关键词：rk3399; rockchip,px30-dmc; rockchip,rk3128-dmc;rockchip,rk3228-dmc;rockchip,rk3288-dmc; rockchip,rk3308-dmc;rockchip,rk3328-dmc;rockchip,rk3368-dmc;rockchip,rk3399-dmc;  

rk3399 — dmc dts配置

1、DMC简介：

DMC(Dynamic Memory Controller) ，内存动态频率控制器

2、属性值配置：

- compatible: 可以配置成以下值:
  - "rockchip,px30-dmc" - for PX30 SoCs.
  - "rockchip,rk3128-dmc" - for RK3128 SoCs.
  - "rockchip,rk3228-dmc" - for RK3228 SoCs.
  - "rockchip,rk3288-dmc" - for RK3288 SoCs.
  - "rockchip,rk3308-dmc" - for RK3308 SoCs.
  - "rockchip,rk3328-dmc" - for RK3328 SoCs.
  - "rockchip,rk3368-dmc" - for RK3368 SoCs.
  - "rockchip,rk3399-dmc" - for RK3399 SoCs.
- devfreq-events: 指向DFI控制器
- interrupts: 配置DMC的中断号
- clocks: 配置DMC的时钟，与clock-names 一一对应；
- clock-names : 时钟名称配置成："pclk_ddr_mon";
- operating-points-v2: 指向内存动态频率表；
- center-supply: 配置DMC 供电节点.
- status: dmc状态配置 

3、以rk3399为例：

Example:

	ddr_timing: ddr_timing {
		compatible = "rockchip,ddr-timing";
		ddr3_speed_bin = <21>;
		pd_idle = <0>;
		sr_idle = <0>;
		sr_mc_gate_idle = <0>;
		srpd_lite_idle  = <0>;
		standby_idle = <0>;
		dram_dll_dis_freq = <300>;
		phy_dll_dis_freq = <125>;

		ddr3_odt_dis_freq = <333>;
		ddr3_drv = <DDR3_DS_40ohm>;
		ddr3_odt = <DDR3_ODT_120ohm>;
		phy_ddr3_ca_drv = <PHY_DRV_ODT_40>;
		phy_ddr3_dq_drv = <PHY_DRV_ODT_40>;
		phy_ddr3_odt = <PHY_DRV_ODT_240>;

		lpddr3_odt_dis_freq = <333>;
		lpddr3_drv = <LP3_DS_34ohm>;
		lpddr3_odt = <LP3_ODT_240ohm>;
		phy_lpddr3_ca_drv = <PHY_DRV_ODT_40>;
		phy_lpddr3_dq_drv = <PHY_DRV_ODT_40>;
		phy_lpddr3_odt = <PHY_DRV_ODT_240>;

		lpddr4_odt_dis_freq = <333>;
		lpddr4_drv = <LP4_PDDS_60ohm>;
		lpddr4_dq_odt = <LP4_DQ_ODT_40ohm>;
		lpddr4_ca_odt = <LP4_CA_ODT_40ohm>;
		phy_lpddr4_ca_drv = <PHY_DRV_ODT_40>;
		phy_lpddr4_ck_cs_drv = <PHY_DRV_ODT_80>;
		phy_lpddr4_dq_drv = <PHY_DRV_ODT_80>;
		phy_lpddr4_odt = <PHY_DRV_ODT_60>;
	};

	dmc_opp_table: dmc_opp_table {
		compatible = "operating-points-v2";

		opp00 {
			opp-hz = /bits/ 64 <300000000>;
			opp-microvolt = <900000>;
		};
		opp01 {
			opp-hz = /bits/ 64 <666000000>;
			opp-microvolt = <900000>;
		};
	};

	dmc: dmc {
		compatible = "rockchip,rk3399-dmc";
		devfreq-events = <&dfi>;
		interrupts = <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>;
		clocks = <&cru SCLK_DDRCLK>;
		clock-names = "dmc_clk";
		ddr_timing = <&ddr_timing>;
		operating-points-v2 = <&dmc_opp_table>;
		center-supply = <&ppvar_centerlogic>;
		upthreshold = <15>;
		downdifferential = <10>;
		#cooling-cells = <2>;
		ddr_power_model: ddr_power_model {
			dynamic-power-coefficient = <120>;
			static-power-coefficient = <300>;
			ts = <32000 4700 (-80) 2>;
			thermal-zone = "soc-thermal";
		}
		status = "disabled";
	};