1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * Copyright 2014 Freescale Semiconductor, Inc.
4  */
5 
6 #ifndef __DDR_H__
7 #define __DDR_H__
8 
9 void erratum_a008850_post(void);
10 
11 struct board_specific_parameters {
12 	u32 n_ranks;
13 	u32 datarate_mhz_high;
14 	u32 rank_gb;
15 	u32 clk_adjust;
16 	u32 wrlvl_start;
17 	u32 wrlvl_ctl_2;
18 	u32 wrlvl_ctl_3;
19 	u32 cpo_override;
20 	u32 write_data_delay;
21 	u32 force_2t;
22 };
23 
24 /*
25  * These tables contain all valid speeds we want to override with board
26  * specific parameters. datarate_mhz_high values need to be in ascending order
27  * for each n_ranks group.
28  */
29 static const struct board_specific_parameters udimm0[] = {
30 	/*
31 	 * memory controller 0
32 	 *   num|  hi| rank|  clk| wrlvl |   wrlvl   |  wrlvl | cpo  |wrdata|2T
33 	 * ranks| mhz| GB  |adjst| start |   ctl2    |  ctl3  |      |delay |
34 	 */
35 #ifdef CONFIG_SYS_FSL_DDR4
36 	{2,  1666, 0, 8,     7, 0x0808090B, 0x0C0D0E0A,},
37 	{2,  1900, 0, 8,     6, 0x08080A0C, 0x0D0E0F0A,},
38 	{1,  1666, 0, 8,     8, 0x090A0B0B, 0x0C0D0E0C,},
39 	{1,  1900, 0, 8,     9, 0x0A0B0C0B, 0x0D0E0F0D,},
40 	{1,  2200, 0, 8,    10, 0x0B0C0D0C, 0x0E0F110E,},
41 #elif defined(CONFIG_SYS_FSL_DDR3)
42 	{1,  833,  1, 12,     8, 0x06060607, 0x08080807,   0x1f,    2,  0},
43 	{1,  1350, 1, 12,     8, 0x0708080A, 0x0A0B0C09,   0x1f,    2,  0},
44 	{1,  833,  2, 12,     8, 0x06060607, 0x08080807,   0x1f,    2,  0},
45 	{1,  1350, 2, 12,     8, 0x0708080A, 0x0A0B0C09,   0x1f,    2,  0},
46 	{2,  833,  4, 12,     8, 0x06060607, 0x08080807,   0x1f,    2,  0},
47 	{2,  1350, 4, 12,     8, 0x0708080A, 0x0A0B0C09,   0x1f,    2,  0},
48 	{2,  1350, 0, 12,     8, 0x0708080A, 0x0A0B0C09,   0x1f,    2,  0},
49 	{2,  1666, 4, 8,    0xa, 0x0B08090C, 0x0B0E0D0A,   0x1f,    2,  0},
50 	{2,  1666, 0, 8,    0xa, 0x0B08090C, 0x0B0E0D0A,   0x1f,    2,  0},
51 #else
52 #error DDR type not defined
53 #endif
54 	{}
55 };
56 
57 static const struct board_specific_parameters *udimms[] = {
58 	udimm0,
59 };
60 
61 #endif
62