From 10e7e36daf1cfea24961100d3bd0f3e928fb6155 Mon Sep 17 00:00:00 2001
From: Tom Rini <trini@ti.com>
Date: Thu, 26 Jul 2012 07:49:23 -0700
Subject: [PATCH] am33xx: Rework DDR2 EMIF initalization slightly
With the previous bugfix we now don't need to set two different REF_CTRL
values and instead set the final value.
Signed-off-by: Tom Rini <trini@ti.com>
---
arch/arm/cpu/armv7/am33xx/emif4.c | 17 ++---------------
1 file changed, 2 insertions(+), 15 deletions(-)
diff --git a/arch/arm/cpu/armv7/am33xx/emif4.c b/arch/arm/cpu/armv7/am33xx/emif4.c
index 2f4164df82..8f7aadc600 100644
--- a/arch/arm/cpu/armv7/am33xx/emif4.c
+++ b/arch/arm/cpu/armv7/am33xx/emif4.c
@@ -117,7 +117,6 @@ static void config_vtp(void)
static void config_emif_ddr2(void)
{
- int i;
int ret;
struct sdram_config cfg;
struct sdram_timing tmg;
@@ -137,31 +136,19 @@ static void config_emif_ddr2(void)
cfg.sdrcr = EMIF_SDCFG;
cfg.sdrcr2 = EMIF_SDCFG;
- cfg.refresh = 0x00004650;
- cfg.refresh_sh = 0x00004650;
+ cfg.refresh = EMIF_SDREF;
+ cfg.refresh_sh = EMIF_SDREF;
/* Program EMIF instance */
ret = config_ddr_phy(&phyc);
if (ret < 0)
printf("Couldn't configure phyc\n");
- ret = config_sdram(&cfg);
- if (ret < 0)
- printf("Couldn't configure SDRAM\n");
ret = set_sdram_timings(&tmg);
if (ret < 0)
printf("Couldn't configure timings\n");
- /* Delay */
- for (i = 0; i < 5000; i++)
- ;
-
- cfg.refresh = EMIF_SDREF;
- cfg.refresh_sh = EMIF_SDREF;
- cfg.sdrcr = EMIF_SDCFG;
- cfg.sdrcr2 = EMIF_SDCFG;
-
ret = config_sdram(&cfg);
if (ret < 0)
printf("Couldn't configure SDRAM\n");
--
2.39.5