ARM: BeagleBoard-X15: Enable VTT regulator

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>

diff --git a/board/ti/beagle_x15/board.c b/board/ti/beagle_x15/board.c
index b6c17ec83f76f91cac73ae04fcf66c0efa2a92ae..c7f19c79242858b3fbddf2d44dcfb559c34ae562 100644 (file)
--- 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 8d072c6ed0dec1f70c15b7d96ca4bdbd0e2c5d7b..c5dde99f5ff2f31653ae7e13c1a43d8b061e7ab1 100644 (file)
--- 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)