aboutsummaryrefslogtreecommitdiff
path: root/arch/arm
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/mach-omap2/board-2430sdp.c2
-rw-r--r--arch/arm/mach-omap2/board-apollon.c2
-rw-r--r--arch/arm/mach-omap2/board-generic.c2
-rw-r--r--arch/arm/mach-omap2/board-h4.c2
-rw-r--r--arch/arm/mach-omap2/board-ldp.c2
-rw-r--r--arch/arm/mach-omap2/board-omap3beagle.c2
-rw-r--r--arch/arm/mach-omap2/io.c4
-rw-r--r--arch/arm/mach-omap2/sdrc.c38
-rw-r--r--arch/arm/plat-omap/include/mach/io.h4
-rw-r--r--arch/arm/plat-omap/include/mach/sdrc.h24
10 files changed, 71 insertions, 11 deletions
diff --git a/arch/arm/mach-omap2/board-2430sdp.c b/arch/arm/mach-omap2/board-2430sdp.c
index 83fa37211d77..7b29e1d00f23 100644
--- a/arch/arm/mach-omap2/board-2430sdp.c
+++ b/arch/arm/mach-omap2/board-2430sdp.c
@@ -185,7 +185,7 @@ out:
static void __init omap_2430sdp_init_irq(void)
{
- omap2_init_common_hw();
+ omap2_init_common_hw(NULL);
omap_init_irq();
omap_gpio_init();
sdp2430_init_smc91x();
diff --git a/arch/arm/mach-omap2/board-apollon.c b/arch/arm/mach-omap2/board-apollon.c
index 0a7b24ba1652..0c911f414d8d 100644
--- a/arch/arm/mach-omap2/board-apollon.c
+++ b/arch/arm/mach-omap2/board-apollon.c
@@ -249,7 +249,7 @@ out:
static void __init omap_apollon_init_irq(void)
{
- omap2_init_common_hw();
+ omap2_init_common_hw(NULL);
omap_init_irq();
omap_gpio_init();
apollon_init_smc91x();
diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c
index 3b34c20d1df4..3492162a65c3 100644
--- a/arch/arm/mach-omap2/board-generic.c
+++ b/arch/arm/mach-omap2/board-generic.c
@@ -33,7 +33,7 @@
static void __init omap_generic_init_irq(void)
{
- omap2_init_common_hw();
+ omap2_init_common_hw(NULL);
omap_init_irq();
}
diff --git a/arch/arm/mach-omap2/board-h4.c b/arch/arm/mach-omap2/board-h4.c
index 5e9b14675b1e..ef55b45ab769 100644
--- a/arch/arm/mach-omap2/board-h4.c
+++ b/arch/arm/mach-omap2/board-h4.c
@@ -363,7 +363,7 @@ static void __init h4_init_flash(void)
static void __init omap_h4_init_irq(void)
{
- omap2_init_common_hw();
+ omap2_init_common_hw(NULL);
omap_init_irq();
omap_gpio_init();
h4_init_flash();
diff --git a/arch/arm/mach-omap2/board-ldp.c b/arch/arm/mach-omap2/board-ldp.c
index f6a13451d1fd..61f7c365a28c 100644
--- a/arch/arm/mach-omap2/board-ldp.c
+++ b/arch/arm/mach-omap2/board-ldp.c
@@ -98,7 +98,7 @@ static inline void __init ldp_init_smc911x(void)
static void __init omap_ldp_init_irq(void)
{
- omap2_init_common_hw();
+ omap2_init_common_hw(NULL);
omap_init_irq();
omap_gpio_init();
ldp_init_smc911x();
diff --git a/arch/arm/mach-omap2/board-omap3beagle.c b/arch/arm/mach-omap2/board-omap3beagle.c
index 38c88fbe658d..ad312ccf2ec5 100644
--- a/arch/arm/mach-omap2/board-omap3beagle.c
+++ b/arch/arm/mach-omap2/board-omap3beagle.c
@@ -184,7 +184,7 @@ static int __init omap3_beagle_i2c_init(void)
static void __init omap3_beagle_init_irq(void)
{
- omap2_init_common_hw();
+ omap2_init_common_hw(NULL);
omap_init_irq();
omap_gpio_init();
}
diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index 3c1de3615eb8..916fcd3a2328 100644
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -195,12 +195,12 @@ void __init omap2_map_common_io(void)
omapfb_reserve_sdram();
}
-void __init omap2_init_common_hw(void)
+void __init omap2_init_common_hw(struct omap_sdrc_params *sp)
{
omap2_mux_init();
pwrdm_init(powerdomains_omap);
clkdm_init(clockdomains_omap, clkdm_pwrdm_autodeps);
omap2_clk_init();
- omap2_sdrc_init();
+ omap2_sdrc_init(sp);
gpmc_init();
}
diff --git a/arch/arm/mach-omap2/sdrc.c b/arch/arm/mach-omap2/sdrc.c
index 24b54d50b893..2a30060cb4b7 100644
--- a/arch/arm/mach-omap2/sdrc.c
+++ b/arch/arm/mach-omap2/sdrc.c
@@ -12,6 +12,7 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
+#undef DEBUG
#include <linux/module.h>
#include <linux/kernel.h>
@@ -31,9 +32,42 @@
#include <mach/sdrc.h>
#include "sdrc.h"
+static struct omap_sdrc_params *sdrc_init_params;
+
void __iomem *omap2_sdrc_base;
void __iomem *omap2_sms_base;
+
+/**
+ * omap2_sdrc_get_params - return SDRC register values for a given clock rate
+ * @r: SDRC clock rate (in Hz)
+ *
+ * Return pre-calculated values for the SDRC_ACTIM_CTRLA,
+ * SDRC_ACTIM_CTRLB, SDRC_RFR_CTRL, and SDRC_MR registers, for a given
+ * SDRC clock rate 'r'. These parameters control various timing
+ * delays in the SDRAM controller that are expressed in terms of the
+ * number of SDRC clock cycles to wait; hence the clock rate
+ * dependency. Note that sdrc_init_params must be sorted rate
+ * descending. Also assumes that both chip-selects use the same
+ * timing parameters. Returns a struct omap_sdrc_params * upon
+ * success, or NULL upon failure.
+ */
+struct omap_sdrc_params *omap2_sdrc_get_params(unsigned long r)
+{
+ struct omap_sdrc_params *sp;
+
+ sp = sdrc_init_params;
+
+ while (sp->rate != r)
+ sp++;
+
+ if (!sp->rate)
+ return NULL;
+
+ return sp;
+}
+
+
void __init omap2_set_globals_sdrc(struct omap_globals *omap2_globals)
{
omap2_sdrc_base = omap2_globals->sdrc;
@@ -41,7 +75,7 @@ void __init omap2_set_globals_sdrc(struct omap_globals *omap2_globals)
}
/* turn on smart idle modes for SDRAM scheduler and controller */
-void __init omap2_sdrc_init(void)
+void __init omap2_sdrc_init(struct omap_sdrc_params *sp)
{
u32 l;
@@ -54,4 +88,6 @@ void __init omap2_sdrc_init(void)
l &= ~(0x3 << 3);
l |= (0x2 << 3);
sdrc_write_reg(l, SDRC_SYSCONFIG);
+
+ sdrc_init_params = sp;
}
diff --git a/arch/arm/plat-omap/include/mach/io.h b/arch/arm/plat-omap/include/mach/io.h
index d92bf7964481..0610d7e2b3d7 100644
--- a/arch/arm/plat-omap/include/mach/io.h
+++ b/arch/arm/plat-omap/include/mach/io.h
@@ -185,11 +185,13 @@
#define omap_writew(v,a) __raw_writew(v, IO_ADDRESS(a))
#define omap_writel(v,a) __raw_writel(v, IO_ADDRESS(a))
+struct omap_sdrc_params;
+
extern void omap1_map_common_io(void);
extern void omap1_init_common_hw(void);
extern void omap2_map_common_io(void);
-extern void omap2_init_common_hw(void);
+extern void omap2_init_common_hw(struct omap_sdrc_params *sp);
#define __arch_ioremap(p,s,t) omap_ioremap(p,s,t)
#define __arch_iounmap(v) omap_iounmap(v)
diff --git a/arch/arm/plat-omap/include/mach/sdrc.h b/arch/arm/plat-omap/include/mach/sdrc.h
index 8e0740eb83fb..adc73522491f 100644
--- a/arch/arm/plat-omap/include/mach/sdrc.h
+++ b/arch/arm/plat-omap/include/mach/sdrc.h
@@ -81,7 +81,29 @@
#ifndef __ASSEMBLER__
-void __init omap2_sdrc_init(void);
+/**
+ * struct omap_sdrc_params - SDRC parameters for a given SDRC clock rate
+ * @rate: SDRC clock rate (in Hz)
+ * @actim_ctrla: Value to program to SDRC_ACTIM_CTRLA for this rate
+ * @actim_ctrlb: Value to program to SDRC_ACTIM_CTRLB for this rate
+ * @rfr_ctrl: Value to program to SDRC_RFR_CTRL for this rate
+ * @mr: Value to program to SDRC_MR for this rate
+ *
+ * This structure holds a pre-computed set of register values for the
+ * SDRC for a given SDRC clock rate and SDRAM chip. These are
+ * intended to be pre-computed and specified in an array in the board-*.c
+ * files. The structure is keyed off the 'rate' field.
+ */
+struct omap_sdrc_params {
+ unsigned long rate;
+ u32 actim_ctrla;
+ u32 actim_ctrlb;
+ u32 rfr_ctrl;
+ u32 mr;
+};
+
+void __init omap2_sdrc_init(struct omap_sdrc_params *sp);
+struct omap_sdrc_params *omap2_sdrc_get_params(unsigned long r);
#ifdef CONFIG_ARCH_OMAP2
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 13:51:31 +0000