From b5e01eecc89e3e5c2ed3c17b803529be3c3702fb Mon Sep 17 00:00:00 2001 From: Lokesh Vutla Date: Tue, 10 Dec 2013 15:02:23 +0530 Subject: ARM: AM43xx: GP_EVM: Add support for DDR3 GP EVM has 1GB DDR3 attached(Part no: MT41K512M8RH). Adding details for the same. Below is the brief description of DDR3 init sequence(SW leveling): -> Enable VTT regulator -> Configure VTP -> Configure DDR IO settings -> Disable initialization and refreshes until EMIF registers are programmed. -> Program Timing registers -> Program leveling registers -> Program PHY control and Temp alert and ZQ config registers. -> Enable initialization and refreshes and configure SDRAM CONFIG register Signed-off-by: Lokesh Vutla --- arch/arm/include/asm/arch-am33xx/ddr_defs.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'arch/arm/include/asm/arch-am33xx/ddr_defs.h') diff --git a/arch/arm/include/asm/arch-am33xx/ddr_defs.h b/arch/arm/include/asm/arch-am33xx/ddr_defs.h index 6af4b84..c1777df 100644 --- a/arch/arm/include/asm/arch-am33xx/ddr_defs.h +++ b/arch/arm/include/asm/arch-am33xx/ddr_defs.h @@ -136,6 +136,14 @@ #define LPDDR2_DATA2_IOCTRL_VALUE 0x20000294 #define LPDDR2_DATA3_IOCTRL_VALUE 0x20000294 +#define DDR3_ADDRCTRL_WD0_IOCTRL_VALUE 0x00000000 +#define DDR3_ADDRCTRL_WD1_IOCTRL_VALUE 0x00000000 +#define DDR3_ADDRCTRL_IOCTRL_VALUE 0x84 +#define DDR3_DATA0_IOCTRL_VALUE 0x84 +#define DDR3_DATA1_IOCTRL_VALUE 0x84 +#define DDR3_DATA2_IOCTRL_VALUE 0x84 +#define DDR3_DATA3_IOCTRL_VALUE 0x84 + /** * Configure DMM */ -- cgit v1.1