From 39a538d9920f9422edbe339f00abe2eb7e038741 Mon Sep 17 00:00:00 2001
From: Fabio Estevam <fabio.estevam@freescale.com>
Date: Fri, 3 May 2013 04:37:12 +0000
Subject: [PATCH] mxs: spl_mem_init: Skip the initialization of some DRAM_CTL
registers
HW_DRAM_CTL27, HW_DRAM_CTL28 and HW_DRAM_CTL35 are not initialized as per
FSL bootlets code.
mx23 Reference Manual mark HW_DRAM_CTL27 and HW_DRAM_CTL28 as "reserved".
HW_DRAM_CTL8 is setup as the last element.
So skip the initialization of these DRAM_CTL registers.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
---
arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c | 17 +++++++++++++++--
1 file changed, 15 insertions(+), 2 deletions(-)
diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c b/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
index df255352d0..5eacd36867 100644
--- a/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
+++ b/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
@@ -110,6 +110,7 @@ __weak void mxs_adjust_memory_params(uint32_t *dram_vals)
{
}
+#ifdef CONFIG_MX28
static void initialize_dram_values(void)
{
int i;
@@ -118,15 +119,27 @@ static void initialize_dram_values(void)
for (i = 0; i < ARRAY_SIZE(dram_vals); i++)
writel(dram_vals[i], MXS_DRAM_BASE + (4 * i));
+}
+#else
+static void initialize_dram_values(void)
+{
+ int i;
+
+ mxs_adjust_memory_params(dram_vals);
+
+ for (i = 0; i < ARRAY_SIZE(dram_vals); i++) {
+ if (i == 8 || i == 27 || i == 28 || i == 35)
+ continue;
+ writel(dram_vals[i], MXS_DRAM_BASE + (4 * i));
+ }
-#ifdef CONFIG_MX23
/*
* Enable tRAS lockout in HW_DRAM_CTL08 ; it must be the last
* element to be set
*/
writel((1 << 24), MXS_DRAM_BASE + (4 * 8));
-#endif
}
+#endif
static void mxs_mem_init_clock(void)
{
--
2.39.5