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/gpio.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'arch/arm/include/asm/arch-am33xx/gpio.h') diff --git a/arch/arm/include/asm/arch-am33xx/gpio.h b/arch/arm/include/asm/arch-am33xx/gpio.h index 13a047fd72..a1ffd49f79 100644 --- a/arch/arm/include/asm/arch-am33xx/gpio.h +++ b/arch/arm/include/asm/arch-am33xx/gpio.h @@ -13,4 +13,16 @@ #define AM33XX_GPIO2_BASE 0x481AC000 #define AM33XX_GPIO3_BASE 0x481AE000 +#define GPIO_22 22 + +/* GPIO CTRL register */ +#define GPIO_CTRL_DISABLEMODULE_SHIFT 0 +#define GPIO_CTRL_DISABLEMODULE_MASK (1 << 0) +#define GPIO_CTRL_ENABLEMODULE GPIO_CTRL_DISABLEMODULE_MASK + +/* GPIO OUTPUT ENABLE register */ +#define GPIO_OE_ENABLE(x) (1 << x) + +/* GPIO SETDATAOUT register */ +#define GPIO_SETDATAOUT(x) (1 << x) #endif /* _GPIO_AM33xx_H */ -- cgit