[U-Boot] [PATCH v2 02/10] mx23: Document the tRAS lockout setting in memory initialization
Otavio Salvador
otavio at ossystems.com.br
Mon Feb 11 14:35:48 CET 2013
Add a comment about the tRAS lockout setting of HW_DRAM_CTL08 to
enable the 'Fast Auto Pre-Charge' found in the memory chip. The
setting is applied after memory initialization and it is worth
document it.
Signed-off-by: Otavio Salvador <otavio at ossystems.com.br>
---
Changes in v2:
- Extend code comment to explicit say it needs to be there.
arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c b/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
index f8392f6..1952eac 100644
--- a/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
+++ b/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
@@ -119,6 +119,7 @@ static void initialize_dram_values(void)
writel(dram_vals[i], MXS_DRAM_BASE + (4 * i));
#ifdef CONFIG_MX23
+ /* Enable tRAS lockout in HW_DRAM_CTL08 ; it must be after all */
writel((1 << 24), MXS_DRAM_BASE + (4 * 8));
#endif
}
--
1.8.1
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