xref: /openbmc/u-boot/board/freescale/t4rdb/ddr.h (revision ebce73f0)
1 /*
2  * Copyright 2014 Freescale Semiconductor, Inc.
3  *
4  * SPDX-License-Identifier:	GPL-2.0+
5  */
6 
7 #ifndef __DDR_H__
8 #define __DDR_H__
9 struct board_specific_parameters {
10 	u32 n_ranks;
11 	u32 datarate_mhz_high;
12 	u32 rank_gb;
13 	u32 clk_adjust;
14 	u32 wrlvl_start;
15 	u32 wrlvl_ctl_2;
16 	u32 wrlvl_ctl_3;
17 };
18 
19 /*
20  * These tables contain all valid speeds we want to override with board
21  * specific parameters. datarate_mhz_high values need to be in ascending order
22  * for each n_ranks group.
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,  1350, 4,  8,     8, 0x0809090b, 0x0c0c0d0a},
31 	{2,  1350, 0, 10,     7, 0x0709090b, 0x0c0c0d09},
32 	{2,  1666, 4,  8,     8, 0x080a0a0d, 0x0d10100b},
33 	{2,  1666, 0, 10,     7, 0x080a0a0c, 0x0d0d0e0a},
34 	{2,  1900, 0,  8,     8, 0x090a0b0e, 0x0f11120c},
35 	{2,  2140, 0,  8,     8, 0x090a0b0e, 0x0f11120c},
36 	{1,  1350, 0, 10,     8, 0x0809090b, 0x0c0c0d0a},
37 	{1,  1700, 0, 10,     8, 0x080a0a0c, 0x0c0d0e0a},
38 	{1,  1900, 0,  8,     8, 0x080a0a0c, 0x0e0e0f0a},
39 	{1,  2140, 0,  8,     8, 0x090a0b0c, 0x0e0f100b},
40 	{}
41 };
42 
43 static const struct board_specific_parameters rdimm0[] = {
44 	/*
45 	 * memory controller 0
46 	 *   num|  hi| rank|  clk| wrlvl |   wrlvl   |  wrlvl
47 	 * ranks| mhz| GB  |adjst| start |   ctl2    |  ctl3
48 	 */
49 	{4,  1350, 0, 10,     9, 0x08070605, 0x06070806},
50 	{4,  1666, 0, 10,    11, 0x0a080706, 0x07090906},
51 	{4,  2140, 0, 10,    12, 0x0b090807, 0x080a0b07},
52 	{2,  1350, 0, 10,     9, 0x08070605, 0x06070806},
53 	{2,  1666, 0, 10,    11, 0x0a090806, 0x08090a06},
54 	{2,  2140, 0, 10,    12, 0x0b090807, 0x080a0b07},
55 	{1,  1350, 0, 10,     9, 0x08070605, 0x06070806},
56 	{1,  1666, 0, 10,    11, 0x0a090806, 0x08090a06},
57 	{1,  2140, 0,  8,    12, 0x0b090807, 0x080a0b07},
58 	{}
59 };
60 
61 /*
62  * The three slots have slightly different timing. The center values are good
63  * for all slots. We use identical speed tables for them. In future use, if
64  * DIMMs require separated tables, make more entries as needed.
65  */
66 static const struct board_specific_parameters *udimms[] = {
67 	udimm0,
68 };
69 
70 /*
71  * The three slots have slightly different timing. See comments above.
72  */
73 static const struct board_specific_parameters *rdimms[] = {
74 	rdimm0,
75 };
76 
77 
78 #endif
79