x86: minnowmax: Configure GPIO pins to turn on USB ports VBUS

GPIO bank E pin 8 & 9 are used to control the on-board two USB ports
VBUS on/off. Let's configure them in the misc_init_r().

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>

board/intel/minnowmax/minnowmax.c

@@ -5,9 +5,62 @@
  */
 
 #include <common.h>
+#include <dm.h>
 #include <asm/gpio.h>
+#include <dm/device-internal.h>
+#include <dm/uclass-internal.h>
+
+#define GPIO_BANKE_NAME		"gpioe"
 
 int arch_early_init_r(void)
 {
 	return 0;
 }
+
+int misc_init_r(void)
+{
+	struct udevice *dev;
+	struct gpio_desc desc;
+	int ret;
+
+	/*
+	 * Turn on USB VBUS for the two USB ports on the board.
+	 * Each port's VBUS is controlled by a GPIO pin.
+	 */
+
+	ret = uclass_find_device_by_name(UCLASS_GPIO, GPIO_BANKE_NAME, &dev);
+	if (ret) {
+		debug("%s: GPIO %s device cannot be not found (ret=%d)\n",
+		      __func__, GPIO_BANKE_NAME, ret);
+		return ret;
+	}
+
+	ret = device_probe(dev);
+	if (ret) {
+		debug("%s: GPIO %s device probe failed (ret=%d)\n",
+		      __func__, GPIO_BANKE_NAME, ret);
+		return ret;
+	}
+
+	desc.dev = dev;
+	desc.flags = GPIOD_IS_OUT;
+
+	/* GPIO E8 controls the bottom port */
+	desc.offset = 8;
+
+	ret = dm_gpio_request(&desc, "usb_host_en0");
+	if (ret)
+		return ret;
+	dm_gpio_set_value(&desc, 1);
+
+	/* GPIO E9 controls the upper port */
+	desc.offset = 9;
+
+	ret = dm_gpio_request(&desc, "usb_host_en1");
+	if (ret)
+		return ret;
+
+	dm_gpio_set_value(&desc, 1);
+
+	return 0;
+}

include/configs/minnowmax.h

@@ -16,6 +16,7 @@
 #define CONFIG_SYS_MONITOR_LEN		(1 << 20)
 
 #define CONFIG_SMSC_LPC47M
+#define CONFIG_MISC_INIT_R
 
 #define CONFIG_STD_DEVICES_SETTINGS	"stdin=usbkbd,serial\0" \
 					"stdout=vidconsole,serial\0" \