rk3288-firefly-reload-core.dtsi:

	vdd_cpu: syr827@40 {
		...
		regulator-min-microvolt = <712500>;
		regulator-max-microvolt = <1500000>;
	};

	vdd_gpu: syr828@41 {
		...
		regulator-min-microvolt = <712500>;
		regulator-max-microvolt = <1500000>;
	};

rk3288-my-board.dts:

&gpu_opp_table {
	/delete-node/ opp-100000000;
	/delete-node/ opp-200000000;
	/delete-node/ opp-300000000;
	/delete-node/ opp-400000000;
	/delete-node/ opp-600000000;

	opp-500000000 {
		opp-hz = /bits/ 64 <500000000>;
		opp-microvolt = <1200000>;
	};
};

&cpu_opp_table {
	/delete-node/ opp-312000000;

	opp-1512000000 {
		opp-microvolt = <1250000>;
	};
	opp-1608000000 {
		opp-microvolt = <1300000>;
	};
	opp-1704000000 {
		opp-hz = /bits/ 64 <1704000000>;
		opp-microvolt = <1350000>;
	};
	opp-1800000000 {
		opp-hz = /bits/ 64 <1800000000>;
		opp-microvolt = <1400000>;
	};
};