[U-Boot] [PATCH 4/4] ARM: DRA7: emif: Enable interleaving for higher address space

[Lokesh Vutla]

Given that DRA7/OMAP5 SoCs can support more than 2GB of memory,
enable interleaving for this higher memory to increase performance.

Signed-off-by: Lokesh Vutla <lokeshvutla at ti.com>
---
 arch/arm/cpu/armv7/omap-common/emif-common.c | 2 ++
 arch/arm/include/asm/emif.h                  | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/arch/arm/cpu/armv7/omap-common/emif-common.c b/arch/arm/cpu/armv7/omap-common/emif-common.c
index 3673884..697d6e0 100644
--- a/arch/arm/cpu/armv7/omap-common/emif-common.c
+++ b/arch/arm/cpu/armv7/omap-common/emif-common.c
@@ -1329,6 +1329,8 @@ void dmm_init(u32 base)
 			&hw_lisa_map_regs->dmm_lisa_map_1);
 		writel(lisa_map_regs->dmm_lisa_map_0,
 			&hw_lisa_map_regs->dmm_lisa_map_0);
+
+		setbits_le32(MA_PRIORITY, MA_HIMEM_INTERLEAVE_UN_MASK);
 	}
 
 	/*
diff --git a/arch/arm/include/asm/emif.h b/arch/arm/include/asm/emif.h
index b03cf5a..3183130 100644
--- a/arch/arm/include/asm/emif.h
+++ b/arch/arm/include/asm/emif.h
@@ -545,6 +545,9 @@
 
 /* Memory Adapter */
 #define MA_BASE				0x482AF040
+#define MA_PRIORITY			0x482A2000
+#define MA_HIMEM_INTERLEAVE_UN_SHIFT	8
+#define MA_HIMEM_INTERLEAVE_UN_MASK	(1 << 8)
 
 /* DMM_LISA_MAP */
 #define EMIF_SYS_ADDR_SHIFT		24
-- 
2.1.4