org 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 Reviewed-by: Krzysztof Kozlowski --- 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@50000000 { + opp-hz = /bits/ 64 <50000000>; + opp-microvolt = <800000>; + }; + opp@100000000 { + opp-hz = /bits/ 64 <100000000>; + opp-microvolt = <800000>; + }; + opp@134000000 { + opp-hz = /bits/ 64 <134000000>; + opp-microvolt = <800000>; + }; + opp@200000000 { + opp-hz = /bits/ 64 <200000000>; + opp-microvolt = <825000>; + }; + opp@400000000 { + opp-hz = /bits/ 64 <400000000>; + opp-microvolt = <875000>; + }; + }; }; }; -- 1.9.1