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, 4, 8, 0x0809090b, 0x0c0c0d0a}, 31 {2, 1350, 0, 5, 7, 0x0709090b, 0x0c0c0d09}, 32 {2, 1666, 4, 4, 8, 0x080a0a0d, 0x0d10100b}, 33 {2, 1666, 0, 5, 7, 0x080a0a0c, 0x0d0d0e0a}, 34 {2, 1900, 0, 4, 8, 0x090a0b0e, 0x0f11120c}, 35 {2, 2140, 0, 4, 8, 0x090a0b0e, 0x0f11120c}, 36 {1, 1350, 0, 5, 8, 0x0809090b, 0x0c0c0d0a}, 37 {1, 1700, 0, 5, 8, 0x080a0a0c, 0x0c0d0e0a}, 38 {1, 1900, 0, 4, 8, 0x080a0a0c, 0x0e0e0f0a}, 39 {1, 2140, 0, 4, 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, 5, 9, 0x08070605, 0x06070806}, 50 {4, 1666, 0, 5, 11, 0x0a080706, 0x07090906}, 51 {4, 2140, 0, 5, 12, 0x0b090807, 0x080a0b07}, 52 {2, 1350, 0, 5, 9, 0x08070605, 0x06070806}, 53 {2, 1666, 0, 5, 11, 0x0a090806, 0x08090a06}, 54 {2, 2140, 0, 5, 12, 0x0b090807, 0x080a0b07}, 55 {1, 1350, 0, 5, 9, 0x08070605, 0x06070806}, 56 {1, 1666, 0, 5, 11, 0x0a090806, 0x08090a06}, 57 {1, 2140, 0, 4, 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