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[ARM] pxa/em-x270: fix usb hub power up/reset sequence

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Igor Grinberg 15 年之前
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1b82e4c32f
共有 1 個文件被更改,包括 5 次插入6 次删除
  1. 5 6
      arch/arm/mach-pxa/em-x270.c

+ 5 - 6
arch/arm/mach-pxa/em-x270.c

@@ -497,16 +497,15 @@ static int em_x270_usb_hub_init(void)
 		goto err_free_vbus_gpio;
 		goto err_free_vbus_gpio;
 
 
 	/* USB Hub power-on and reset */
 	/* USB Hub power-on and reset */
-	gpio_direction_output(usb_hub_reset, 0);
+	gpio_direction_output(usb_hub_reset, 1);
+	gpio_direction_output(GPIO9_USB_VBUS_EN, 0);
 	regulator_enable(em_x270_usb_ldo);
 	regulator_enable(em_x270_usb_ldo);
-	gpio_set_value(usb_hub_reset, 1);
 	gpio_set_value(usb_hub_reset, 0);
 	gpio_set_value(usb_hub_reset, 0);
+	gpio_set_value(usb_hub_reset, 1);
 	regulator_disable(em_x270_usb_ldo);
 	regulator_disable(em_x270_usb_ldo);
 	regulator_enable(em_x270_usb_ldo);
 	regulator_enable(em_x270_usb_ldo);
-	gpio_set_value(usb_hub_reset, 1);
-
-	/* enable VBUS */
-	gpio_direction_output(GPIO9_USB_VBUS_EN, 1);
+	gpio_set_value(usb_hub_reset, 0);
+	gpio_set_value(GPIO9_USB_VBUS_EN, 1);
 
 
 	return 0;
 	return 0;