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authorChanwoo Choi <cw00.choi@samsung.com>2016-04-11 06:57:49 +0300
committerKrzysztof Kozlowski <k.kozlowski@samsung.com>2016-05-03 13:22:31 +0300
commit6b088a62ebc327a204bd102233515d2b67235285 (patch)
treed8f96401b5391863c5fe0fde2376981ec131c643 /arch/arm/boot/dts/exynos3250.dtsi
parent483997a761c003257eb0606bce8d408743ffd8c5 (diff)
downloadlinux-6b088a62ebc327a204bd102233515d2b67235285.tar.xz
ARM: dts: exynos: 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@samsung.com> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Diffstat (limited to 'arch/arm/boot/dts/exynos3250.dtsi')
-rw-r--r--arch/arm/boot/dts/exynos3250.dtsi34
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/exynos3250.dtsi b/arch/arm/boot/dts/exynos3250.dtsi
index 137f9015d4e8..1ae72c4fa55e 100644
--- a/arch/arm/boot/dts/exynos3250.dtsi
+++ b/arch/arm/boot/dts/exynos3250.dtsi
@@ -688,6 +688,40 @@
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>;
+ };
+ };
};
};