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-rw-r--r--arch/arm/cpu/armv7/omap-common/emif-common.c21
-rw-r--r--arch/arm/cpu/armv7/omap-common/hwinit-common.c4
-rw-r--r--arch/arm/include/asm/arch-omap4/sys_proto.h1
-rw-r--r--arch/arm/include/asm/arch-omap5/sys_proto.h1
4 files changed, 27 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/omap-common/emif-common.c b/arch/arm/cpu/armv7/omap-common/emif-common.c
index edc63fa..64427e6 100644
--- a/arch/arm/cpu/armv7/omap-common/emif-common.c
+++ b/arch/arm/cpu/armv7/omap-common/emif-common.c
@@ -32,6 +32,27 @@
#include <asm/omap_common.h>
#include <asm/utils.h>
+void set_lpmode_selfrefresh(u32 base)
+{
+ struct emif_reg_struct *emif = (struct emif_reg_struct *)base;
+ u32 reg;
+
+ reg = readl(&emif->emif_pwr_mgmt_ctrl);
+ reg &= ~EMIF_REG_LP_MODE_MASK;
+ reg |= LP_MODE_SELF_REFRESH << EMIF_REG_LP_MODE_SHIFT;
+ reg &= ~EMIF_REG_SR_TIM_MASK;
+ writel(reg, &emif->emif_pwr_mgmt_ctrl);
+
+ /* dummy read for the new SR_TIM to be loaded */
+ readl(&emif->emif_pwr_mgmt_ctrl);
+}
+
+void force_emif_self_refresh()
+{
+ set_lpmode_selfrefresh(EMIF1_BASE);
+ set_lpmode_selfrefresh(EMIF2_BASE);
+}
+
inline u32 emif_num(u32 base)
{
if (base == EMIF1_BASE)
diff --git a/arch/arm/cpu/armv7/omap-common/hwinit-common.c b/arch/arm/cpu/armv7/omap-common/hwinit-common.c
index 6600323..459ebb5 100644
--- a/arch/arm/cpu/armv7/omap-common/hwinit-common.c
+++ b/arch/arm/cpu/armv7/omap-common/hwinit-common.c
@@ -111,6 +111,10 @@ static void init_boot_params(void)
void s_init(void)
{
init_omap_revision();
+#ifdef CONFIG_SPL_BUILD
+ if (warm_reset() && (omap_revision() <= OMAP5430_ES1_0))
+ force_emif_self_refresh();
+#endif
watchdog_init();
set_mux_conf_regs();
#ifdef CONFIG_SPL_BUILD
diff --git a/arch/arm/include/asm/arch-omap4/sys_proto.h b/arch/arm/include/asm/arch-omap4/sys_proto.h
index 4f0a29d..d633573 100644
--- a/arch/arm/include/asm/arch-omap4/sys_proto.h
+++ b/arch/arm/include/asm/arch-omap4/sys_proto.h
@@ -58,6 +58,7 @@ void do_io_settings(void);
void omap_vc_init(u16 speed_khz);
int omap_vc_bypass_send_value(u8 sa, u8 reg_addr, u8 reg_data);
u32 warm_reset(void);
+void force_emif_self_refresh(void);
/*
* This is used to verify if the configuration header
* was executed by Romcode prior to control of transfer
diff --git a/arch/arm/include/asm/arch-omap5/sys_proto.h b/arch/arm/include/asm/arch-omap5/sys_proto.h
index b3bbdb7..74feb90 100644
--- a/arch/arm/include/asm/arch-omap5/sys_proto.h
+++ b/arch/arm/include/asm/arch-omap5/sys_proto.h
@@ -58,6 +58,7 @@ void do_io_settings(void);
void omap_vc_init(u16 speed_khz);
int omap_vc_bypass_send_value(u8 sa, u8 reg_addr, u8 reg_data);
u32 warm_reset(void);
+void force_emif_self_refresh(void);
/*
* This is used to verify if the configuration header