diff options
author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2019-06-03 11:12:32 +0300 |
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committer | Olof Johansson <olof@lixom.net> | 2019-06-17 14:45:17 +0300 |
commit | 7b43b8fdc9a6283c0b9405542c4406cfa1e5689a (patch) | |
tree | 0f7636ea8a4d75a61e3436adcac92ba82a542be6 /lib/jedec_ddr_data.c | |
parent | c9727db7cc1da03ea4247010e47597c617ee2176 (diff) | |
download | linux-7b43b8fdc9a6283c0b9405542c4406cfa1e5689a.tar.xz |
memory: move jedec_ddr_data.c from lib/ to drivers/memory/
jedec_ddr_data.c exports 3 symbols, and all of them are only
referenced from drivers/memory/{emif.c,of_memory.c}
drivers/memory/ is a better location than lib/.
I removed the Kconfig prompt "JEDEC DDR data" because it is only
select'ed by TI_EMIF, and there is no other user. There is no good
reason in making it a user-configurable CONFIG option.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'lib/jedec_ddr_data.c')
-rw-r--r-- | lib/jedec_ddr_data.c | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/lib/jedec_ddr_data.c b/lib/jedec_ddr_data.c deleted file mode 100644 index 6d2cbf1d567f..000000000000 --- a/lib/jedec_ddr_data.c +++ /dev/null @@ -1,135 +0,0 @@ -/* - * DDR addressing details and AC timing parameters from JEDEC specs - * - * Copyright (C) 2012 Texas Instruments, Inc. - * - * Aneesh V <aneesh@ti.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <memory/jedec_ddr.h> -#include <linux/module.h> - -/* LPDDR2 addressing details from JESD209-2 section 2.4 */ -const struct lpddr2_addressing - lpddr2_jedec_addressing_table[NUM_DDR_ADDR_TABLE_ENTRIES] = { - {B4, T_REFI_15_6, T_RFC_90}, /* 64M */ - {B4, T_REFI_15_6, T_RFC_90}, /* 128M */ - {B4, T_REFI_7_8, T_RFC_90}, /* 256M */ - {B4, T_REFI_7_8, T_RFC_90}, /* 512M */ - {B8, T_REFI_7_8, T_RFC_130}, /* 1GS4 */ - {B8, T_REFI_3_9, T_RFC_130}, /* 2GS4 */ - {B8, T_REFI_3_9, T_RFC_130}, /* 4G */ - {B8, T_REFI_3_9, T_RFC_210}, /* 8G */ - {B4, T_REFI_7_8, T_RFC_130}, /* 1GS2 */ - {B4, T_REFI_3_9, T_RFC_130}, /* 2GS2 */ -}; -EXPORT_SYMBOL_GPL(lpddr2_jedec_addressing_table); - -/* LPDDR2 AC timing parameters from JESD209-2 section 12 */ -const struct lpddr2_timings - lpddr2_jedec_timings[NUM_DDR_TIMING_TABLE_ENTRIES] = { - /* Speed bin 400(200 MHz) */ - [0] = { - .max_freq = 200000000, - .min_freq = 10000000, - .tRPab = 21000, - .tRCD = 18000, - .tWR = 15000, - .tRAS_min = 42000, - .tRRD = 10000, - .tWTR = 10000, - .tXP = 7500, - .tRTP = 7500, - .tCKESR = 15000, - .tDQSCK_max = 5500, - .tFAW = 50000, - .tZQCS = 90000, - .tZQCL = 360000, - .tZQinit = 1000000, - .tRAS_max_ns = 70000, - .tDQSCK_max_derated = 6000, - }, - /* Speed bin 533(266 MHz) */ - [1] = { - .max_freq = 266666666, - .min_freq = 10000000, - .tRPab = 21000, - .tRCD = 18000, - .tWR = 15000, - .tRAS_min = 42000, - .tRRD = 10000, - .tWTR = 7500, - .tXP = 7500, - .tRTP = 7500, - .tCKESR = 15000, - .tDQSCK_max = 5500, - .tFAW = 50000, - .tZQCS = 90000, - .tZQCL = 360000, - .tZQinit = 1000000, - .tRAS_max_ns = 70000, - .tDQSCK_max_derated = 6000, - }, - /* Speed bin 800(400 MHz) */ - [2] = { - .max_freq = 400000000, - .min_freq = 10000000, - .tRPab = 21000, - .tRCD = 18000, - .tWR = 15000, - .tRAS_min = 42000, - .tRRD = 10000, - .tWTR = 7500, - .tXP = 7500, - .tRTP = 7500, - .tCKESR = 15000, - .tDQSCK_max = 5500, - .tFAW = 50000, - .tZQCS = 90000, - .tZQCL = 360000, - .tZQinit = 1000000, - .tRAS_max_ns = 70000, - .tDQSCK_max_derated = 6000, - }, - /* Speed bin 1066(533 MHz) */ - [3] = { - .max_freq = 533333333, - .min_freq = 10000000, - .tRPab = 21000, - .tRCD = 18000, - .tWR = 15000, - .tRAS_min = 42000, - .tRRD = 10000, - .tWTR = 7500, - .tXP = 7500, - .tRTP = 7500, - .tCKESR = 15000, - .tDQSCK_max = 5500, - .tFAW = 50000, - .tZQCS = 90000, - .tZQCL = 360000, - .tZQinit = 1000000, - .tRAS_max_ns = 70000, - .tDQSCK_max_derated = 5620, - }, -}; -EXPORT_SYMBOL_GPL(lpddr2_jedec_timings); - -const struct lpddr2_min_tck lpddr2_jedec_min_tck = { - .tRPab = 3, - .tRCD = 3, - .tWR = 3, - .tRASmin = 3, - .tRRD = 2, - .tWTR = 2, - .tXP = 2, - .tRTP = 2, - .tCKE = 3, - .tCKESR = 3, - .tFAW = 8 -}; -EXPORT_SYMBOL_GPL(lpddr2_jedec_min_tck); |