1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * Copyright 2013 Freescale Semiconductor, Inc.
4  */
5 
6 #ifndef __DDR_H__
7 #define __DDR_H__
8 struct board_specific_parameters {
9 	u32 n_ranks;
10 	u32 datarate_mhz_high;
11 	u32 rank_gb;
12 	u32 clk_adjust;
13 	u32 wrlvl_start;
14 	u32 wrlvl_ctl_2;
15 	u32 wrlvl_ctl_3;
16 };
17 
18 /*
19  * These tables contain all valid speeds we want to override with board
20  * specific parameters. datarate_mhz_high values need to be in ascending order
21  * for each n_ranks group.
22  */
23 
24 static const struct board_specific_parameters udimm0[] = {
25 	/*
26 	 * memory controller 0
27 	 *   num|  hi| rank|  clk| wrlvl | wrlvl | wrlvl |
28 	 * ranks| mhz| GB  |adjst| start | ctl2  | ctl3  |
29 	 */
30 	{2,  1200,  0, 10,  7,  0x0708090a,  0x0b0c0d09},
31 	{2,  1400,  0, 10,  7,  0x08090a0c,  0x0d0e0f0a},
32 	{2,  1700,  0, 10,  8,  0x090a0b0c,  0x0e10110c},
33 	{2,  1900,  0, 10,  8,  0x090b0c0f,  0x1012130d},
34 	{2,  2140,  0, 10,  8,  0x090b0c0f,  0x1012130d},
35 	{1,  1200,  0, 10,  7,  0x0808090a,  0x0b0c0c0a},
36 	{1,  1500,  0, 10,  6,  0x07070809,  0x0a0b0b09},
37 	{1,  1600,  0, 10,  8,  0x090b0b0d,  0x0d0e0f0b},
38 	{1,  1700,  0,  8,  8,  0x080a0a0c,  0x0c0d0e0a},
39 	{1,  1900,  0, 10,  8,  0x090a0c0d,  0x0e0f110c},
40 	{1,  2140,  0,  8,  8,  0x090a0b0d,  0x0e0f110b},
41 	{}
42 };
43 
44 static const struct board_specific_parameters rdimm0[] = {
45 	/*
46 	 * memory controller 0
47 	 *   num|  hi| rank|  clk| wrlvl |   wrlvl   |  wrlvl |
48 	 * ranks| mhz| GB  |adjst| start |   ctl2    |  ctl3  |
49 	 */
50 	/* TODO: need tuning these parameters if RDIMM is used */
51 	{4,  1350, 0, 10,     9, 0x08070605, 0x06070806},
52 	{4,  1666, 0, 10,    11, 0x0a080706, 0x07090906},
53 	{4,  2140, 0, 10,    12, 0x0b090807, 0x080a0b07},
54 	{2,  1350, 0, 10,     9, 0x08070605, 0x06070806},
55 	{2,  1666, 0, 10,    11, 0x0a090806, 0x08090a06},
56 	{2,  2140, 0, 10,    12, 0x0b090807, 0x080a0b07},
57 	{1,  1350, 0, 10,     9, 0x08070605, 0x06070806},
58 	{1,  1666, 0, 10,    11, 0x0a090806, 0x08090a06},
59 	{1,  2140, 0,  8,    12, 0x0b090807, 0x080a0b07},
60 	{}
61 };
62 
63 static const struct board_specific_parameters *udimms[] = {
64 	udimm0,
65 };
66 
67 static const struct board_specific_parameters *rdimms[] = {
68 	rdimm0,
69 };
70 #endif
71