xref: /openbmc/u-boot/board/freescale/t208xrdb/ddr.h (revision 20c700f8)
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 
25 static const struct board_specific_parameters udimm0[] = {
26 	/*
27 	 * memory controller 0
28 	 *   num|  hi| rank|  clk| wrlvl |   wrlvl   |  wrlvl |
29 	 * ranks| mhz| GB  |adjst| start |   ctl2    |  ctl3  |
30 	 */
31 	{2,  1200, 2, 10,     7, 0x0808090a, 0x0b0c0c0a},
32 	{2,  1500, 2, 10,     6, 0x07070809, 0x0a0b0b09},
33 	{2,  1600, 2, 10,     8, 0x0808070b, 0x0c0d0e0a},
34 	{2,  1700, 2,  8,     7, 0x080a0a0c, 0x0c0d0e0a},
35 	{2,  1900, 0, 10,     7, 0x0808080c, 0x0b0c0c09},
36 	{1,  1200, 2, 10,     7, 0x0808090a, 0x0b0c0c0a},
37 	{1,  1500, 2, 10,     6, 0x07070809, 0x0a0b0b09},
38 	{1,  1600, 2, 10,     8, 0x0808070b, 0x0c0d0e0a},
39 	{1,  1700, 2,  8,     7, 0x080a0a0c, 0x0c0d0e0a},
40 	{1,  1900, 0, 10,     7, 0x0808080c, 0x0b0c0c09},
41 	{}
42 };
43 
44 static const struct board_specific_parameters *udimms[] = {
45 	udimm0,
46 };
47 #endif
48