diff options
| author | Lokesh Vutla <lokeshvutla@ti.com> | 2012-05-22 00:03:25 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-07-07 14:07:24 +0200 |
| commit | 784ab7c545d25288a82216d18e2b0ca3beae470b (patch) | |
| tree | f2a631d64a5e279547eb0bbd64cf734a64dec28e /arch/arm/cpu/armv7/omap5/hwinit.c | |
| parent | 43037d76316db1a53be16a4c1ed97203257fa4ee (diff) | |
OMAP5: EMIF: Add support for DDR3 device
In OMAP5432 EMIF controlller supports DDR3 device.
This patch adds support for ddr3 device intialization and configuration.
Initialization sequence is done as specified in JEDEC specs.
This also adds support for ddr3 leveling.
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Diffstat (limited to 'arch/arm/cpu/armv7/omap5/hwinit.c')
| -rw-r--r-- | arch/arm/cpu/armv7/omap5/hwinit.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/omap5/hwinit.c b/arch/arm/cpu/armv7/omap5/hwinit.c index df0b76050d..d0c3ff7021 100644 --- a/arch/arm/cpu/armv7/omap5/hwinit.c +++ b/arch/arm/cpu/armv7/omap5/hwinit.c @@ -35,6 +35,7 @@ #include <asm/sizes.h> #include <asm/utils.h> #include <asm/arch/gpio.h> +#include <asm/emif.h> DECLARE_GLOBAL_DATA_PTR; @@ -203,6 +204,20 @@ void do_io_settings(void) } #endif +void config_data_eye_leveling_samples(u32 emif_base) +{ + struct omap_sys_ctrl_regs *ioregs_base = + (struct omap_sys_ctrl_regs *) SYSCTRL_GENERAL_CORE_BASE; + + /*EMIF_SDRAM_CONFIG_EXT-Read data eye leveling no of samples =4*/ + if (emif_base == EMIF1_BASE) + writel(SDRAM_CONFIG_EXT_RD_LVL_4_SAMPLES, + &(ioregs_base->control_emif1_sdram_config_ext)); + else if (emif_base == EMIF2_BASE) + writel(SDRAM_CONFIG_EXT_RD_LVL_4_SAMPLES, + &(ioregs_base->control_emif2_sdram_config_ext)); +} + void init_omap_revision(void) { /* |