OpenWrt – Rev 4

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Rev:
--- a/drivers/usb/dwc2/platform.c
+++ b/drivers/usb/dwc2/platform.c
@@ -42,6 +42,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/of_device.h>
 #include <linux/mutex.h>
+#include <linux/of_gpio.h>
 #include <linux/platform_device.h>
 #include <linux/phy/phy.h>
 #include <linux/platform_data/s3c-hsotg.h>
@@ -544,6 +545,7 @@ static int dwc2_driver_probe(struct plat
        struct dwc2_hsotg *hsotg;
        struct resource *res;
        int retval;
+       int gpio_count; 
 
        match = of_match_device(dwc2_of_match_table, &dev->dev);
        if (match && match->data) {
@@ -562,6 +564,16 @@ static int dwc2_driver_probe(struct plat
                defparams.dma_desc_fs_enable = 0;
        }
 
+       gpio_count = of_gpio_count(dev->dev.of_node);
+       while (gpio_count > 0) {
+               enum of_gpio_flags flags;
+               int gpio = of_get_gpio_flags(dev->dev.of_node, --gpio_count, &flags);
+               if (gpio_request(gpio, "usb"))
+                       continue;
+               dev_info(&dev->dev, "requested GPIO %d\n", gpio);
+               gpio_direction_output(gpio, (flags & OF_GPIO_ACTIVE_LOW) ? (0) : (1));
+       }
+
        hsotg = devm_kzalloc(&dev->dev, sizeof(*hsotg), GFP_KERNEL);
        if (!hsotg)
                return -ENOMEM;