BeagleBoard-X15 uses a vtt regulator for DDR3 termination and this is controlled by gpio7_11. Configuring gpio7_11.
Signed-off-by: Lokesh Vutla lokeshvutla@ti.com --- board/ti/beagle_x15/board.c | 23 +++++++++++++++++++++++ include/configs/beagle_x15.h | 2 ++ 2 files changed, 25 insertions(+)
diff --git a/board/ti/beagle_x15/board.c b/board/ti/beagle_x15/board.c index b6c17ec..c7f19c7 100644 --- a/board/ti/beagle_x15/board.c +++ b/board/ti/beagle_x15/board.c @@ -14,6 +14,8 @@ #include <usb.h> #include <asm/omap_common.h> #include <asm/emif.h> +#include <asm/gpio.h> +#include <asm/arch/gpio.h> #include <asm/arch/clock.h> #include <asm/arch/dra7xx_iodelay.h> #include <asm/arch/sys_proto.h> @@ -30,6 +32,9 @@
DECLARE_GLOBAL_DATA_PTR;
+/* GPIO 7_11 */ +#define GPIO_DDR_VTT_EN 203 + const struct omap_sysinfo sysinfo = { "Board: BeagleBoard x15\n" }; @@ -404,3 +409,21 @@ int board_eth_init(bd_t *bis) return ret; } #endif + +#ifdef CONFIG_BOARD_EARLY_INIT_F +/* VTT regulator enable */ +static inline void vtt_regulator_enable(void) +{ + if (omap_hw_init_context() == OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL) + return; + + gpio_request(GPIO_DDR_VTT_EN, "ddr_vtt_en"); + gpio_direction_output(GPIO_DDR_VTT_EN, 1); +} + +int board_early_init_f(void) +{ + vtt_regulator_enable(); + return 0; +} +#endif diff --git a/include/configs/beagle_x15.h b/include/configs/beagle_x15.h index 8d072c6..c5dde99 100644 --- a/include/configs/beagle_x15.h +++ b/include/configs/beagle_x15.h @@ -18,6 +18,8 @@ #define CONFIG_IODELAY_RECALIBRATION #endif
+#define CONFIG_BOARD_EARLY_INIT_F + #define CONFIG_NR_DRAM_BANKS 2
#define CONFIG_ENV_SIZE (64 << 10)