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path: root/target/linux/lantiq/patches-4.1/0040-USB-DWC2-enable-usb-power-gpio.patch
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Diffstat (limited to 'target/linux/lantiq/patches-4.1/0040-USB-DWC2-enable-usb-power-gpio.patch')
-rw-r--r--target/linux/lantiq/patches-4.1/0040-USB-DWC2-enable-usb-power-gpio.patch35
1 files changed, 35 insertions, 0 deletions
diff --git a/target/linux/lantiq/patches-4.1/0040-USB-DWC2-enable-usb-power-gpio.patch b/target/linux/lantiq/patches-4.1/0040-USB-DWC2-enable-usb-power-gpio.patch
new file mode 100644
index 0000000..9c6f11c
--- /dev/null
+++ b/target/linux/lantiq/patches-4.1/0040-USB-DWC2-enable-usb-power-gpio.patch
@@ -0,0 +1,35 @@
+--- a/drivers/usb/dwc2/platform.c
++++ b/drivers/usb/dwc2/platform.c
+@@ -41,6 +41,7 @@
+ #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/usb/of.h>
+@@ -161,6 +162,7 @@ static int dwc2_driver_probe(struct plat
+ struct usb_phy *uphy;
+ int retval;
+ int irq;
++ int gpio_count;
+
+ match = of_match_device(dwc2_of_match_table, &dev->dev);
+ if (match && match->data) {
+@@ -177,6 +179,16 @@ static int dwc2_driver_probe(struct plat
+ defparams.dma_desc_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;