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@@ -14,6 +14,8 @@
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#include <usb.h>
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#include <asm/omap_common.h>
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#include <asm/emif.h>
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+#include <asm/gpio.h>
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+#include <asm/arch/gpio.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/dra7xx_iodelay.h>
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#include <asm/arch/sys_proto.h>
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@@ -30,6 +32,9 @@
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DECLARE_GLOBAL_DATA_PTR;
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+/* GPIO 7_11 */
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+#define GPIO_DDR_VTT_EN 203
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+
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const struct omap_sysinfo sysinfo = {
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"Board: BeagleBoard x15\n"
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};
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@@ -404,3 +409,21 @@ int board_eth_init(bd_t *bis)
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return ret;
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}
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#endif
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+
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+#ifdef CONFIG_BOARD_EARLY_INIT_F
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+/* VTT regulator enable */
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+static inline void vtt_regulator_enable(void)
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+{
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+ if (omap_hw_init_context() == OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL)
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+ return;
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+
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+ gpio_request(GPIO_DDR_VTT_EN, "ddr_vtt_en");
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+ gpio_direction_output(GPIO_DDR_VTT_EN, 1);
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+}
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+
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+int board_early_init_f(void)
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+{
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+ vtt_regulator_enable();
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+ return 0;
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+}
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+#endif
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