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 --- board/ti/am43xx/mux.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'board/ti/am43xx/mux.c') diff --git a/board/ti/am43xx/mux.c b/board/ti/am43xx/mux.c index a2d72dde5f..810b1941db 100644 --- a/board/ti/am43xx/mux.c +++ b/board/ti/am43xx/mux.c @@ -33,6 +33,11 @@ static struct module_pin_mux i2c0_pin_mux[] = { {-1}, }; +static struct module_pin_mux gpio0_22_pin_mux[] = { + {OFFSET(ddr_ba2), (MODE(9) | PULLUP_EN)}, /* GPIO0_22 */ + {-1}, +}; + void enable_uart0_pin_mux(void) { configure_module_pin_mux(uart0_pin_mux); @@ -42,6 +47,9 @@ void enable_board_pin_mux(void) { configure_module_pin_mux(mmc0_pin_mux); configure_module_pin_mux(i2c0_pin_mux); + + if (board_is_gpevm()) + configure_module_pin_mux(gpio0_22_pin_mux); } void enable_i2c0_pin_mux(void) -- cgit