xref: /OK3568_Linux_fs/kernel/arch/arm/boot/dts/rk3288-dram-default-timing.dtsi (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1/*
2 * Copyright (c) 2017 Fuzhou Rockchip Electronics Co., Ltd
3 *
4 * This file is dual-licensed: you can use it either under the terms
5 * of the GPL or the X11 license, at your option. Note that this dual
6 * licensing only applies to this file, and not this project as a
7 * whole.
8 *
9 *  a) This library is free software; you can redistribute it and/or
10 *     modify it under the terms of the GNU General Public License as
11 *     published by the Free Software Foundation; either version 2 of the
12 *     License, or (at your option) any later version.
13 *
14 *     This library is distributed in the hope that it will be useful,
15 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
16 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17 *     GNU General Public License for more details.
18 *
19 * Or, alternatively,
20 *
21 *  b) Permission is hereby granted, free of charge, to any person
22 *     obtaining a copy of this software and associated documentation
23 *     files (the "Software"), to deal in the Software without
24 *     restriction, including without limitation the rights to use,
25 *     copy, modify, merge, publish, distribute, sublicense, and/or
26 *     sell copies of the Software, and to permit persons to whom the
27 *     Software is furnished to do so, subject to the following
28 *     conditions:
29 *
30 *     The above copyright notice and this permission notice shall be
31 *     included in all copies or substantial portions of the Software.
32 *
33 *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
34 *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
35 *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
36 *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
37 *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
38 *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
39 *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
40 *     OTHER DEALINGS IN THE SOFTWARE.
41 */
42#include <dt-bindings/clock/rockchip-ddr.h>
43#include <dt-bindings/memory/rk3288-dram.h>
44
45/ {
46	ddr_timing: ddr_timing {
47		compatible = "rockchip,ddr-timing";
48		ddr3_speed_bin = <DDR3_DEFAULT>;
49		pd_idle = <0x40>;
50		sr_idle = <0x1>;
51
52		auto_pd_dis_freq = <800>;
53		auto_sr_dis_freq = <800>;
54		ddr3_dll_dis_freq = <300>;
55		phy_dll_dis_freq = <250>;
56
57		ddr3_odt_dis_freq = <333>;
58		phy_ddr3_odt_dis_freq = <333>;
59		ddr3_drv = <DDR3_DS_40ohm>;
60		ddr3_odt = <DDR3_ODT_120ohm>;
61		phy_ddr3_drv = <PHY_DDR3_RON_34ohm>;
62		phy_ddr3_odt = <PHY_DDR3_RTT_155ohm>;
63
64		lpddr2_drv = <LP2_DS_40ohm>;
65		phy_lpddr2_drv = <PHY_LP23_RON_35ohm>;
66
67		lpddr3_odt_dis_freq = <333>;
68		phy_lpddr3_odt_dis_freq = <333>;
69		lpddr3_drv = <LP3_DS_40ohm>;
70		lpddr3_odt = <LP3_ODT_240ohm>;
71		phy_lpddr3_drv = <PHY_LP23_RON_35ohm>;
72		phy_lpddr3_odt = <PHY_LP23_RTT_155ohm>;
73	};
74};
75