openwrt/target/linux/ramips/patches-4.4/0069-awake-rt305x-dwc2-cont...

16 lines
563 B
Diff

--- a/drivers/usb/dwc2/platform.c
+++ b/drivers/usb/dwc2/platform.c
@@ -375,6 +375,12 @@ static int dwc2_driver_probe(struct plat
dev_dbg(&dev->dev, "mapped PA %08lx to VA %p\n",
(unsigned long)res->start, hsotg->regs);
+ /* Enable USB port before any regs access */
+ if (dwc2_readl(hsotg->regs + PCGCTL) & 0x0f) {
+ dwc2_writel(0x00, hsotg->regs + PCGCTL);
+ /* TODO: mdelay(25) here? vendor driver don't use it */
+ }
+
hsotg->dr_mode = usb_get_dr_mode(&dev->dev);
if (IS_ENABLED(CONFIG_USB_DWC2_HOST) &&
hsotg->dr_mode != USB_DR_MODE_HOST) {