1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Copyright 2014 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 static const struct board_specific_parameters udimm0[] = { 24 /* 25 * memory controller 0 26 * num| hi| rank| clk| wrlvl | wrlvl | wrlvl 27 * ranks| mhz| GB |adjst| start | ctl2 | ctl3 28 */ 29 {2, 1350, 4, 8, 8, 0x0809090b, 0x0c0c0d0a}, 30 {2, 1350, 0, 10, 7, 0x0709090b, 0x0c0c0d09}, 31 {2, 1666, 4, 8, 8, 0x080a0a0d, 0x0d10100b}, 32 {2, 1666, 0, 10, 7, 0x080a0a0c, 0x0d0d0e0a}, 33 {2, 1900, 0, 8, 8, 0x090a0b0e, 0x0f11120c}, 34 {2, 2140, 0, 8, 8, 0x090a0b0e, 0x0f11120c}, 35 {1, 1350, 0, 10, 8, 0x0809090b, 0x0c0c0d0a}, 36 {1, 1700, 0, 10, 8, 0x080a0a0c, 0x0c0d0e0a}, 37 {1, 1900, 0, 8, 8, 0x080a0a0c, 0x0e0e0f0a}, 38 {1, 2140, 0, 8, 8, 0x090a0b0c, 0x0e0f100b}, 39 {} 40 }; 41 42 static const struct board_specific_parameters rdimm0[] = { 43 /* 44 * memory controller 0 45 * num| hi| rank| clk| wrlvl | wrlvl | wrlvl 46 * ranks| mhz| GB |adjst| start | ctl2 | ctl3 47 */ 48 {4, 1350, 0, 10, 9, 0x08070605, 0x06070806}, 49 {4, 1666, 0, 10, 11, 0x0a080706, 0x07090906}, 50 {4, 2140, 0, 10, 12, 0x0b090807, 0x080a0b07}, 51 {2, 1350, 0, 10, 9, 0x08070605, 0x06070806}, 52 {2, 1666, 0, 10, 11, 0x0a090806, 0x08090a06}, 53 {2, 2140, 0, 10, 12, 0x0b090807, 0x080a0b07}, 54 {1, 1350, 0, 10, 9, 0x08070605, 0x06070806}, 55 {1, 1666, 0, 10, 11, 0x0a090806, 0x08090a06}, 56 {1, 2140, 0, 8, 12, 0x0b090807, 0x080a0b07}, 57 {} 58 }; 59 60 /* 61 * The three slots have slightly different timing. The center values are good 62 * for all slots. We use identical speed tables for them. In future use, if 63 * DIMMs require separated tables, make more entries as needed. 64 */ 65 static const struct board_specific_parameters *udimms[] = { 66 udimm0, 67 }; 68 69 /* 70 * The three slots have slightly different timing. See comments above. 71 */ 72 static const struct board_specific_parameters *rdimms[] = { 73 rdimm0, 74 }; 75 76 77 #endif 78
