a6c7c0029e
Because of Ralink uboot set USB controller into sleep mode [1] we check it and awake controller before any registers access. Fix ticket #21396 [2] [1] http://marc.info/?l=linux-usb&m=137398626102108&w=2 [2] https://dev.openwrt.org/ticket/21396 Signed-Off-By: Serge Vasilugin <vasilugin@yandex.ru> SVN-Revision: 49212
15 lines
552 B
Diff
15 lines
552 B
Diff
--- a/drivers/usb/dwc2/platform.c
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+++ b/drivers/usb/dwc2/platform.c
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@@ -375,6 +375,12 @@ static int dwc2_driver_probe(struct plat
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dev_dbg(&dev->dev, "mapped PA %08lx to VA %p\n",
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(unsigned long)res->start, hsotg->regs);
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+ /* Enable USB port before any regs access */
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+ if(dwc2_readl(hsotg->regs + PCGCTL) & 0x0f) {
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+ dwc2_writel(0x00, hsotg->regs + PCGCTL);
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+ /* TODO: mdelay(25) here? vendor driver don't use it */
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+ }
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+
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hsotg->dr_mode = usb_get_dr_mode(&dev->dev);
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if (IS_ENABLED(CONFIG_USB_DWC2_HOST) &&
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hsotg->dr_mode != USB_DR_MODE_HOST) {
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