diff --git a/src/mainboard/google/veyron_fievel/devicetree.cb b/src/mainboard/google/veyron_fievel/devicetree.cb
index 97b63d177e..49d9f12626 100644
--- a/src/mainboard/google/veyron_fievel/devicetree.cb
+++ b/src/mainboard/google/veyron_fievel/devicetree.cb
@@ -21,6 +21,6 @@
 chip soc/rockchip/rk3288
 	device cpu_cluster 0 on end
 	register "vop_id" = "1"
-	register "vop_mode" = "VOP_MODE_EDP"
+	register "vop_mode" = "VOP_MODE_HDMI"
 	register "framebuffer_bits_per_pixel" = "16"
 end
diff --git a/src/mainboard/google/veyron_fievel/mainboard.c b/src/mainboard/google/veyron_fievel/mainboard.c
index 47f9eb607d..51b9552eba 100644
--- a/src/mainboard/google/veyron_fievel/mainboard.c
+++ b/src/mainboard/google/veyron_fievel/mainboard.c
@@ -41,6 +41,12 @@
 
 #include "board.h"
 
+static void enable_5v_drv(void)
+{
+	/* EN pin of NB679 for USB, Speaker, HDMI, TouchScreen*/
+	gpio_output(GPIO(7, C, 5), 1);
+}
+
 static void configure_usb(void)
 {
 	gpio_output(GPIO(0, B, 4), 1);			/* USB_OTG_PWR_EN */
@@ -92,14 +98,25 @@ static void configure_vop(void)
 	writel(IOMUX_EDP_HOTPLUG, &rk3288_grf->iomux_edp_hotplug);
 }
 
+static void configure_hdmi(void)
+{
+	/* HDMI I2C */
+	writel(IOMUX_HDMI_EDP_I2C_SDA, &rk3288_grf->iomux_i2c5sda);
+	writel(IOMUX_HDMI_EDP_I2C_SCL, &rk3288_grf->iomux_i2c5scl);
+
+	gpio_output(GPIO(5, C, 3), 1);	/* VCC50_HDMI_EN */
+}
+
 static void mainboard_init(device_t dev)
 {
 	gpio_output(GPIO_RESET, 0);
 
+	enable_5v_drv();
 	configure_usb();
 	configure_emmc();
 	configure_codec();
 	configure_vop();
+	configure_hdmi();
 
 	elog_init();
 	elog_add_watchdog_reset();
diff --git a/src/mainboard/google/veyron_tiger/devicetree.cb b/src/mainboard/google/veyron_tiger/devicetree.cb
index 97b63d177e..1c70b57bf4 100644
--- a/src/mainboard/google/veyron_tiger/devicetree.cb
+++ b/src/mainboard/google/veyron_tiger/devicetree.cb
@@ -21,6 +21,6 @@
 chip soc/rockchip/rk3288
 	device cpu_cluster 0 on end
 	register "vop_id" = "1"
-	register "vop_mode" = "VOP_MODE_EDP"
+	register "vop_mode" = "VOP_MODE_AUTO_DETECT"
 	register "framebuffer_bits_per_pixel" = "16"
 end
diff --git a/src/mainboard/google/veyron_tiger/mainboard.c b/src/mainboard/google/veyron_tiger/mainboard.c
index 47f9eb607d..51b9552eba 100644
--- a/src/mainboard/google/veyron_tiger/mainboard.c
+++ b/src/mainboard/google/veyron_tiger/mainboard.c
@@ -41,6 +41,12 @@
 
 #include "board.h"
 
+static void enable_5v_drv(void)
+{
+	/* EN pin of NB679 for USB, Speaker, HDMI, TouchScreen*/
+	gpio_output(GPIO(7, C, 5), 1);
+}
+
 static void configure_usb(void)
 {
 	gpio_output(GPIO(0, B, 4), 1);			/* USB_OTG_PWR_EN */
@@ -92,14 +98,25 @@ static void configure_vop(void)
 	writel(IOMUX_EDP_HOTPLUG, &rk3288_grf->iomux_edp_hotplug);
 }
 
+static void configure_hdmi(void)
+{
+	/* HDMI I2C */
+	writel(IOMUX_HDMI_EDP_I2C_SDA, &rk3288_grf->iomux_i2c5sda);
+	writel(IOMUX_HDMI_EDP_I2C_SCL, &rk3288_grf->iomux_i2c5scl);
+
+	gpio_output(GPIO(5, C, 3), 1);	/* VCC50_HDMI_EN */
+}
+
 static void mainboard_init(device_t dev)
 {
 	gpio_output(GPIO_RESET, 0);
 
+	enable_5v_drv();
 	configure_usb();
 	configure_emmc();
 	configure_codec();
 	configure_vop();
+	configure_hdmi();
 
 	elog_init();
 	elog_add_watchdog_reset();