sysmo-bts
/
u-boot
9
0
Fork 0
Code Pull Requests Releases Activity

mxs: SPL: Generalize memory initialization 

Use a generic 'dram_vals[]' array that has the full initialization
sequence and rename the initialization method so it doesn't has a
frequency on its name.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
This commit is contained in:
Otavio Salvador 2012-12-04 03:15:51 +00:00 committed by Stefano Babic
parent a918a53c36
commit 393ff47ba3
1 changed files with 13 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
View File

@ -30,7 +30,11 @@
#include "mxs_init.h"
static uint32_t mx28_dram_vals[] = {
static uint32_t dram_vals[] = {
/*
* i.MX28 DDR2 at 200MHz
*/
#if defined(CONFIG_MX28)
0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000, 0x00000000,
@ -79,6 +83,9 @@ static uint32_t mx28_dram_vals[] = {
0x06120612, 0x04320432, 0x04320432, 0x00040004,
0x00040004, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00010001
#else
#error Unsupported memory initialization
#endif
};
void __mxs_adjust_memory_params(uint32_t *dram_vals)
@ -87,14 +94,14 @@ void __mxs_adjust_memory_params(uint32_t *dram_vals)
void mxs_adjust_memory_params(uint32_t *dram_vals)
__attribute__((weak, alias("__mxs_adjust_memory_params")));
static void init_mx28_200mhz_ddr2(void)
static void initialize_dram_values(void)
{
int i;
mxs_adjust_memory_params(mx28_dram_vals);
mxs_adjust_memory_params(dram_vals);
for (i = 0; i < ARRAY_SIZE(mx28_dram_vals); i++)
writel(mx28_dram_vals[i], MXS_DRAM_BASE + (4 * i));
for (i = 0; i < ARRAY_SIZE(dram_vals); i++)
writel(dram_vals[i], MXS_DRAM_BASE + (4 * i));
}
static void mxs_mem_init_clock(void)
@ -218,7 +225,7 @@ void mxs_mem_init(void)
/* Clear START bit from DRAM_CTL16 */
clrbits_le32(MXS_DRAM_BASE + 0x40, 1);
init_mx28_200mhz_ddr2();
initialize_dram_values();
/* Clear SREFRESH bit from DRAM_CTL17 */
clrbits_le32(MXS_DRAM_BASE + 0x44, 1);