36 lines
1 KiB
Diff
36 lines
1 KiB
Diff
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--- a/drivers/usb/dwc2/platform.c
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+++ b/drivers/usb/dwc2/platform.c
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@@ -41,6 +41,7 @@
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#include <linux/dma-mapping.h>
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#include <linux/of_device.h>
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#include <linux/mutex.h>
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+#include <linux/of_gpio.h>
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#include <linux/platform_device.h>
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#include <linux/usb/of.h>
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@@ -161,6 +162,7 @@ static int dwc2_driver_probe(struct plat
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struct usb_phy *uphy;
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int retval;
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int irq;
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+ int gpio_count;
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match = of_match_device(dwc2_of_match_table, &dev->dev);
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if (match && match->data) {
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@@ -177,6 +179,16 @@ static int dwc2_driver_probe(struct plat
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defparams.dma_desc_enable = 0;
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}
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+ gpio_count = of_gpio_count(dev->dev.of_node);
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+ while (gpio_count > 0) {
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+ enum of_gpio_flags flags;
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+ int gpio = of_get_gpio_flags(dev->dev.of_node, --gpio_count, &flags);
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+ if (gpio_request(gpio, "usb"))
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+ continue;
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+ dev_info(&dev->dev, "requested GPIO %d\n", gpio);
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+ gpio_direction_output(gpio, (flags & OF_GPIO_ACTIVE_LOW) ? (0) : (1));
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+ }
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+
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hsotg = devm_kzalloc(&dev->dev, sizeof(*hsotg), GFP_KERNEL);
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if (!hsotg)
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return -ENOMEM;
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