Before programming the SDRAM mode registers, mode register update mode must be
selected by setting the MRS bit and clearing INIT in GlConfig
Signed-off-by: Matthias Kaehlcke <matthias@xxxxxxxxxxxx>
---
board/edb93xx/sdram_cfg.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/board/edb93xx/sdram_cfg.c b/board/edb93xx/sdram_cfg.c
index 9f56f72..25b214b 100644
--- a/board/edb93xx/sdram_cfg.c
+++ b/board/edb93xx/sdram_cfg.c
@@ -111,6 +111,11 @@ static void setup_refresh_timer(void)
static void program_mode_registers(void)
{
+ struct sdram_regs *sdram = (struct sdram_regs *)SDRAM_BASE;
+
+ /* Select mode register update mode */
+ writel(GLCONFIG_MRS | GLCONFIG_CKE, &sdram->glconfig);
+
PROGRAM_MODE_REG(0);
#if (CONFIG_EP93XX_SDRAM_NUM_BANKS >= 2)
--
1.6.5
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