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ARM: BeagleBoard-X15: Enable VTT regulator

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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>
Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Lokesh Vutla 2015-06-16 20:36:05 +05:30 committed by Tom Rini
parent f4787eab13
commit 334bbb387f
2 changed files with 25 additions and 0 deletions
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23
board/ti/beagle_x15/board.c
View file

@ -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

2
include/configs/beagle_x15.h
View file

@ -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)