DM8148 2GB DDR

Hello,

You could check these topics also:

BR

Margarita

Hello,

My uboot does detect 2gb of ddr ram, following is the log:

DRAM:  2 GiB
DCACHE:  Off
MMC:   OMAP SD/MMC: 0
Using default environment

Hit any key to stop autoboot:  0
reading u-boot.bin

But the linux kernel does not detect the 2GB are there are any changes in the linux kernel to be done to detect 2GB ?

Thanks And Regards,

Mike

Hello,

I have DDR3 (mt41k256M16HA) 16*8 banks,

My settings are:
/*
* TI814X PG1.0 DMM LISA MAPPING
* Two 256MB sections with 128-byte interleaved(hole in b/w)
*/
#define PG1_0_DMM_LISA_MAP__0 0x0
#define PG1_0_DMM_LISA_MAP__1 0x0
#define PG1_0_DMM_LISA_MAP__2 0x80440300
#define PG1_0_DMM_LISA_MAP__3 0xC0440300

/**
* Physical Memory Map
*/
#define CONFIG_NR_DRAM_BANKS 2 /* we have 2 banks of DRAM */
#define PHYS_DRAM_1 0x80000000 /* DRAM Bank #1 */
#define PHYS_DRAM_1_SIZE 0x40000000 /* 1 GB */
#define PHYS_DRAM_2 0xC0000000 /* DRAM Bank #2 */
#define PHYS_DRAM_2_SIZE 0x40000000 /* 1GB*/

Are these settings correct ?

Thanks And Regards,
Mike

/*
* TI814X PG2.1 DMM LISA MAPPING
* 1G contiguous section with 128-byte interleaving
*/
#define PG2_1_DMM_LISA_MAP__0 0x0
#define PG2_1_DMM_LISA_MAP__1 0x0
#define PG2_1_DMM_LISA_MAP__2 0x0
#define PG2_1_DMM_LISA_MAP__3 0x80640300

My bad above defs are used for ddr3.

I have 2 ddr3 banks, What are the LISA_MAP configs to be updated to mention it as 2GB ?

Any help appreciated.

Thanks And Regards,
Mike

Hello,

You need to update the following registers:

#define PG2_1_DMM_LISA_MAP__2 0x80640300
#define PG2_1_DMM_LISA_MAP__3 0xC0640320

Cheers,
--Prabhakar Lad

Hi,

I did try this, and set mem=1024M@0xC0000000 in bootargs this doesnt work, although setting mem=960M@0xC0000000 works.

Can anyone point me to why it doesn’t take entire 1GB ?

Thanks And Regards,
Mike