1 /* 2 * Copyright 2013 Freescale Semiconductor, Inc. 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License as 6 * published by the Free Software Foundation; either version 2 of 7 * the License, or (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 17 * MA 02111-1307 USA 18 */ 19 20 #ifndef __DDR_H__ 21 #define __DDR_H__ 22 struct board_specific_parameters { 23 u32 n_ranks; 24 u32 datarate_mhz_high; 25 u32 rank_gb; 26 u32 clk_adjust; 27 u32 wrlvl_start; 28 u32 wrlvl_ctl_2; 29 u32 wrlvl_ctl_3; 30 u32 cpo; 31 u32 write_data_delay; 32 u32 force_2T; 33 }; 34 35 /* 36 * These tables contain all valid speeds we want to override with board 37 * specific parameters. datarate_mhz_high values need to be in ascending order 38 * for each n_ranks group. 39 */ 40 41 #ifdef CONFIG_T4240QDS 42 static const struct board_specific_parameters udimm0[] = { 43 /* 44 * memory controller 0 45 * num| hi| rank| clk| wrlvl | wrlvl | wrlvl | cpo |wrdata|2T 46 * ranks| mhz| GB |adjst| start | ctl2 | ctl3 | |delay | 47 */ 48 {2, 1350, 4, 4, 8, 0x0809090b, 0x0c0c0d0a, 0xff, 2, 0}, 49 {2, 1350, 0, 5, 7, 0x0709090b, 0x0c0c0d09, 0xff, 2, 0}, 50 {2, 1666, 4, 4, 8, 0x080a0a0d, 0x0d10100b, 0xff, 2, 0}, 51 {2, 1666, 0, 5, 7, 0x080a0a0c, 0x0d0d0e0a, 0xff, 2, 0}, 52 {2, 1900, 0, 4, 8, 0x090a0b0e, 0x0f11120c, 0xff, 2, 0}, 53 {2, 2140, 0, 4, 8, 0x090a0b0e, 0x0f11120c, 0xff, 2, 0}, 54 {1, 1350, 0, 5, 8, 0x0809090b, 0x0c0c0d0a, 0xff, 2, 0}, 55 {1, 1700, 0, 5, 8, 0x080a0a0c, 0x0c0d0e0a, 0xff, 2, 0}, 56 {1, 1900, 0, 4, 8, 0x080a0a0c, 0x0e0e0f0a, 0xff, 2, 0}, 57 {1, 2140, 0, 4, 8, 0x090a0b0c, 0x0e0f100b, 0xff, 2, 0}, 58 {} 59 }; 60 61 static const struct board_specific_parameters rdimm0[] = { 62 /* 63 * memory controller 0 64 * num| hi| rank| clk| wrlvl | wrlvl | wrlvl | cpo |wrdata|2T 65 * ranks| mhz| GB |adjst| start | ctl2 | ctl3 | |delay | 66 */ 67 {4, 1350, 0, 5, 9, 0x08070605, 0x06070806, 0xff, 2, 0}, 68 {4, 1666, 0, 5, 11, 0x0a080706, 0x07090906, 0xff, 2, 0}, 69 {4, 2140, 0, 5, 12, 0x0b090807, 0x080a0b07, 0xff, 2, 0}, 70 {2, 1350, 0, 5, 9, 0x08070605, 0x06070806, 0xff, 2, 0}, 71 {2, 1666, 0, 5, 11, 0x0a090806, 0x08090a06, 0xff, 2, 0}, 72 {2, 2140, 0, 5, 12, 0x0b090807, 0x080a0b07, 0xff, 2, 0}, 73 {1, 1350, 0, 5, 9, 0x08070605, 0x06070806, 0xff, 2, 0}, 74 {1, 1666, 0, 5, 11, 0x0a090806, 0x08090a06, 0xff, 2, 0}, 75 {1, 2140, 0, 4, 12, 0x0b090807, 0x080a0b07, 0xff, 2, 0}, 76 {} 77 }; 78 79 #else /* CONFIG_T4240EMU */ 80 static const struct board_specific_parameters udimm0[] = { 81 /* 82 * memory controller 0 83 * num| hi| rank| clk| wrlvl | wrlvl | wrlvl | cpo |wrdata|2T 84 * ranks| mhz| GB |adjst| start | ctl2 | ctl3 | |delay | 85 */ 86 {2, 2140, 0, 4, 8, 0x0, 0x0, 0xff, 2, 0}, 87 {1, 2140, 0, 4, 8, 0x0, 0x0, 0xff, 2, 0}, 88 {} 89 }; 90 91 static const struct board_specific_parameters rdimm0[] = { 92 /* 93 * memory controller 0 94 * num| hi| rank| clk| wrlvl | wrlvl | wrlvl | cpo |wrdata|2T 95 * ranks| mhz| GB |adjst| start | ctl2 | ctl3 | |delay | 96 */ 97 {4, 2140, 0, 5, 8, 0x0, 0x0, 0xff, 2, 0}, 98 {2, 2140, 0, 5, 8, 0x0, 0x0, 0xff, 2, 0}, 99 {1, 2140, 0, 4, 8, 0x0, 0x0, 0xff, 2, 0}, 100 {} 101 }; 102 #endif /* CONFIG_T4240EMU */ 103 104 /* 105 * The three slots have slightly different timing. The center values are good 106 * for all slots. We use identical speed tables for them. In future use, if 107 * DIMMs require separated tables, make more entries as needed. 108 */ 109 static const struct board_specific_parameters *udimms[] = { 110 udimm0, 111 }; 112 113 /* 114 * The three slots have slightly different timing. See comments above. 115 */ 116 static const struct board_specific_parameters *rdimms[] = { 117 rdimm0, 118 }; 119 120 121 #endif 122