2 * Timing and Organization details of the Elpida parts used in OMAP5
6 * Texas Instruments, <www.ti.com>
8 * Aneesh V <aneesh@ti.com>
9 * Sricharan R <r.sricharan@ti.com>
11 * See file CREDITS for list of people who contributed to this
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License as
16 * published by the Free Software Foundation; either version 2 of
17 * the License, or (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
31 #include <asm/arch/sys_proto.h>
34 * This file provides details of the LPDDR2 SDRAM parts used on OMAP5
35 * EVM. Since the parts used and geometry are identical for
36 * evm for a given OMAP5 revision, this information is kept
37 * here instead of being in board directory. However the key functions
38 * exported are weakly linked so that they can be over-ridden in the board
39 * directory if there is a OMAP5 board in the future that uses a different
40 * memory device or geometry.
42 * For any new board with different memory devices over-ride one or more
43 * of the following functions as per the CONFIG flags you intend to enable:
44 * - emif_get_reg_dump()
45 * - emif_get_dmm_regs()
46 * - emif_get_device_details()
47 * - emif_get_device_timings()
50 #ifdef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS
52 const struct emif_regs emif_regs_elpida_532_mhz_1cs = {
53 .sdram_config_init = 0x80801aB2,
54 .sdram_config = 0x808022B2,
55 .ref_ctrl = 0x0000081A,
56 .sdram_tim1 = 0x772F6873,
57 .sdram_tim2 = 0x304A129A,
58 .sdram_tim3 = 0x02F7E45F,
59 .read_idle_ctrl = 0x00050000,
60 .zq_config = 0x000B3215,
61 .temp_alert_config = 0x08000A05,
62 .emif_ddr_phy_ctlr_1_init = 0x0E38200D,
63 .emif_ddr_phy_ctlr_1 = 0x0E38200D
66 const struct dmm_lisa_map_regs lisa_map_4G_x_1_x_2 = {
67 .dmm_lisa_map_0 = 0xFF020100,
70 .dmm_lisa_map_3 = 0x80640300
73 static void emif_get_reg_dump_sdp(u32 emif_nr, const struct emif_regs **regs)
75 *regs = &emif_regs_elpida_532_mhz_1cs;
77 void emif_get_reg_dump(u32 emif_nr, const struct emif_regs **regs)
78 __attribute__((weak, alias("emif_get_reg_dump_sdp")));
80 static void emif_get_dmm_regs_sdp(const struct dmm_lisa_map_regs
83 *dmm_lisa_regs = &lisa_map_4G_x_1_x_2;
86 void emif_get_dmm_regs(const struct dmm_lisa_map_regs **dmm_lisa_regs)
87 __attribute__((weak, alias("emif_get_dmm_regs_sdp")));
91 static const struct lpddr2_device_details elpida_4G_S4_details = {
92 .type = LPDDR2_TYPE_S4,
93 .density = LPDDR2_DENSITY_4Gb,
94 .io_width = LPDDR2_IO_WIDTH_32,
95 .manufacturer = LPDDR2_MANUFACTURER_ELPIDA
98 static void emif_get_device_details_sdp(u32 emif_nr,
99 struct lpddr2_device_details *cs0_device_details,
100 struct lpddr2_device_details *cs1_device_details)
102 /* EMIF1 & EMIF2 have identical configuration */
103 *cs0_device_details = elpida_4G_S4_details;
105 /* Nothing is conected on cs1 */
106 cs1_device_details = NULL;
109 void emif_get_device_details(u32 emif_nr,
110 struct lpddr2_device_details *cs0_device_details,
111 struct lpddr2_device_details *cs1_device_details)
112 __attribute__((weak, alias("emif_get_device_details_sdp")));
114 #endif /* CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS */
116 #ifndef CONFIG_SYS_DEFAULT_LPDDR2_TIMINGS
117 static const struct lpddr2_ac_timings timings_jedec_532_mhz = {
118 .max_freq = 532000000,
140 static const struct lpddr2_min_tck min_tck_elpida = {
155 static const struct lpddr2_ac_timings *elpida_ac_timings[MAX_NUM_SPEEDBINS] = {
156 &timings_jedec_532_mhz
159 static const struct lpddr2_device_timings elpida_4G_S4_timings = {
160 .ac_timings = elpida_ac_timings,
161 .min_tck = &min_tck_elpida,
164 void emif_get_device_timings_sdp(u32 emif_nr,
165 const struct lpddr2_device_timings **cs0_device_timings,
166 const struct lpddr2_device_timings **cs1_device_timings)
168 /* Identical devices on EMIF1 & EMIF2 */
169 *cs0_device_timings = &elpida_4G_S4_timings;
170 *cs1_device_timings = NULL;
173 void emif_get_device_timings(u32 emif_nr,
174 const struct lpddr2_device_timings **cs0_device_timings,
175 const struct lpddr2_device_timings **cs1_device_timings)
176 __attribute__((weak, alias("emif_get_device_timings_sdp")));
178 #endif /* CONFIG_SYS_DEFAULT_LPDDR2_TIMINGS */