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authorMasahiro Yamada <yamada.masahiro@socionext.com>2019-06-03 17:12:32 +0900
committerOlof Johansson <olof@lixom.net>2019-06-17 04:45:17 -0700
commit7b43b8fdc9a6283c0b9405542c4406cfa1e5689a (patch)
tree0f7636ea8a4d75a61e3436adcac92ba82a542be6 /lib
parentc9727db7cc1da03ea4247010e47597c617ee2176 (diff)
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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')
-rw-r--r--lib/Kconfig8
-rw-r--r--lib/Makefile2
-rw-r--r--lib/jedec_ddr_data.c135
3 files changed, 0 insertions, 145 deletions
diff --git a/lib/Kconfig b/lib/Kconfig
index 90623a0e1942..e09b3e081a53 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -531,14 +531,6 @@ config LRU_CACHE
config CLZ_TAB
bool
-config DDR
- bool "JEDEC DDR data"
- help
- Data from JEDEC specs for DDR SDRAM memories,
- particularly the AC timing parameters and addressing
- information. This data is useful for drivers handling
- DDR SDRAM controllers.
-
config IRQ_POLL
bool "IRQ polling library"
help
diff --git a/lib/Makefile b/lib/Makefile
index fb7697031a79..cb66bc9c5b2f 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -206,8 +206,6 @@ obj-$(CONFIG_SIGNATURE) += digsig.o
lib-$(CONFIG_CLZ_TAB) += clz_tab.o
-obj-$(CONFIG_DDR) += jedec_ddr_data.o
-
obj-$(CONFIG_GENERIC_STRNCPY_FROM_USER) += strncpy_from_user.o
obj-$(CONFIG_GENERIC_STRNLEN_USER) += strnlen_user.o
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);