1 /* 2 * Copyright (C) 2017 Rockchip Electronics Co., Ltd. 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #ifndef _ASM_ARCH_SDRAM_COMMON_H 8 #define _ASM_ARCH_SDRAM_COMMON_H 9 /* 10 * sys_reg bitfield struct 11 * [31] row_3_4_ch1 12 * [30] row_3_4_ch0 13 * [29:28] chinfo 14 * [27] rank_ch1 15 * [26:25] col_ch1 16 * [24] bk_ch1 17 * [23:22] cs0_row_ch1 18 * [21:20] cs1_row_ch1 19 * [19:18] bw_ch1 20 * [17:16] dbw_ch1; 21 * [15:13] ddrtype 22 * [12] channelnum 23 * [11] rank_ch0 24 * [10:9] col_ch0 25 * [8] bk_ch0 26 * [7:6] cs0_row_ch0 27 * [5:4] cs1_row_ch0 28 * [3:2] bw_ch0 29 * [1:0] dbw_ch0 30 */ 31 #define SYS_REG_DDRTYPE_SHIFT 13 32 #define SYS_REG_DDRTYPE_MASK 7 33 #define SYS_REG_NUM_CH_SHIFT 12 34 #define SYS_REG_NUM_CH_MASK 1 35 #define SYS_REG_ROW_3_4_SHIFT(ch) (30 + (ch)) 36 #define SYS_REG_ROW_3_4_MASK 1 37 #define SYS_REG_CHINFO_SHIFT(ch) (28 + (ch)) 38 #define SYS_REG_RANK_SHIFT(ch) (11 + (ch) * 16) 39 #define SYS_REG_RANK_MASK 1 40 #define SYS_REG_COL_SHIFT(ch) (9 + (ch) * 16) 41 #define SYS_REG_COL_MASK 3 42 #define SYS_REG_BK_SHIFT(ch) (8 + (ch) * 16) 43 #define SYS_REG_BK_MASK 1 44 #define SYS_REG_CS0_ROW_SHIFT(ch) (6 + (ch) * 16) 45 #define SYS_REG_CS0_ROW_MASK 3 46 #define SYS_REG_CS1_ROW_SHIFT(ch) (4 + (ch) * 16) 47 #define SYS_REG_CS1_ROW_MASK 3 48 #define SYS_REG_BW_SHIFT(ch) (2 + (ch) * 16) 49 #define SYS_REG_BW_MASK 3 50 #define SYS_REG_DBW_SHIFT(ch) ((ch) * 16) 51 #define SYS_REG_DBW_MASK 3 52 53 /* Get sdram size decode from reg */ 54 size_t rockchip_sdram_size(phys_addr_t reg); 55 56 /* Called by U-Boot board_init_r for Rockchip SoCs */ 57 int dram_init(void); 58 #endif 59