summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--arch/arm/mach-omap2/Makefile6
-rw-r--r--arch/arm/mach-omap2/clock24xx.c23
-rw-r--r--arch/arm/mach-omap2/io.c2
-rw-r--r--arch/arm/mach-omap2/sdrc.c57
-rw-r--r--arch/arm/mach-omap2/sdrc2xxx.c67
-rw-r--r--arch/arm/plat-omap/common.c2
-rw-r--r--arch/arm/plat-omap/include/mach/common.h2
-rw-r--r--arch/arm/plat-omap/include/mach/sdrc.h37
8 files changed, 115 insertions, 81 deletions
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index bb47d43af39..9717afcdbda 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -3,7 +3,7 @@
#
# Common support
-obj-y := irq.o id.o io.o sdrc2xxx.o control.o prcm.o clock.o mux.o \
+obj-y := irq.o id.o io.o sdrc.o control.o prcm.o clock.o mux.o \
devices.o serial.o gpmc.o timer-gp.o powerdomain.o \
clockdomain.o
@@ -14,6 +14,10 @@ obj-$(CONFIG_ARCH_OMAP2420) += sram242x.o
obj-$(CONFIG_ARCH_OMAP2430) += sram243x.o
obj-$(CONFIG_ARCH_OMAP3) += sram34xx.o
+# SMS/SDRC
+obj-$(CONFIG_ARCH_OMAP2) += sdrc2xxx.o
+# obj-$(CONFIG_ARCH_OMAP3) += sdrc3xxx.o
+
# Power Management
ifeq ($(CONFIG_PM),y)
obj-y += pm.o
diff --git a/arch/arm/mach-omap2/clock24xx.c b/arch/arm/mach-omap2/clock24xx.c
index 83911ad4873..a11e7c71177 100644
--- a/arch/arm/mach-omap2/clock24xx.c
+++ b/arch/arm/mach-omap2/clock24xx.c
@@ -389,9 +389,9 @@ static int omap2_reprogram_dpllcore(struct clk *clk, unsigned long rate)
mult &= OMAP24XX_CORE_CLK_SRC_MASK;
if ((rate == (cur_rate / 2)) && (mult == 2)) {
- omap2_reprogram_sdrc(CORE_CLK_SRC_DPLL, 1);
+ omap2xxx_sdrc_reprogram(CORE_CLK_SRC_DPLL, 1);
} else if ((rate == (cur_rate * 2)) && (mult == 1)) {
- omap2_reprogram_sdrc(CORE_CLK_SRC_DPLL_X2, 1);
+ omap2xxx_sdrc_reprogram(CORE_CLK_SRC_DPLL_X2, 1);
} else if (rate != cur_rate) {
valid_rate = omap2_dpllcore_round_rate(rate);
if (valid_rate != rate)
@@ -430,15 +430,16 @@ static int omap2_reprogram_dpllcore(struct clk *clk, unsigned long rate)
if (rate == curr_prcm_set->xtal_speed) /* If asking for 1-1 */
bypass = 1;
- omap2_reprogram_sdrc(CORE_CLK_SRC_DPLL_X2, 1); /* For init_mem */
+ /* For omap2xxx_sdrc_init_params() */
+ omap2xxx_sdrc_reprogram(CORE_CLK_SRC_DPLL_X2, 1);
/* Force dll lock mode */
omap2_set_prcm(tmpset.cm_clksel1_pll, tmpset.base_sdrc_rfr,
bypass);
/* Errata: ret dll entry state */
- omap2_init_memory_params(omap2_dll_force_needed());
- omap2_reprogram_sdrc(done_rate, 0);
+ omap2xxx_sdrc_init_params(omap2xxx_sdrc_dll_is_unlocked());
+ omap2xxx_sdrc_reprogram(done_rate, 0);
}
omap2_dpllcore_recalc(&dpll_ck);
ret = 0;
@@ -525,9 +526,9 @@ static int omap2_select_table_rate(struct clk *clk, unsigned long rate)
cur_rate = omap2_get_dpll_rate_24xx(&dpll_ck);
if (prcm->dpll_speed == cur_rate / 2) {
- omap2_reprogram_sdrc(CORE_CLK_SRC_DPLL, 1);
+ omap2xxx_sdrc_reprogram(CORE_CLK_SRC_DPLL, 1);
} else if (prcm->dpll_speed == cur_rate * 2) {
- omap2_reprogram_sdrc(CORE_CLK_SRC_DPLL_X2, 1);
+ omap2xxx_sdrc_reprogram(CORE_CLK_SRC_DPLL_X2, 1);
} else if (prcm->dpll_speed != cur_rate) {
local_irq_save(flags);
@@ -558,14 +559,14 @@ static int omap2_select_table_rate(struct clk *clk, unsigned long rate)
cm_write_mod_reg(prcm->cm_clksel_mdm,
OMAP2430_MDM_MOD, CM_CLKSEL);
- /* x2 to enter init_mem */
- omap2_reprogram_sdrc(CORE_CLK_SRC_DPLL_X2, 1);
+ /* x2 to enter omap2xxx_sdrc_init_params() */
+ omap2xxx_sdrc_reprogram(CORE_CLK_SRC_DPLL_X2, 1);
omap2_set_prcm(prcm->cm_clksel1_pll, prcm->base_sdrc_rfr,
bypass);
- omap2_init_memory_params(omap2_dll_force_needed());
- omap2_reprogram_sdrc(done_rate, 0);
+ omap2xxx_sdrc_init_params(omap2xxx_sdrc_dll_is_unlocked());
+ omap2xxx_sdrc_reprogram(done_rate, 0);
local_irq_restore(flags);
}
diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index 2b5f28a3c4b..3c1de3615eb 100644
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -201,6 +201,6 @@ void __init omap2_init_common_hw(void)
pwrdm_init(powerdomains_omap);
clkdm_init(clockdomains_omap, clkdm_pwrdm_autodeps);
omap2_clk_init();
- omap2_init_memory();
+ omap2_sdrc_init();
gpmc_init();
}
diff --git a/arch/arm/mach-omap2/sdrc.c b/arch/arm/mach-omap2/sdrc.c
new file mode 100644
index 00000000000..24b54d50b89
--- /dev/null
+++ b/arch/arm/mach-omap2/sdrc.c
@@ -0,0 +1,57 @@
+/*
+ * SMS/SDRC (SDRAM controller) common code for OMAP2/3
+ *
+ * Copyright (C) 2005, 2008 Texas Instruments Inc.
+ * Copyright (C) 2005, 2008 Nokia Corporation
+ *
+ * Tony Lindgren <tony@atomide.com>
+ * Paul Walmsley
+ * Richard Woodruff <r-woodruff2@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 <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/list.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+
+#include <mach/common.h>
+#include <mach/clock.h>
+#include <mach/sram.h>
+
+#include "prm.h"
+
+#include <mach/sdrc.h>
+#include "sdrc.h"
+
+void __iomem *omap2_sdrc_base;
+void __iomem *omap2_sms_base;
+
+void __init omap2_set_globals_sdrc(struct omap_globals *omap2_globals)
+{
+ omap2_sdrc_base = omap2_globals->sdrc;
+ omap2_sms_base = omap2_globals->sms;
+}
+
+/* turn on smart idle modes for SDRAM scheduler and controller */
+void __init omap2_sdrc_init(void)
+{
+ u32 l;
+
+ l = sms_read_reg(SMS_SYSCONFIG);
+ l &= ~(0x3 << 3);
+ l |= (0x2 << 3);
+ sms_write_reg(l, SMS_SYSCONFIG);
+
+ l = sdrc_read_reg(SDRC_SYSCONFIG);
+ l &= ~(0x3 << 3);
+ l |= (0x2 << 3);
+ sdrc_write_reg(l, SDRC_SYSCONFIG);
+}
diff --git a/arch/arm/mach-omap2/sdrc2xxx.c b/arch/arm/mach-omap2/sdrc2xxx.c
index 3e38aa4ea45..3a47aba2903 100644
--- a/arch/arm/mach-omap2/sdrc2xxx.c
+++ b/arch/arm/mach-omap2/sdrc2xxx.c
@@ -3,11 +3,12 @@
*
* SDRAM timing related functions for OMAP2xxx
*
- * Copyright (C) 2005 Texas Instruments Inc.
- * Richard Woodruff <r-woodruff2@ti.com>
+ * Copyright (C) 2005, 2008 Texas Instruments Inc.
+ * Copyright (C) 2005, 2008 Nokia Corporation
*
- * Copyright (C) 2005 Nokia Corporation
* Tony Lindgren <tony@atomide.com>
+ * Paul Walmsley
+ * Richard Woodruff <r-woodruff2@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
@@ -39,23 +40,20 @@
#define M_LOCK 1
-void __iomem *omap2_sdrc_base;
-void __iomem *omap2_sms_base;
-
static struct memory_timings mem_timings;
static u32 curr_perf_level = CORE_CLK_SRC_DPLL_X2;
-u32 omap2_memory_get_slow_dll_ctrl(void)
+static u32 omap2xxx_sdrc_get_slow_dll_ctrl(void)
{
return mem_timings.slow_dll_ctrl;
}
-u32 omap2_memory_get_fast_dll_ctrl(void)
+static u32 omap2xxx_sdrc_get_fast_dll_ctrl(void)
{
return mem_timings.fast_dll_ctrl;
}
-u32 omap2_memory_get_type(void)
+static u32 omap2xxx_sdrc_get_type(void)
{
return mem_timings.m_type;
}
@@ -64,7 +62,7 @@ u32 omap2_memory_get_type(void)
* Check the DLL lock state, and return tue if running in unlock mode.
* This is needed to compensate for the shifted DLL value in unlock mode.
*/
-u32 omap2_dll_force_needed(void)
+u32 omap2xxx_sdrc_dll_is_unlocked(void)
{
/* dlla and dllb are a set */
u32 dll_state = sdrc_read_reg(SDRC_DLLA_CTRL);
@@ -79,8 +77,10 @@ u32 omap2_dll_force_needed(void)
* 'level' is the value to store to CM_CLKSEL2_PLL.CORE_CLK_SRC.
* Practical values are CORE_CLK_SRC_DPLL (for CORE_CLK = DPLL_CLK) or
* CORE_CLK_SRC_DPLL_X2 (for CORE_CLK = * DPLL_CLK * 2)
+ *
+ * Used by the clock framework during CORE DPLL changes
*/
-u32 omap2_reprogram_sdrc(u32 level, u32 force)
+u32 omap2xxx_sdrc_reprogram(u32 level, u32 force)
{
u32 dll_ctrl, m_type;
u32 prev = curr_perf_level;
@@ -90,13 +90,13 @@ u32 omap2_reprogram_sdrc(u32 level, u32 force)
return prev;
if (level == CORE_CLK_SRC_DPLL)
- dll_ctrl = omap2_memory_get_slow_dll_ctrl();
+ dll_ctrl = omap2xxx_sdrc_get_slow_dll_ctrl();
else if (level == CORE_CLK_SRC_DPLL_X2)
- dll_ctrl = omap2_memory_get_fast_dll_ctrl();
+ dll_ctrl = omap2xxx_sdrc_get_fast_dll_ctrl();
else
return prev;
- m_type = omap2_memory_get_type();
+ m_type = omap2xxx_sdrc_get_type();
local_irq_save(flags);
__raw_writel(0xffff, OMAP24XX_PRCM_VOLTSETUP);
@@ -107,18 +107,8 @@ u32 omap2_reprogram_sdrc(u32 level, u32 force)
return prev;
}
-#if !defined(CONFIG_ARCH_OMAP2)
-void omap2_sram_ddr_init(u32 *slow_dll_ctrl, u32 fast_dll_ctrl,
- u32 base_cs, u32 force_unlock)
-{
-}
-void omap2_sram_reprogram_sdrc(u32 perf_level, u32 dll_val,
- u32 mem_type)
-{
-}
-#endif
-
-void omap2_init_memory_params(u32 force_lock_to_unlock_mode)
+/* Used by the clock framework during CORE DPLL changes */
+void omap2xxx_sdrc_init_params(u32 force_lock_to_unlock_mode)
{
unsigned long dll_cnt;
u32 fast_dll = 0;
@@ -171,28 +161,3 @@ void omap2_init_memory_params(u32 force_lock_to_unlock_mode)
/* 90 degree phase for anything below 133Mhz + disable DLL filter */
mem_timings.slow_dll_ctrl |= ((1 << 1) | (3 << 8));
}
-
-void __init omap2_set_globals_memory(struct omap_globals *omap2_globals)
-{
- omap2_sdrc_base = omap2_globals->sdrc;
- omap2_sms_base = omap2_globals->sms;
-}
-
-/* turn on smart idle modes for SDRAM scheduler and controller */
-void __init omap2_init_memory(void)
-{
- u32 l;
-
- if (!cpu_is_omap2420())
- return;
-
- l = sms_read_reg(SMS_SYSCONFIG);
- l &= ~(0x3 << 3);
- l |= (0x2 << 3);
- sms_write_reg(l, SMS_SYSCONFIG);
-
- l = sdrc_read_reg(SDRC_SYSCONFIG);
- l &= ~(0x3 << 3);
- l |= (0x2 << 3);
- sdrc_write_reg(l, SDRC_SYSCONFIG);
-}
diff --git a/arch/arm/plat-omap/common.c b/arch/arm/plat-omap/common.c
index 0843b8882f9..187239c054c 100644
--- a/arch/arm/plat-omap/common.c
+++ b/arch/arm/plat-omap/common.c
@@ -249,7 +249,7 @@ static struct omap_globals *omap2_globals;
static void __init __omap2_set_globals(void)
{
omap2_set_globals_tap(omap2_globals);
- omap2_set_globals_memory(omap2_globals);
+ omap2_set_globals_sdrc(omap2_globals);
omap2_set_globals_control(omap2_globals);
omap2_set_globals_prcm(omap2_globals);
}
diff --git a/arch/arm/plat-omap/include/mach/common.h b/arch/arm/plat-omap/include/mach/common.h
index ef70e2b0f05..f3444a66a57 100644
--- a/arch/arm/plat-omap/include/mach/common.h
+++ b/arch/arm/plat-omap/include/mach/common.h
@@ -65,7 +65,7 @@ void omap2_set_globals_343x(void);
/* These get called from omap2_set_globals_xxxx(), do not call these */
void omap2_set_globals_tap(struct omap_globals *);
-void omap2_set_globals_memory(struct omap_globals *);
+void omap2_set_globals_sdrc(struct omap_globals *);
void omap2_set_globals_control(struct omap_globals *);
void omap2_set_globals_prcm(struct omap_globals *);
diff --git a/arch/arm/plat-omap/include/mach/sdrc.h b/arch/arm/plat-omap/include/mach/sdrc.h
index c905b5268e5..8e0740eb83f 100644
--- a/arch/arm/plat-omap/include/mach/sdrc.h
+++ b/arch/arm/plat-omap/include/mach/sdrc.h
@@ -4,10 +4,12 @@
/*
* OMAP2/3 SDRC/SMS register definitions
*
- * Copyright (C) 2007 Texas Instruments, Inc.
- * Copyright (C) 2007 Nokia Corporation
+ * Copyright (C) 2007-2008 Texas Instruments, Inc.
+ * Copyright (C) 2007-2008 Nokia Corporation
*
- * Written by Paul Walmsley
+ * Tony Lindgren
+ * Paul Walmsley
+ * Richard Woodruff
*
* 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
@@ -64,18 +66,25 @@
* SMS register access
*/
-
-#define OMAP242X_SMS_REGADDR(reg) IO_ADDRESS(OMAP2420_SMS_BASE + reg)
-#define OMAP243X_SMS_REGADDR(reg) IO_ADDRESS(OMAP243X_SMS_BASE + reg)
-#define OMAP343X_SMS_REGADDR(reg) IO_ADDRESS(OMAP343X_SMS_BASE + reg)
+#define OMAP242X_SMS_REGADDR(reg) \
+ (void __iomem *)IO_ADDRESS(OMAP2420_SMS_BASE + reg)
+#define OMAP243X_SMS_REGADDR(reg) \
+ (void __iomem *)IO_ADDRESS(OMAP243X_SMS_BASE + reg)
+#define OMAP343X_SMS_REGADDR(reg) \
+ (void __iomem *)IO_ADDRESS(OMAP343X_SMS_BASE + reg)
/* SMS register offsets - read/write with sms_{read,write}_reg() */
#define SMS_SYSCONFIG 0x010
/* REVISIT: fill in other SMS registers here */
+
#ifndef __ASSEMBLER__
+void __init omap2_sdrc_init(void);
+
+#ifdef CONFIG_ARCH_OMAP2
+
struct memory_timings {
u32 m_type; /* ddr = 1, sdr = 0 */
u32 dll_mode; /* use lock mode = 1, unlock mode = 0 */
@@ -84,15 +93,13 @@ struct memory_timings {
u32 base_cs; /* base chip select to use for calculations */
};
-extern void omap2_init_memory_params(u32 force_lock_to_unlock_mode);
-extern u32 omap2_memory_get_slow_dll_ctrl(void);
-extern u32 omap2_memory_get_fast_dll_ctrl(void);
-extern u32 omap2_memory_get_type(void);
-u32 omap2_dll_force_needed(void);
-u32 omap2_reprogram_sdrc(u32 level, u32 force);
-void __init omap2_init_memory(void);
+extern void omap2xxx_sdrc_init_params(u32 force_lock_to_unlock_mode);
-#endif
+u32 omap2xxx_sdrc_dll_is_unlocked(void);
+u32 omap2xxx_sdrc_reprogram(u32 level, u32 force);
+
+#endif /* CONFIG_ARCH_OMAP2 */
+#endif /* __ASSEMBLER__ */
#endif
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-12 13:20:29 +0000