diff --git a/arch/arm/dts/rk3328-sdram-ddr4-1600.dtsi b/arch/arm/dts/rk3328-sdram-ddr4-1600.dtsi
new file mode 100644
index 0000000000..9594bb4283
--- /dev/null
+++ b/arch/arm/dts/rk3328-sdram-ddr4-1600.dtsi
@@ -0,0 +1,226 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+// Copyright (c) 2018 Fuzhou Rockchip Electronics Co., Ltd.
+
+&dmc {
+	rockchip,sdram-params = <
+		0x1
+		0xA
+		0x2
+		0x1
+		0x0
+		0x0
+		0x11
+		0x0
+		0x11
+		0x0
+		0
+
+		0x94496354
+		0x00000000
+		0x0000002a
+		0x000004e2
+		0x00000015
+		0x0000034a
+		0x000000ff
+
+		800
+		0
+		1
+		0
+		0
+
+		0x00000000
+		0x43041010
+		0x00000064
+		0x0061008c
+		0x000000d0
+		0x000200c5
+		0x000000d4
+		0x00500000
+		0x000000d8
+		0x00000100
+		0x000000dc
+		0x03140401
+		0x000000e0
+		0x00000000
+		0x000000e4
+		0x00110000
+		0x000000e8
+		0x00000420
+		0x000000ec
+		0x00000400
+		0x000000f4
+		0x000f011f
+		0x00000100
+		0x0c0e1b0e
+		0x00000104
+		0x00030314
+		0x00000108
+		0x0506050b
+		0x0000010c
+		0x0040400c
+		0x00000110
+		0x06030307
+		0x00000114
+		0x04040302
+		0x00000120
+		0x06060b06
+		0x00000124
+		0x00020308
+		0x00000180
+		0x01000040
+		0x00000184
+		0x00000000
+		0x00000190
+		0x07040003
+		0x00000198
+		0x05001100
+		0x000001a0
+		0xc0400003
+		0x00000240
+		0x0600060c
+		0x00000244
+		0x00000201
+		0x00000250
+		0x00000f00
+		0x00000490
+		0x00000001
+		0xffffffff
+		0xffffffff
+		0xffffffff
+		0xffffffff
+		0xffffffff
+		0xffffffff
+		0xffffffff
+		0xffffffff
+		0xffffffff
+		0xffffffff
+		0xffffffff
+		0xffffffff
+		0xffffffff
+		0xffffffff
+
+		0x00000004
+		0x0000000c
+		0x00000028
+		0x0000000c
+		0x0000002c
+		0x00000000
+		0x00000030
+		0x00000009
+		0xffffffff
+		0xffffffff
+
+		0x77
+		0x88
+		0x79
+		0x79
+		0x87
+		0x97
+		0x87
+		0x78
+		0x77
+		0x78
+		0x87
+		0x88
+		0x87
+		0x87
+		0x77
+
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x69
+		0x9
+
+		0x77
+		0x78
+		0x77
+		0x78
+		0x77
+		0x78
+		0x77
+		0x78
+		0x77
+		0x79
+		0x9
+
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x69
+		0x9
+
+		0x77
+		0x78
+		0x77
+		0x77
+		0x77
+		0x77
+		0x77
+		0x77
+		0x77
+		0x79
+		0x9
+
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x69
+		0x9
+
+		0x77
+		0x78
+		0x77
+		0x78
+		0x77
+		0x78
+		0x77
+		0x78
+		0x77
+		0x79
+		0x9
+
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x69
+		0x9
+
+		0x77
+		0x78
+		0x77
+		0x77
+		0x77
+		0x77
+		0x77
+		0x77
+		0x77
+		0x79
+		0x9
+	>;
+};
diff --git a/arch/arm/dts/rk3328-sdram-ddr4-1866.dtsi b/arch/arm/dts/rk3328-sdram-ddr4-1866.dtsi
new file mode 100644
index 0000000000..db1e1e74ce
--- /dev/null
+++ b/arch/arm/dts/rk3328-sdram-ddr4-1866.dtsi
@@ -0,0 +1,226 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+// Copyright (c) 2018 Fuzhou Rockchip Electronics Co., Ltd.
+
+&dmc {
+	rockchip,sdram-params = <
+		0x1
+		0xA
+		0x2
+		0x1
+		0x0
+		0x0
+		0x11
+		0x0
+		0x11
+		0x0
+		0
+
+		0x9869a3d7
+		0x00000000
+		0x0000002d
+		0x000004e2
+		0x00000015
+		0x00000352
+		0x000000ff
+
+		933
+		0
+		1
+		0
+		0
+
+		0x00000000
+		0x43041010
+		0x00000064
+		0x007100a4
+		0x000000d0
+		0x000200e5
+		0x000000d4
+		0x005d0000
+		0x000000d8
+		0x00000100
+		0x000000dc
+		0x05240401
+		0x000000e0
+		0x00080000
+		0x000000e4
+		0x00110000
+		0x000000e8
+		0x00000420
+		0x000000ec
+		0x00000400
+		0x000000f4
+		0x000f011f
+		0x00000100
+		0x0e0e1f10
+		0x00000104
+		0x00030317
+		0x00000108
+		0x0507050c
+		0x0000010c
+		0x0040400c
+		0x00000110
+		0x07030308
+		0x00000114
+		0x05050303
+		0x00000120
+		0x07070b07
+		0x00000124
+		0x00020309
+		0x00000180
+		0x01000040
+		0x00000184
+		0x00000000
+		0x00000190
+		0x07050003
+		0x00000198
+		0x05001100
+		0x000001a0
+		0xc0400003
+		0x00000240
+		0x06000610
+		0x00000244
+		0x00000201
+		0x00000250
+		0x00000f00
+		0x00000490
+		0x00000001
+		0xffffffff
+		0xffffffff
+		0xffffffff
+		0xffffffff
+		0xffffffff
+		0xffffffff
+		0xffffffff
+		0xffffffff
+		0xffffffff
+		0xffffffff
+		0xffffffff
+		0xffffffff
+		0xffffffff
+		0xffffffff
+
+		0x00000004
+		0x0000000c
+		0x00000028
+		0x0000000e
+		0x0000002c
+		0x00000000
+		0x00000030
+		0x0000000a
+		0xffffffff
+		0xffffffff
+
+		0x77
+		0x88
+		0x79
+		0x79
+		0x87
+		0x97
+		0x87
+		0x78
+		0x77
+		0x78
+		0x87
+		0x88
+		0x87
+		0x87
+		0x77
+
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x69
+		0x9
+
+		0x77
+		0x78
+		0x77
+		0x78
+		0x77
+		0x78
+		0x77
+		0x78
+		0x77
+		0x79
+		0x9
+
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x69
+		0x9
+
+		0x77
+		0x78
+		0x77
+		0x77
+		0x77
+		0x77
+		0x77
+		0x77
+		0x77
+		0x79
+		0x9
+
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x69
+		0x9
+
+		0x77
+		0x78
+		0x77
+		0x78
+		0x77
+		0x78
+		0x77
+		0x78
+		0x77
+		0x79
+		0x9
+
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x78
+		0x69
+		0x9
+
+		0x77
+		0x78
+		0x77
+		0x77
+		0x77
+		0x77
+		0x77
+		0x77
+		0x77
+		0x79
+		0x9
+	>;
+};